/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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 01:59:59,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 01:59:59,826 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 01:59:59,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 01:59:59,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 01:59:59,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 01:59:59,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 01:59:59,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 01:59:59,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 01:59:59,861 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 01:59:59,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 01:59:59,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 01:59:59,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 01:59:59,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 01:59:59,862 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 01:59:59,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 01:59:59,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 01:59:59,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 01:59:59,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 01:59:59,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 01:59:59,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 01:59:59,865 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 01:59:59,865 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 01:59:59,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 01:59:59,865 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 01:59:59,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 01:59:59,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 01:59:59,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 01:59:59,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 01:59:59,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:59:59,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 01:59:59,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 01:59:59,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 01:59:59,868 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 01:59:59,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:00:00,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:00:00,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:00:00,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:00:00,075 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:00:00,075 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:00:00,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-12-22 02:00:01,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:00:01,599 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:00:01,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-12-22 02:00:01,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448445149/ef2be3f1f76c42888a9a36cb2c33617a/FLAG27dd166b1 [2023-12-22 02:00:01,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448445149/ef2be3f1f76c42888a9a36cb2c33617a [2023-12-22 02:00:01,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:00:01,646 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:00:01,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:00:01,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:00:01,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:00:01,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:00:01" (1/1) ... [2023-12-22 02:00:01,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d9c93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:01, skipping insertion in model container [2023-12-22 02:00:01,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:00:01" (1/1) ... [2023-12-22 02:00:01,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:00:02,090 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[20426,20439] [2023-12-22 02:00:02,142 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[23933,23946] [2023-12-22 02:00:02,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:00:02,676 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:00:02,715 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[20426,20439] [2023-12-22 02:00:02,724 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[23933,23946] [2023-12-22 02:00:03,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:00:03,148 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:00:03,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03 WrapperNode [2023-12-22 02:00:03,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:00:03,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:00:03,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:00:03,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:00:03,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,320 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5183 [2023-12-22 02:00:03,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:00:03,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:00:03,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:00:03,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:00:03,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,411 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 02:00:03,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:00:03,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:00:03,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:00:03,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:00:03,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (1/1) ... [2023-12-22 02:00:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:00:03,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:00:03,593 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 02:00:03,610 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 02:00:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:00:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:00:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:00:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:00:03,753 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:00:03,755 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:00:28,320 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:00:28,366 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:00:28,366 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 02:00:28,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:00:28 BoogieIcfgContainer [2023-12-22 02:00:28,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:00:28,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:00:28,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:00:28,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:00:28,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:00:01" (1/3) ... [2023-12-22 02:00:28,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd2399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:00:28, skipping insertion in model container [2023-12-22 02:00:28,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:00:03" (2/3) ... [2023-12-22 02:00:28,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd2399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:00:28, skipping insertion in model container [2023-12-22 02:00:28,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:00:28" (3/3) ... [2023-12-22 02:00:28,372 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-12-22 02:00:28,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:00:28,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:00:28,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:00:28,440 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;@ce45d3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:00:28,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:00:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 02:00:28,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:00:28,456 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] [2023-12-22 02:00:28,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:00:28,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:00:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2135335152, now seen corresponding path program 1 times [2023-12-22 02:00:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:00:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750214556] [2023-12-22 02:00:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:00:28,472 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 02:00:28,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:00:28,474 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 02:00:28,520 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 02:00:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:00:28,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 02:00:28,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:00:28,647 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 02:00:28,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:00:28,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:00:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750214556] [2023-12-22 02:00:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750214556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:00:28,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:00:28,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:00:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62529872] [2023-12-22 02:00:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:00:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 02:00:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:00:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 02:00:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:00:28,681 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:00:28,799 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-22 02:00:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 02:00:28,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-22 02:00:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:00:28,833 INFO L225 Difference]: With dead ends: 1676 [2023-12-22 02:00:28,833 INFO L226 Difference]: Without dead ends: 861 [2023-12-22 02:00:28,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:00:28,845 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:00:28,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:00:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-22 02:00:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-22 02:00:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-22 02:00:28,901 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-22 02:00:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:00:28,901 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-22 02:00:28,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-22 02:00:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 02:00:28,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:00:28,902 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] [2023-12-22 02:00:28,915 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 (2)] Forceful destruction successful, exit code 0 [2023-12-22 02:00:29,110 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 02:00:29,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:00:29,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:00:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1712633326, now seen corresponding path program 1 times [2023-12-22 02:00:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:00:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254150158] [2023-12-22 02:00:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:00:29,112 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 02:00:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:00:29,114 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 02:00:29,119 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 02:00:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:00:29,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:00:29,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:00:29,240 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 02:00:29,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:00:29,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:00:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254150158] [2023-12-22 02:00:29,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254150158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:00:29,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:00:29,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:00:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791068184] [2023-12-22 02:00:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:00:29,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:00:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:00:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:00:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:00:29,247 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:29,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:00:29,349 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-22 02:00:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:00:29,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-22 02:00:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:00:29,353 INFO L225 Difference]: With dead ends: 917 [2023-12-22 02:00:29,353 INFO L226 Difference]: Without dead ends: 861 [2023-12-22 02:00:29,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:00:29,355 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:00:29,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:00:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-22 02:00:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-22 02:00:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-22 02:00:29,374 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-22 02:00:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:00:29,374 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-22 02:00:29,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:00:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-22 02:00:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-22 02:00:29,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:00:29,378 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] [2023-12-22 02:00:29,385 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 02:00:29,581 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 02:00:29,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:00:29,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:00:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1424651870, now seen corresponding path program 1 times [2023-12-22 02:00:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:00:29,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503090634] [2023-12-22 02:00:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:00:29,589 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 02:00:29,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:00:29,590 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 02:00:29,604 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 02:00:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:00:29,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:00:29,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:00:29,728 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 02:00:29,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:00:29,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:00:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503090634] [2023-12-22 02:00:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503090634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:00:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:00:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:00:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561168982] [2023-12-22 02:00:29,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:00:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:00:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:00:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:00:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:00:29,739 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:06,227 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-12-22 02:01:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-22 02:01:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:06,234 INFO L225 Difference]: With dead ends: 2365 [2023-12-22 02:01:06,234 INFO L226 Difference]: Without dead ends: 1612 [2023-12-22 02:01:06,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 02:01:06,236 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 929 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:06,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 565 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time] [2023-12-22 02:01:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-22 02:01:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-22 02:01:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.6186335403726708) internal successors, (2606), 1611 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2606 transitions. [2023-12-22 02:01:06,268 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2606 transitions. Word has length 29 [2023-12-22 02:01:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:06,268 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2606 transitions. [2023-12-22 02:01:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2606 transitions. [2023-12-22 02:01:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-22 02:01:06,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:06,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:06,291 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 (4)] Ended with exit code 0 [2023-12-22 02:01:06,472 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 02:01:06,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:06,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1559562279, now seen corresponding path program 1 times [2023-12-22 02:01:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208540138] [2023-12-22 02:01:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:06,477 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 02:01:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:06,479 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 02:01:06,483 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 02:01:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:06,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:01:06,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:07,792 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 02:01:07,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:07,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208540138] [2023-12-22 02:01:07,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208540138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:07,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:07,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 02:01:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131591746] [2023-12-22 02:01:07,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 02:01:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:07,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 02:01:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 02:01:07,794 INFO L87 Difference]: Start difference. First operand 1612 states and 2606 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:08,136 INFO L93 Difference]: Finished difference Result 2036 states and 3294 transitions. [2023-12-22 02:01:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 02:01:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-22 02:01:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:08,144 INFO L225 Difference]: With dead ends: 2036 [2023-12-22 02:01:08,144 INFO L226 Difference]: Without dead ends: 1983 [2023-12-22 02:01:08,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 02:01:08,145 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3587 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3587 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:08,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3587 Valid, 2581 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:01:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2023-12-22 02:01:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1714. [2023-12-22 02:01:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1712 states have (on average 1.6197429906542056) internal successors, (2773), 1713 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2773 transitions. [2023-12-22 02:01:08,171 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2773 transitions. Word has length 74 [2023-12-22 02:01:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:08,171 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2773 transitions. [2023-12-22 02:01:08,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2773 transitions. [2023-12-22 02:01:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 02:01:08,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:08,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:08,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:08,375 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 02:01:08,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:08,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -327839241, now seen corresponding path program 1 times [2023-12-22 02:01:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:08,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907574916] [2023-12-22 02:01:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:08,377 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 02:01:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:08,380 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 02:01:08,381 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 02:01:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:08,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:08,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:08,603 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 02:01:08,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:08,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907574916] [2023-12-22 02:01:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907574916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:08,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713706465] [2023-12-22 02:01:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:08,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:08,604 INFO L87 Difference]: Start difference. First operand 1714 states and 2773 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:08,657 INFO L93 Difference]: Finished difference Result 2008 states and 3251 transitions. [2023-12-22 02:01:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-22 02:01:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:08,664 INFO L225 Difference]: With dead ends: 2008 [2023-12-22 02:01:08,664 INFO L226 Difference]: Without dead ends: 1853 [2023-12-22 02:01:08,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 02:01:08,666 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:08,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1655 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-12-22 02:01:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1851. [2023-12-22 02:01:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1849 states have (on average 1.6181719848566793) internal successors, (2992), 1850 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2992 transitions. [2023-12-22 02:01:08,691 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2992 transitions. Word has length 76 [2023-12-22 02:01:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:08,693 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 2992 transitions. [2023-12-22 02:01:08,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2992 transitions. [2023-12-22 02:01:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-22 02:01:08,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:08,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:08,718 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 02:01:08,901 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 02:01:08,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:08,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1634971720, now seen corresponding path program 1 times [2023-12-22 02:01:08,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459128235] [2023-12-22 02:01:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:08,902 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 02:01:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:08,917 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 02:01:08,947 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 02:01:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:08,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:01:08,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:09,025 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 02:01:09,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:09,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459128235] [2023-12-22 02:01:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459128235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:09,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:01:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018012609] [2023-12-22 02:01:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:01:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:01:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:01:09,026 INFO L87 Difference]: Start difference. First operand 1851 states and 2992 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:09,106 INFO L93 Difference]: Finished difference Result 1865 states and 3009 transitions. [2023-12-22 02:01:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:01:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-22 02:01:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:09,113 INFO L225 Difference]: With dead ends: 1865 [2023-12-22 02:01:09,113 INFO L226 Difference]: Without dead ends: 1863 [2023-12-22 02:01:09,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:01:09,116 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:09,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:01:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-12-22 02:01:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1859. [2023-12-22 02:01:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1857 states have (on average 1.6149703823371029) internal successors, (2999), 1858 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2999 transitions. [2023-12-22 02:01:09,147 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2999 transitions. Word has length 77 [2023-12-22 02:01:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:09,148 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2999 transitions. [2023-12-22 02:01:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2999 transitions. [2023-12-22 02:01:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:09,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:09,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:09,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:09,359 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 02:01:09,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:09,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash -562302993, now seen corresponding path program 1 times [2023-12-22 02:01:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075380773] [2023-12-22 02:01:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:09,361 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 02:01:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:09,362 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 02:01:09,362 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 02:01:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:09,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:09,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:09,534 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 02:01:09,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:09,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075380773] [2023-12-22 02:01:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075380773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:09,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:09,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758188058] [2023-12-22 02:01:09,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:09,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:09,536 INFO L87 Difference]: Start difference. First operand 1859 states and 2999 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:09,566 INFO L93 Difference]: Finished difference Result 2171 states and 3499 transitions. [2023-12-22 02:01:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:09,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:09,572 INFO L225 Difference]: With dead ends: 2171 [2023-12-22 02:01:09,572 INFO L226 Difference]: Without dead ends: 2010 [2023-12-22 02:01:09,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:09,573 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:09,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2023-12-22 02:01:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2008. [2023-12-22 02:01:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2006 states have (on average 1.6126620139581256) internal successors, (3235), 2007 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3235 transitions. [2023-12-22 02:01:09,599 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3235 transitions. Word has length 78 [2023-12-22 02:01:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:09,600 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 3235 transitions. [2023-12-22 02:01:09,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3235 transitions. [2023-12-22 02:01:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:09,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:09,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:09,606 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 (8)] Ended with exit code 0 [2023-12-22 02:01:09,803 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 02:01:09,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:09,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 193081071, now seen corresponding path program 1 times [2023-12-22 02:01:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773440810] [2023-12-22 02:01:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:09,805 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 02:01:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:09,808 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 02:01:09,809 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 02:01:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:09,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:09,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:09,962 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 02:01:09,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:09,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773440810] [2023-12-22 02:01:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773440810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:09,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388461435] [2023-12-22 02:01:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:09,964 INFO L87 Difference]: Start difference. First operand 2008 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:09,997 INFO L93 Difference]: Finished difference Result 2866 states and 4598 transitions. [2023-12-22 02:01:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:10,005 INFO L225 Difference]: With dead ends: 2866 [2023-12-22 02:01:10,005 INFO L226 Difference]: Without dead ends: 2419 [2023-12-22 02:01:10,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:10,007 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:10,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2023-12-22 02:01:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2023-12-22 02:01:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.6045548654244306) internal successors, (3875), 2416 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3875 transitions. [2023-12-22 02:01:10,093 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3875 transitions. Word has length 78 [2023-12-22 02:01:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:10,093 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3875 transitions. [2023-12-22 02:01:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3875 transitions. [2023-12-22 02:01:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:10,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:10,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:10,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:10,301 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 02:01:10,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:10,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -217305617, now seen corresponding path program 1 times [2023-12-22 02:01:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408632119] [2023-12-22 02:01:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:10,303 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 02:01:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:10,313 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 02:01:10,345 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 02:01:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:10,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:10,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:10,485 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 02:01:10,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:10,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:10,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408632119] [2023-12-22 02:01:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408632119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110706245] [2023-12-22 02:01:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:10,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:10,489 INFO L87 Difference]: Start difference. First operand 2417 states and 3875 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:10,531 INFO L93 Difference]: Finished difference Result 4057 states and 6455 transitions. [2023-12-22 02:01:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:10,540 INFO L225 Difference]: With dead ends: 4057 [2023-12-22 02:01:10,540 INFO L226 Difference]: Without dead ends: 3201 [2023-12-22 02:01:10,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:10,544 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:10,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-12-22 02:01:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3199. [2023-12-22 02:01:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3197 states have (on average 1.589928057553957) internal successors, (5083), 3198 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5083 transitions. [2023-12-22 02:01:10,596 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5083 transitions. Word has length 78 [2023-12-22 02:01:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:10,596 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 5083 transitions. [2023-12-22 02:01:10,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5083 transitions. [2023-12-22 02:01:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:10,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:10,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:10,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:10,800 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 02:01:10,801 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:10,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash -485888785, now seen corresponding path program 1 times [2023-12-22 02:01:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344464903] [2023-12-22 02:01:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:10,801 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 02:01:10,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:10,802 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 02:01:10,834 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 02:01:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:10,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:10,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:10,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:10,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:10,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344464903] [2023-12-22 02:01:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344464903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:10,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562691206] [2023-12-22 02:01:10,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:10,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:10,984 INFO L87 Difference]: Start difference. First operand 3199 states and 5083 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:11,040 INFO L93 Difference]: Finished difference Result 6331 states and 9953 transitions. [2023-12-22 02:01:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:11,054 INFO L225 Difference]: With dead ends: 6331 [2023-12-22 02:01:11,054 INFO L226 Difference]: Without dead ends: 4693 [2023-12-22 02:01:11,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:11,059 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:11,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2023-12-22 02:01:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4691. [2023-12-22 02:01:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.5685647259543614) internal successors, (7355), 4690 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7355 transitions. [2023-12-22 02:01:11,133 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7355 transitions. Word has length 78 [2023-12-22 02:01:11,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:11,134 INFO L495 AbstractCegarLoop]: Abstraction has 4691 states and 7355 transitions. [2023-12-22 02:01:11,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7355 transitions. [2023-12-22 02:01:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:11,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:11,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:11,146 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 (11)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:11,337 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 02:01:11,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:11,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1071600913, now seen corresponding path program 1 times [2023-12-22 02:01:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90161905] [2023-12-22 02:01:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:11,339 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 02:01:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:11,340 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 02:01:11,347 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 02:01:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:11,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:11,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:11,499 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 02:01:11,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:11,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90161905] [2023-12-22 02:01:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90161905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971512924] [2023-12-22 02:01:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:11,501 INFO L87 Difference]: Start difference. First operand 4691 states and 7355 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:11,560 INFO L93 Difference]: Finished difference Result 10663 states and 16517 transitions. [2023-12-22 02:01:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:11,578 INFO L225 Difference]: With dead ends: 10663 [2023-12-22 02:01:11,578 INFO L226 Difference]: Without dead ends: 7533 [2023-12-22 02:01:11,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:11,583 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:11,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2023-12-22 02:01:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 7531. [2023-12-22 02:01:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7531 states, 7529 states have (on average 1.5421702749369106) internal successors, (11611), 7530 states have internal predecessors, (11611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7531 states to 7531 states and 11611 transitions. [2023-12-22 02:01:11,694 INFO L78 Accepts]: Start accepts. Automaton has 7531 states and 11611 transitions. Word has length 78 [2023-12-22 02:01:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:11,695 INFO L495 AbstractCegarLoop]: Abstraction has 7531 states and 11611 transitions. [2023-12-22 02:01:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7531 states and 11611 transitions. [2023-12-22 02:01:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:11,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:11,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:11,700 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 02:01:11,898 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 02:01:11,898 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:11,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -182867473, now seen corresponding path program 1 times [2023-12-22 02:01:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337906202] [2023-12-22 02:01:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:11,899 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 02:01:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:11,900 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 02:01:11,901 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 02:01:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:12,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:12,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:12,069 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 02:01:12,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:12,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337906202] [2023-12-22 02:01:12,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337906202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:12,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:12,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668685184] [2023-12-22 02:01:12,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:12,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:12,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:12,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:12,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:12,071 INFO L87 Difference]: Start difference. First operand 7531 states and 11611 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:12,168 INFO L93 Difference]: Finished difference Result 18895 states and 28781 transitions. [2023-12-22 02:01:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:12,202 INFO L225 Difference]: With dead ends: 18895 [2023-12-22 02:01:12,203 INFO L226 Difference]: Without dead ends: 12925 [2023-12-22 02:01:12,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:12,211 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:12,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2023-12-22 02:01:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 12923. [2023-12-22 02:01:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12923 states, 12921 states have (on average 1.5128086061450352) internal successors, (19547), 12922 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12923 states to 12923 states and 19547 transitions. [2023-12-22 02:01:12,404 INFO L78 Accepts]: Start accepts. Automaton has 12923 states and 19547 transitions. Word has length 78 [2023-12-22 02:01:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:12,404 INFO L495 AbstractCegarLoop]: Abstraction has 12923 states and 19547 transitions. [2023-12-22 02:01:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 12923 states and 19547 transitions. [2023-12-22 02:01:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:01:12,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:12,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:12,407 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 (13)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:12,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:12,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -445944849, now seen corresponding path program 1 times [2023-12-22 02:01:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:12,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705333627] [2023-12-22 02:01:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:12,609 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 02:01:12,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:12,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:12,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 02:01:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:12,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:12,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:12,764 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 02:01:12,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:12,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705333627] [2023-12-22 02:01:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705333627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:12,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122753768] [2023-12-22 02:01:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:12,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:12,766 INFO L87 Difference]: Start difference. First operand 12923 states and 19547 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:13,001 INFO L93 Difference]: Finished difference Result 34495 states and 51581 transitions. [2023-12-22 02:01:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:01:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:13,041 INFO L225 Difference]: With dead ends: 34495 [2023-12-22 02:01:13,042 INFO L226 Difference]: Without dead ends: 23133 [2023-12-22 02:01:13,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 02:01:13,055 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:13,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23133 states. [2023-12-22 02:01:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23133 to 23131. [2023-12-22 02:01:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23131 states, 23129 states have (on average 1.4815599463876519) internal successors, (34267), 23130 states have internal predecessors, (34267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23131 states to 23131 states and 34267 transitions. [2023-12-22 02:01:13,464 INFO L78 Accepts]: Start accepts. Automaton has 23131 states and 34267 transitions. Word has length 78 [2023-12-22 02:01:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:13,464 INFO L495 AbstractCegarLoop]: Abstraction has 23131 states and 34267 transitions. [2023-12-22 02:01:13,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23131 states and 34267 transitions. [2023-12-22 02:01:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 02:01:13,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:13,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:13,476 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 (14)] Ended with exit code 0 [2023-12-22 02:01:13,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:13,676 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:13,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash 559870242, now seen corresponding path program 1 times [2023-12-22 02:01:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325421453] [2023-12-22 02:01:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:13,678 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 02:01:13,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:13,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:13,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:01:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:13,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:01:13,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:14,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:01:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:15,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325421453] [2023-12-22 02:01:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325421453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:01:15,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:01:15,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:01:15,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060892120] [2023-12-22 02:01:15,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:01:15,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:01:15,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:01:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:01:15,029 INFO L87 Difference]: Start difference. First operand 23131 states and 34267 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:18,002 INFO L93 Difference]: Finished difference Result 70437 states and 103264 transitions. [2023-12-22 02:01:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:01:18,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 02:01:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:18,075 INFO L225 Difference]: With dead ends: 70437 [2023-12-22 02:01:18,075 INFO L226 Difference]: Without dead ends: 55459 [2023-12-22 02:01:18,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 02:01:18,087 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 4152 mSDsluCounter, 12713 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4152 SdHoareTripleChecker+Valid, 14303 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:18,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4152 Valid, 14303 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-22 02:01:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55459 states. [2023-12-22 02:01:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55459 to 44699. [2023-12-22 02:01:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44699 states, 44697 states have (on average 1.4725596796205562) internal successors, (65819), 44698 states have internal predecessors, (65819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44699 states to 44699 states and 65819 transitions. [2023-12-22 02:01:19,072 INFO L78 Accepts]: Start accepts. Automaton has 44699 states and 65819 transitions. Word has length 100 [2023-12-22 02:01:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:19,073 INFO L495 AbstractCegarLoop]: Abstraction has 44699 states and 65819 transitions. [2023-12-22 02:01:19,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 44699 states and 65819 transitions. [2023-12-22 02:01:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 02:01:19,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:19,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:19,080 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 (15)] Ended with exit code 0 [2023-12-22 02:01:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:19,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1315254306, now seen corresponding path program 1 times [2023-12-22 02:01:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448210560] [2023-12-22 02:01:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:19,281 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 02:01:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:19,282 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:19,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 02:01:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:19,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:19,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:19,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:19,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448210560] [2023-12-22 02:01:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448210560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864507440] [2023-12-22 02:01:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:19,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:19,411 INFO L87 Difference]: Start difference. First operand 44699 states and 65819 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:20,066 INFO L93 Difference]: Finished difference Result 74677 states and 110196 transitions. [2023-12-22 02:01:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:20,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 02:01:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:20,104 INFO L225 Difference]: With dead ends: 74677 [2023-12-22 02:01:20,104 INFO L226 Difference]: Without dead ends: 31539 [2023-12-22 02:01:20,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 02:01:20,131 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 63 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:20,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3197 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2023-12-22 02:01:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 31532. [2023-12-22 02:01:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31532 states, 31530 states have (on average 1.4750396447827465) internal successors, (46508), 31531 states have internal predecessors, (46508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31532 states to 31532 states and 46508 transitions. [2023-12-22 02:01:20,849 INFO L78 Accepts]: Start accepts. Automaton has 31532 states and 46508 transitions. Word has length 100 [2023-12-22 02:01:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:20,850 INFO L495 AbstractCegarLoop]: Abstraction has 31532 states and 46508 transitions. [2023-12-22 02:01:20,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 31532 states and 46508 transitions. [2023-12-22 02:01:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 02:01:20,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:20,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:20,855 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 (16)] Ended with exit code 0 [2023-12-22 02:01:21,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:21,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:21,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -338323220, now seen corresponding path program 1 times [2023-12-22 02:01:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610999968] [2023-12-22 02:01:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:21,055 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 02:01:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:21,057 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:21,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 02:01:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:21,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:21,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-22 02:01:21,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:21,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610999968] [2023-12-22 02:01:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610999968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:21,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:01:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312341551] [2023-12-22 02:01:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:21,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:21,263 INFO L87 Difference]: Start difference. First operand 31532 states and 46508 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:55,096 INFO L93 Difference]: Finished difference Result 34538 states and 51435 transitions. [2023-12-22 02:01:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:55,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 02:01:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:55,128 INFO L225 Difference]: With dead ends: 34538 [2023-12-22 02:01:55,128 INFO L226 Difference]: Without dead ends: 33034 [2023-12-22 02:01:55,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 02:01:55,134 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 866 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:55,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 612 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2023-12-22 02:01:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33034 states. [2023-12-22 02:01:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33034 to 33034. [2023-12-22 02:01:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33034 states, 33032 states have (on average 1.4630661177040445) internal successors, (48328), 33033 states have internal predecessors, (48328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33034 states to 33034 states and 48328 transitions. [2023-12-22 02:01:55,876 INFO L78 Accepts]: Start accepts. Automaton has 33034 states and 48328 transitions. Word has length 100 [2023-12-22 02:01:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:55,876 INFO L495 AbstractCegarLoop]: Abstraction has 33034 states and 48328 transitions. [2023-12-22 02:01:55,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 33034 states and 48328 transitions. [2023-12-22 02:01:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 02:01:55,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:55,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:55,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:56,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:56,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1679708498, now seen corresponding path program 1 times [2023-12-22 02:01:56,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:56,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230044246] [2023-12-22 02:01:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:56,084 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 02:01:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:56,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:56,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 02:01:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:56,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:01:56,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:56,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:01:56,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230044246] [2023-12-22 02:01:56,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230044246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:01:56,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:01:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:01:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137394628] [2023-12-22 02:01:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:01:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:01:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:01:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:01:56,244 INFO L87 Difference]: Start difference. First operand 33034 states and 48328 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:56,584 INFO L93 Difference]: Finished difference Result 48014 states and 70314 transitions. [2023-12-22 02:01:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:01:56,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-22 02:01:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:56,604 INFO L225 Difference]: With dead ends: 48014 [2023-12-22 02:01:56,604 INFO L226 Difference]: Without dead ends: 18060 [2023-12-22 02:01:56,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 02:01:56,623 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 59 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:56,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:01:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2023-12-22 02:01:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 18058. [2023-12-22 02:01:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18058 states, 18056 states have (on average 1.4483828090385467) internal successors, (26152), 18057 states have internal predecessors, (26152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18058 states to 18058 states and 26152 transitions. [2023-12-22 02:01:56,932 INFO L78 Accepts]: Start accepts. Automaton has 18058 states and 26152 transitions. Word has length 102 [2023-12-22 02:01:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:01:56,932 INFO L495 AbstractCegarLoop]: Abstraction has 18058 states and 26152 transitions. [2023-12-22 02:01:56,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 18058 states and 26152 transitions. [2023-12-22 02:01:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-22 02:01:56,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:01:56,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:01:56,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 02:01:57,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:01:57,139 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:01:57,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:01:57,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1465720534, now seen corresponding path program 1 times [2023-12-22 02:01:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:01:57,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925960353] [2023-12-22 02:01:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:01:57,140 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 02:01:57,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:01:57,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:01:57,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:01:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:01:57,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:01:57,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:01:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:58,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:01:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:01:58,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:01:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925960353] [2023-12-22 02:01:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925960353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:01:58,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:01:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:01:58,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381609917] [2023-12-22 02:01:58,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:01:58,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:01:58,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:01:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:01:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:01:58,632 INFO L87 Difference]: Start difference. First operand 18058 states and 26152 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:01,165 INFO L93 Difference]: Finished difference Result 60882 states and 87980 transitions. [2023-12-22 02:02:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:02:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-22 02:02:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:01,216 INFO L225 Difference]: With dead ends: 60882 [2023-12-22 02:02:01,216 INFO L226 Difference]: Without dead ends: 45904 [2023-12-22 02:02:01,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:02:01,245 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 3658 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 12868 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:01,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3658 Valid, 12868 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 02:02:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45904 states. [2023-12-22 02:02:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45904 to 34186. [2023-12-22 02:02:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34186 states, 34184 states have (on average 1.430610812075825) internal successors, (48904), 34185 states have internal predecessors, (48904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34186 states to 34186 states and 48904 transitions. [2023-12-22 02:02:02,101 INFO L78 Accepts]: Start accepts. Automaton has 34186 states and 48904 transitions. Word has length 103 [2023-12-22 02:02:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:02,101 INFO L495 AbstractCegarLoop]: Abstraction has 34186 states and 48904 transitions. [2023-12-22 02:02:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 34186 states and 48904 transitions. [2023-12-22 02:02:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-22 02:02:02,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:02,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:02,109 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 (19)] Ended with exit code 0 [2023-12-22 02:02:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:02:02,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:02,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -187695818, now seen corresponding path program 1 times [2023-12-22 02:02:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996406072] [2023-12-22 02:02:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:02,308 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 02:02:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:02,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:02:02,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 02:02:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:02,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:02:02,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:02,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:02:02,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996406072] [2023-12-22 02:02:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996406072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:02:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:02:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:02:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828222638] [2023-12-22 02:02:02,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:02:02,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:02:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:02:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:02:02,486 INFO L87 Difference]: Start difference. First operand 34186 states and 48904 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:42,250 INFO L93 Difference]: Finished difference Result 40198 states and 57472 transitions. [2023-12-22 02:02:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:02:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-22 02:02:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:42,296 INFO L225 Difference]: With dead ends: 40198 [2023-12-22 02:02:42,296 INFO L226 Difference]: Without dead ends: 37192 [2023-12-22 02:02:42,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 02:02:42,310 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1056 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:42,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 720 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 39.2s Time] [2023-12-22 02:02:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37192 states. [2023-12-22 02:02:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37192 to 37190. [2023-12-22 02:02:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37190 states, 37188 states have (on average 1.414569215876089) internal successors, (52605), 37189 states have internal predecessors, (52605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37190 states to 37190 states and 52605 transitions. [2023-12-22 02:02:43,126 INFO L78 Accepts]: Start accepts. Automaton has 37190 states and 52605 transitions. Word has length 104 [2023-12-22 02:02:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:43,126 INFO L495 AbstractCegarLoop]: Abstraction has 37190 states and 52605 transitions. [2023-12-22 02:02:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 37190 states and 52605 transitions. [2023-12-22 02:02:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 02:02:43,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:43,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:43,136 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 (20)] Ended with exit code 0 [2023-12-22 02:02:43,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 02:02:43,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:43,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash 557149266, now seen corresponding path program 1 times [2023-12-22 02:02:43,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:43,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649017902] [2023-12-22 02:02:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:43,333 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 02:02:43,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:43,335 INFO L229 MonitoredProcess]: Starting monitored process 21 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 02:02:43,336 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 (21)] Waiting until timeout for monitored process [2023-12-22 02:02:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:43,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:02:43,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:43,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:02:43,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649017902] [2023-12-22 02:02:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649017902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:02:43,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:02:43,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:02:43,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601116309] [2023-12-22 02:02:43,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:02:43,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:02:43,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:02:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:02:43,475 INFO L87 Difference]: Start difference. First operand 37190 states and 52605 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:43,892 INFO L93 Difference]: Finished difference Result 52746 states and 74879 transitions. [2023-12-22 02:02:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:02:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-22 02:02:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:43,922 INFO L225 Difference]: With dead ends: 52746 [2023-12-22 02:02:43,922 INFO L226 Difference]: Without dead ends: 21640 [2023-12-22 02:02:43,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 02:02:43,942 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 55 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:43,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:02:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21640 states. [2023-12-22 02:02:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21640 to 21638. [2023-12-22 02:02:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21638 states, 21636 states have (on average 1.3930948419301166) internal successors, (30141), 21637 states have internal predecessors, (30141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21638 states to 21638 states and 30141 transitions. [2023-12-22 02:02:44,331 INFO L78 Accepts]: Start accepts. Automaton has 21638 states and 30141 transitions. Word has length 105 [2023-12-22 02:02:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:44,332 INFO L495 AbstractCegarLoop]: Abstraction has 21638 states and 30141 transitions. [2023-12-22 02:02:44,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 21638 states and 30141 transitions. [2023-12-22 02:02:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-22 02:02:44,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:44,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:44,348 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 (21)] Forceful destruction successful, exit code 0 [2023-12-22 02:02:44,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 02:02:44,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:44,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:44,546 INFO L85 PathProgramCache]: Analyzing trace with hash 615736022, now seen corresponding path program 1 times [2023-12-22 02:02:44,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401222670] [2023-12-22 02:02:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:44,547 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 02:02:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:44,548 INFO L229 MonitoredProcess]: Starting monitored process 22 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 02:02:44,549 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 (22)] Waiting until timeout for monitored process [2023-12-22 02:02:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:44,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:02:44,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:45,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:02:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:45,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401222670] [2023-12-22 02:02:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401222670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:02:45,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:02:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:02:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279774403] [2023-12-22 02:02:45,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:02:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:02:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:02:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:02:45,863 INFO L87 Difference]: Start difference. First operand 21638 states and 30141 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:48,047 INFO L93 Difference]: Finished difference Result 64462 states and 90625 transitions. [2023-12-22 02:02:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:02:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-22 02:02:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:48,103 INFO L225 Difference]: With dead ends: 64462 [2023-12-22 02:02:48,103 INFO L226 Difference]: Without dead ends: 48908 [2023-12-22 02:02:48,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:02:48,115 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 2368 mSDsluCounter, 8011 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 9646 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:48,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 9646 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:02:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48908 states. [2023-12-22 02:02:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48908 to 38342. [2023-12-22 02:02:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38342 states, 38340 states have (on average 1.3870892018779342) internal successors, (53181), 38341 states have internal predecessors, (53181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38342 states to 38342 states and 53181 transitions. [2023-12-22 02:02:49,101 INFO L78 Accepts]: Start accepts. Automaton has 38342 states and 53181 transitions. Word has length 106 [2023-12-22 02:02:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:49,102 INFO L495 AbstractCegarLoop]: Abstraction has 38342 states and 53181 transitions. [2023-12-22 02:02:49,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 38342 states and 53181 transitions. [2023-12-22 02:02:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-22 02:02:49,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:49,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:49,107 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 (22)] Forceful destruction successful, exit code 0 [2023-12-22 02:02:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 02:02:49,313 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:49,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2049858974, now seen corresponding path program 1 times [2023-12-22 02:02:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110621626] [2023-12-22 02:02:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:49,315 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 02:02:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:49,316 INFO L229 MonitoredProcess]: Starting monitored process 23 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 02:02:49,320 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 (23)] Waiting until timeout for monitored process [2023-12-22 02:02:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:49,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:02:49,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:49,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:02:49,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110621626] [2023-12-22 02:02:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110621626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:02:49,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:02:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:02:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583871575] [2023-12-22 02:02:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:02:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:02:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:02:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:02:49,470 INFO L87 Difference]: Start difference. First operand 38342 states and 53181 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:49,812 INFO L93 Difference]: Finished difference Result 54474 states and 75743 transitions. [2023-12-22 02:02:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:02:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-22 02:02:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:49,836 INFO L225 Difference]: With dead ends: 54474 [2023-12-22 02:02:49,836 INFO L226 Difference]: Without dead ends: 22216 [2023-12-22 02:02:49,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 02:02:49,857 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 51 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:49,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:02:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22216 states. [2023-12-22 02:02:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22216 to 22214. [2023-12-22 02:02:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22214 states, 22212 states have (on average 1.369935170178282) internal successors, (30429), 22213 states have internal predecessors, (30429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22214 states to 22214 states and 30429 transitions. [2023-12-22 02:02:50,253 INFO L78 Accepts]: Start accepts. Automaton has 22214 states and 30429 transitions. Word has length 108 [2023-12-22 02:02:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:50,444 INFO L495 AbstractCegarLoop]: Abstraction has 22214 states and 30429 transitions. [2023-12-22 02:02:50,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22214 states and 30429 transitions. [2023-12-22 02:02:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-22 02:02:50,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:50,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:50,449 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 (23)] Ended with exit code 0 [2023-12-22 02:02:50,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 02:02:50,646 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:50,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash -623486454, now seen corresponding path program 1 times [2023-12-22 02:02:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:50,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69206620] [2023-12-22 02:02:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:50,647 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 02:02:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:50,649 INFO L229 MonitoredProcess]: Starting monitored process 24 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 02:02:50,650 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 (24)] Waiting until timeout for monitored process [2023-12-22 02:02:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:50,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:02:50,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:51,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:02:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:51,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69206620] [2023-12-22 02:02:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69206620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:02:51,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:02:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:02:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716880438] [2023-12-22 02:02:51,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:02:51,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:02:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:02:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:02:51,944 INFO L87 Difference]: Start difference. First operand 22214 states and 30429 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:53,944 INFO L93 Difference]: Finished difference Result 65038 states and 89569 transitions. [2023-12-22 02:02:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:02:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-22 02:02:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:53,994 INFO L225 Difference]: With dead ends: 65038 [2023-12-22 02:02:53,994 INFO L226 Difference]: Without dead ends: 48908 [2023-12-22 02:02:54,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:02:54,012 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 3572 mSDsluCounter, 9475 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:54,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 11092 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 02:02:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48908 states. [2023-12-22 02:02:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48908 to 39494. [2023-12-22 02:02:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39494 states, 39492 states have (on average 1.3612123974475843) internal successors, (53757), 39493 states have internal predecessors, (53757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39494 states to 39494 states and 53757 transitions. [2023-12-22 02:02:54,971 INFO L78 Accepts]: Start accepts. Automaton has 39494 states and 53757 transitions. Word has length 109 [2023-12-22 02:02:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:54,972 INFO L495 AbstractCegarLoop]: Abstraction has 39494 states and 53757 transitions. [2023-12-22 02:02:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 39494 states and 53757 transitions. [2023-12-22 02:02:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 02:02:54,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:54,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:54,980 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 (24)] Forceful destruction successful, exit code 0 [2023-12-22 02:02:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 02:02:55,178 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:55,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2097747938, now seen corresponding path program 1 times [2023-12-22 02:02:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225431661] [2023-12-22 02:02:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:55,179 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 02:02:55,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:55,180 INFO L229 MonitoredProcess]: Starting monitored process 25 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 02:02:55,181 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 (25)] Waiting until timeout for monitored process [2023-12-22 02:02:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:55,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:02:55,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:55,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:02:55,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225431661] [2023-12-22 02:02:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225431661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:02:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:02:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:02:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704658825] [2023-12-22 02:02:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:02:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:02:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:02:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:02:55,335 INFO L87 Difference]: Start difference. First operand 39494 states and 53757 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:02:55,858 INFO L93 Difference]: Finished difference Result 56202 states and 76607 transitions. [2023-12-22 02:02:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:02:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 02:02:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:02:55,881 INFO L225 Difference]: With dead ends: 56202 [2023-12-22 02:02:55,881 INFO L226 Difference]: Without dead ends: 22792 [2023-12-22 02:02:55,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 02:02:55,904 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 47 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:02:55,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:02:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22792 states. [2023-12-22 02:02:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22792 to 22790. [2023-12-22 02:02:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22790 states, 22788 states have (on average 1.3479462875197472) internal successors, (30717), 22789 states have internal predecessors, (30717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22790 states to 22790 states and 30717 transitions. [2023-12-22 02:02:56,554 INFO L78 Accepts]: Start accepts. Automaton has 22790 states and 30717 transitions. Word has length 111 [2023-12-22 02:02:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:56,555 INFO L495 AbstractCegarLoop]: Abstraction has 22790 states and 30717 transitions. [2023-12-22 02:02:56,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 22790 states and 30717 transitions. [2023-12-22 02:02:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 02:02:56,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:56,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:56,560 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 (25)] Forceful destruction successful, exit code 0 [2023-12-22 02:02:56,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 02:02:56,760 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:56,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -310337910, now seen corresponding path program 1 times [2023-12-22 02:02:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775564273] [2023-12-22 02:02:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:56,762 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 02:02:56,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:56,763 INFO L229 MonitoredProcess]: Starting monitored process 26 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 02:02:56,765 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 (26)] Waiting until timeout for monitored process [2023-12-22 02:02:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:56,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:02:56,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:57,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:02:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:58,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775564273] [2023-12-22 02:02:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775564273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:02:58,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:02:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:02:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138331949] [2023-12-22 02:02:58,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:02:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:02:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:02:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:02:58,086 INFO L87 Difference]: Start difference. First operand 22790 states and 30717 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:00,578 INFO L93 Difference]: Finished difference Result 65614 states and 88513 transitions. [2023-12-22 02:03:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:03:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-22 02:03:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:00,629 INFO L225 Difference]: With dead ends: 65614 [2023-12-22 02:03:00,629 INFO L226 Difference]: Without dead ends: 48908 [2023-12-22 02:03:00,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:03:00,644 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1916 mSDsluCounter, 12516 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 14115 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:00,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 14115 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 02:03:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48908 states. [2023-12-22 02:03:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48908 to 40646. [2023-12-22 02:03:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40646 states, 40644 states have (on average 1.3368024800708591) internal successors, (54333), 40645 states have internal predecessors, (54333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40646 states to 40646 states and 54333 transitions. [2023-12-22 02:03:01,882 INFO L78 Accepts]: Start accepts. Automaton has 40646 states and 54333 transitions. Word has length 112 [2023-12-22 02:03:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:01,882 INFO L495 AbstractCegarLoop]: Abstraction has 40646 states and 54333 transitions. [2023-12-22 02:03:01,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 40646 states and 54333 transitions. [2023-12-22 02:03:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 02:03:01,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:01,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:01,888 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 (26)] Forceful destruction successful, exit code 0 [2023-12-22 02:03:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 02:03:02,088 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:02,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -597147670, now seen corresponding path program 1 times [2023-12-22 02:03:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:02,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671364389] [2023-12-22 02:03:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:02,089 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 02:03:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:02,089 INFO L229 MonitoredProcess]: Starting monitored process 27 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 02:03:02,091 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 (27)] Waiting until timeout for monitored process [2023-12-22 02:03:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:02,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:03:02,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:02,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:03:02,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:02,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671364389] [2023-12-22 02:03:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671364389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:03:02,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:03:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:03:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094024839] [2023-12-22 02:03:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:03:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:03:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:03:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:03:02,242 INFO L87 Difference]: Start difference. First operand 40646 states and 54333 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:02,837 INFO L93 Difference]: Finished difference Result 57930 states and 77471 transitions. [2023-12-22 02:03:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:03:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-22 02:03:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:02,862 INFO L225 Difference]: With dead ends: 57930 [2023-12-22 02:03:02,862 INFO L226 Difference]: Without dead ends: 23368 [2023-12-22 02:03:02,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 02:03:02,869 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 43 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:02,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:03:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23368 states. [2023-12-22 02:03:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23368 to 23366. [2023-12-22 02:03:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23366 states, 23364 states have (on average 1.3270416024653313) internal successors, (31005), 23365 states have internal predecessors, (31005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23366 states to 23366 states and 31005 transitions. [2023-12-22 02:03:03,355 INFO L78 Accepts]: Start accepts. Automaton has 23366 states and 31005 transitions. Word has length 114 [2023-12-22 02:03:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:03,355 INFO L495 AbstractCegarLoop]: Abstraction has 23366 states and 31005 transitions. [2023-12-22 02:03:03,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23366 states and 31005 transitions. [2023-12-22 02:03:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 02:03:03,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:03,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:03,365 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 (27)] Forceful destruction successful, exit code 0 [2023-12-22 02:03:03,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 02:03:03,561 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:03,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1662025922, now seen corresponding path program 1 times [2023-12-22 02:03:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:03,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388953610] [2023-12-22 02:03:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:03,561 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 02:03:03,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:03,563 INFO L229 MonitoredProcess]: Starting monitored process 28 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 02:03:03,564 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 (28)] Waiting until timeout for monitored process [2023-12-22 02:03:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:03,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:03:03,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:04,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:03:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:04,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:04,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388953610] [2023-12-22 02:03:04,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388953610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:03:04,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:03:04,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:03:04,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98345053] [2023-12-22 02:03:04,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:03:04,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:03:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:03:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:03:04,889 INFO L87 Difference]: Start difference. First operand 23366 states and 31005 transitions. Second operand has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:07,781 INFO L93 Difference]: Finished difference Result 66190 states and 87457 transitions. [2023-12-22 02:03:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:03:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 02:03:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:07,837 INFO L225 Difference]: With dead ends: 66190 [2023-12-22 02:03:07,837 INFO L226 Difference]: Without dead ends: 48908 [2023-12-22 02:03:07,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:03:07,853 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 3576 mSDsluCounter, 14055 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3576 SdHoareTripleChecker+Valid, 15636 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:07,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3576 Valid, 15636 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 02:03:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48908 states. [2023-12-22 02:03:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48908 to 41798. [2023-12-22 02:03:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41798 states, 41796 states have (on average 1.3137381567614126) internal successors, (54909), 41797 states have internal predecessors, (54909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41798 states to 41798 states and 54909 transitions. [2023-12-22 02:03:09,080 INFO L78 Accepts]: Start accepts. Automaton has 41798 states and 54909 transitions. Word has length 115 [2023-12-22 02:03:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:09,081 INFO L495 AbstractCegarLoop]: Abstraction has 41798 states and 54909 transitions. [2023-12-22 02:03:09,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.875) internal successors, (222), 16 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 41798 states and 54909 transitions. [2023-12-22 02:03:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 02:03:09,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:09,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:09,086 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 (28)] Ended with exit code 0 [2023-12-22 02:03:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 02:03:09,286 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:09,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash 238311914, now seen corresponding path program 1 times [2023-12-22 02:03:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237743106] [2023-12-22 02:03:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:09,287 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 02:03:09,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:09,288 INFO L229 MonitoredProcess]: Starting monitored process 29 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 02:03:09,290 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 (29)] Waiting until timeout for monitored process [2023-12-22 02:03:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:09,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:03:09,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:09,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:03:09,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237743106] [2023-12-22 02:03:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237743106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:03:09,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:03:09,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:03:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701806975] [2023-12-22 02:03:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:03:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:03:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:03:09,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:03:09,450 INFO L87 Difference]: Start difference. First operand 41798 states and 54909 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:10,108 INFO L93 Difference]: Finished difference Result 59550 states and 78104 transitions. [2023-12-22 02:03:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:03:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-22 02:03:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:10,136 INFO L225 Difference]: With dead ends: 59550 [2023-12-22 02:03:10,137 INFO L226 Difference]: Without dead ends: 23836 [2023-12-22 02:03:10,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 02:03:10,150 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 39 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:10,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:03:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23836 states. [2023-12-22 02:03:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23836 to 23834. [2023-12-22 02:03:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23834 states, 23832 states have (on average 1.3034155756965424) internal successors, (31063), 23833 states have internal predecessors, (31063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23834 states to 23834 states and 31063 transitions. [2023-12-22 02:03:10,713 INFO L78 Accepts]: Start accepts. Automaton has 23834 states and 31063 transitions. Word has length 117 [2023-12-22 02:03:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:10,715 INFO L495 AbstractCegarLoop]: Abstraction has 23834 states and 31063 transitions. [2023-12-22 02:03:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23834 states and 31063 transitions. [2023-12-22 02:03:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 02:03:10,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:10,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:10,723 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 (29)] Forceful destruction successful, exit code 0 [2023-12-22 02:03:10,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 02:03:10,920 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:10,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash -643849154, now seen corresponding path program 1 times [2023-12-22 02:03:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:10,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315810] [2023-12-22 02:03:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:10,921 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 02:03:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:10,922 INFO L229 MonitoredProcess]: Starting monitored process 30 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 02:03:10,923 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 (30)] Waiting until timeout for monitored process [2023-12-22 02:03:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:11,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:03:11,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:12,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:03:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:12,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:12,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315810] [2023-12-22 02:03:12,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:03:12,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:03:12,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:03:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151203469] [2023-12-22 02:03:12,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:03:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:03:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:03:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:03:12,419 INFO L87 Difference]: Start difference. First operand 23834 states and 31063 transitions. Second operand has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:14,791 INFO L93 Difference]: Finished difference Result 56512 states and 73026 transitions. [2023-12-22 02:03:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 02:03:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-22 02:03:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:14,839 INFO L225 Difference]: With dead ends: 56512 [2023-12-22 02:03:14,839 INFO L226 Difference]: Without dead ends: 38762 [2023-12-22 02:03:14,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 02:03:14,853 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1918 mSDsluCounter, 12416 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 13979 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:14,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 13979 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:03:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38762 states. [2023-12-22 02:03:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38762 to 36392. [2023-12-22 02:03:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36392 states, 36390 states have (on average 1.2877164056059356) internal successors, (46860), 36391 states have internal predecessors, (46860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36392 states to 36392 states and 46860 transitions. [2023-12-22 02:03:15,995 INFO L78 Accepts]: Start accepts. Automaton has 36392 states and 46860 transitions. Word has length 118 [2023-12-22 02:03:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:15,995 INFO L495 AbstractCegarLoop]: Abstraction has 36392 states and 46860 transitions. [2023-12-22 02:03:15,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.375) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36392 states and 46860 transitions. [2023-12-22 02:03:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-22 02:03:15,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:15,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:16,002 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 (30)] Ended with exit code 0 [2023-12-22 02:03:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 02:03:16,205 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:16,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686218, now seen corresponding path program 1 times [2023-12-22 02:03:16,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:16,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41734424] [2023-12-22 02:03:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:16,206 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 02:03:16,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:16,208 INFO L229 MonitoredProcess]: Starting monitored process 31 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 02:03:16,209 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 (31)] Waiting until timeout for monitored process [2023-12-22 02:03:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:16,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 02:03:16,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:03:16,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:03:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:03:16,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41734424] [2023-12-22 02:03:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41734424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:03:16,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:03:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 02:03:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329813490] [2023-12-22 02:03:16,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:03:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:03:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:03:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:03:16,719 INFO L87 Difference]: Start difference. First operand 36392 states and 46860 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:19,778 INFO L93 Difference]: Finished difference Result 123140 states and 156088 transitions. [2023-12-22 02:03:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:03:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-22 02:03:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:19,896 INFO L225 Difference]: With dead ends: 123140 [2023-12-22 02:03:19,896 INFO L226 Difference]: Without dead ends: 92832 [2023-12-22 02:03:19,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:03:19,920 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 3083 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:19,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3083 Valid, 3395 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:03:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92832 states. [2023-12-22 02:03:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92832 to 91114. [2023-12-22 02:03:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91114 states, 91112 states have (on average 1.2356440424971464) internal successors, (112582), 91113 states have internal predecessors, (112582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91114 states to 91114 states and 112582 transitions. [2023-12-22 02:03:23,318 INFO L78 Accepts]: Start accepts. Automaton has 91114 states and 112582 transitions. Word has length 120 [2023-12-22 02:03:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 91114 states and 112582 transitions. [2023-12-22 02:03:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 91114 states and 112582 transitions. [2023-12-22 02:03:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 02:03:23,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:23,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:23,327 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 (31)] Ended with exit code 0 [2023-12-22 02:03:23,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 02:03:23,526 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:23,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2059168853, now seen corresponding path program 1 times [2023-12-22 02:03:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535652335] [2023-12-22 02:03:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:03:23,527 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 02:03:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:23,528 INFO L229 MonitoredProcess]: Starting monitored process 32 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 02:03:23,535 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 (32)] Waiting until timeout for monitored process [2023-12-22 02:03:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:03:23,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:03:23,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:03:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:03:23,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:03:23,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:03:23,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535652335] [2023-12-22 02:03:23,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535652335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:03:23,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:03:23,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:03:23,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398172610] [2023-12-22 02:03:23,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:03:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:03:23,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:03:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:03:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:03:23,775 INFO L87 Difference]: Start difference. First operand 91114 states and 112582 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:04:06,523 INFO L93 Difference]: Finished difference Result 102381 states and 127680 transitions. [2023-12-22 02:04:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:04:06,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-22 02:04:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:04:06,648 INFO L225 Difference]: With dead ends: 102381 [2023-12-22 02:04:06,648 INFO L226 Difference]: Without dead ends: 96371 [2023-12-22 02:04:06,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 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 02:04:06,671 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 790 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:04:06,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 799 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 40.2s Time] [2023-12-22 02:04:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96371 states. [2023-12-22 02:04:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96371 to 95620. [2023-12-22 02:04:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2283670438620344) internal successors, (117454), 95619 states have internal predecessors, (117454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 117454 transitions. [2023-12-22 02:04:09,836 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 117454 transitions. Word has length 138 [2023-12-22 02:04:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:04:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 117454 transitions. [2023-12-22 02:04:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 117454 transitions. [2023-12-22 02:04:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-22 02:04:09,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:04:09,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:09,862 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 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:04:10,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 02:04:10,062 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:04:10,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:04:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1278072627, now seen corresponding path program 1 times [2023-12-22 02:04:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:04:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446212750] [2023-12-22 02:04:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:04:10,065 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 02:04:10,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:04:10,066 INFO L229 MonitoredProcess]: Starting monitored process 33 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 02:04:10,067 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 (33)] Waiting until timeout for monitored process [2023-12-22 02:04:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:04:10,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 02:04:10,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:04:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:04:10,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:04:10,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:04:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446212750] [2023-12-22 02:04:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446212750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:04:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:04:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:04:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363217154] [2023-12-22 02:04:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:04:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:04:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:04:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:04:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:04:10,657 INFO L87 Difference]: Start difference. First operand 95620 states and 117454 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:04:39,298 INFO L93 Difference]: Finished difference Result 100879 states and 124472 transitions. [2023-12-22 02:04:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:04:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-22 02:04:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:04:39,413 INFO L225 Difference]: With dead ends: 100879 [2023-12-22 02:04:39,414 INFO L226 Difference]: Without dead ends: 95620 [2023-12-22 02:04:39,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 02:04:39,437 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 749 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:04:39,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 835 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2023-12-22 02:04:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95620 states. [2023-12-22 02:04:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95620 to 95620. [2023-12-22 02:04:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2283042941705538) internal successors, (117448), 95619 states have internal predecessors, (117448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 117448 transitions. [2023-12-22 02:04:42,336 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 117448 transitions. Word has length 173 [2023-12-22 02:04:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:04:42,336 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 117448 transitions. [2023-12-22 02:04:42,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 117448 transitions. [2023-12-22 02:04:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-22 02:04:42,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:04:42,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:04:42,365 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 (33)] Ended with exit code 0 [2023-12-22 02:04:42,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 02:04:42,564 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:04:42,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:04:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1931695044, now seen corresponding path program 1 times [2023-12-22 02:04:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:04:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592285566] [2023-12-22 02:04:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:04:42,565 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 02:04:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:04:42,566 INFO L229 MonitoredProcess]: Starting monitored process 34 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 02:04:42,567 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 (34)] Waiting until timeout for monitored process [2023-12-22 02:04:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:04:42,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:04:42,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:04:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:04:44,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:04:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:04:44,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:04:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592285566] [2023-12-22 02:04:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592285566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:04:44,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:04:44,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:04:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091743960] [2023-12-22 02:04:44,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:04:44,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:04:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:04:44,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:04:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:04:44,678 INFO L87 Difference]: Start difference. First operand 95620 states and 117448 transitions. Second operand has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:04:49,297 INFO L93 Difference]: Finished difference Result 152664 states and 188147 transitions. [2023-12-22 02:04:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 02:04:49,298 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-22 02:04:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:04:49,424 INFO L225 Difference]: With dead ends: 152664 [2023-12-22 02:04:49,424 INFO L226 Difference]: Without dead ends: 96510 [2023-12-22 02:04:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 02:04:49,485 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 21553 mSDsluCounter, 7968 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21553 SdHoareTripleChecker+Valid, 9527 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:04:49,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21553 Valid, 9527 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 02:04:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96510 states. [2023-12-22 02:04:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96510 to 95620. [2023-12-22 02:04:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2189650484218453) internal successors, (116555), 95619 states have internal predecessors, (116555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 116555 transitions. [2023-12-22 02:04:53,128 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 116555 transitions. Word has length 177 [2023-12-22 02:04:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:04:53,128 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 116555 transitions. [2023-12-22 02:04:53,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 25 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:04:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 116555 transitions. [2023-12-22 02:04:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-22 02:04:53,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:04:53,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:04:53,155 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 (34)] Forceful destruction successful, exit code 0 [2023-12-22 02:04:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 02:04:53,352 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:04:53,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:04:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1796252186, now seen corresponding path program 1 times [2023-12-22 02:04:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:04:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765494386] [2023-12-22 02:04:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:04:53,354 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 02:04:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:04:53,355 INFO L229 MonitoredProcess]: Starting monitored process 35 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 02:04:53,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-22 02:04:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:04:53,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:04:53,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:04:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 54 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:04:55,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:04:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 54 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:04:55,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:04:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765494386] [2023-12-22 02:04:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765494386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:04:55,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:04:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:04:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585410547] [2023-12-22 02:04:55,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:04:55,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:04:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:04:55,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:04:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:04:55,730 INFO L87 Difference]: Start difference. First operand 95620 states and 116555 transitions. Second operand has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:00,532 INFO L93 Difference]: Finished difference Result 152696 states and 187602 transitions. [2023-12-22 02:05:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:05:00,533 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-22 02:05:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:00,676 INFO L225 Difference]: With dead ends: 152696 [2023-12-22 02:05:00,676 INFO L226 Difference]: Without dead ends: 115014 [2023-12-22 02:05:00,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:05:00,710 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 18640 mSDsluCounter, 6606 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18640 SdHoareTripleChecker+Valid, 8165 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:00,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18640 Valid, 8165 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 02:05:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115014 states. [2023-12-22 02:05:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115014 to 95620. [2023-12-22 02:05:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2146144031458512) internal successors, (116139), 95619 states have internal predecessors, (116139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 116139 transitions. [2023-12-22 02:05:04,278 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 116139 transitions. Word has length 178 [2023-12-22 02:05:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:04,278 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 116139 transitions. [2023-12-22 02:05:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.615384615384615) internal successors, (328), 25 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 116139 transitions. [2023-12-22 02:05:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-22 02:05:04,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:04,296 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:04,300 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 (35)] Ended with exit code 0 [2023-12-22 02:05:04,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 02:05:04,500 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:04,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2143753196, now seen corresponding path program 1 times [2023-12-22 02:05:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:04,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532802781] [2023-12-22 02:05:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:04,501 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 02:05:04,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:04,502 INFO L229 MonitoredProcess]: Starting monitored process 36 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 02:05:04,507 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 (36)] Waiting until timeout for monitored process [2023-12-22 02:05:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:04,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:05:04,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 46 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:06,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:05:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 46 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:06,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532802781] [2023-12-22 02:05:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532802781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:05:06,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:05:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:05:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317098526] [2023-12-22 02:05:06,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:05:06,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:05:06,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:05:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:05:06,472 INFO L87 Difference]: Start difference. First operand 95620 states and 116139 transitions. Second operand has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:11,481 INFO L93 Difference]: Finished difference Result 148496 states and 181646 transitions. [2023-12-22 02:05:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:05:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-22 02:05:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:11,621 INFO L225 Difference]: With dead ends: 148496 [2023-12-22 02:05:11,621 INFO L226 Difference]: Without dead ends: 111702 [2023-12-22 02:05:11,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:05:11,657 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 13967 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13967 SdHoareTripleChecker+Valid, 9803 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:11,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13967 Valid, 9803 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:05:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111702 states. [2023-12-22 02:05:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111702 to 95620. [2023-12-22 02:05:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.210096425359242) internal successors, (115707), 95619 states have internal predecessors, (115707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 115707 transitions. [2023-12-22 02:05:15,536 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 115707 transitions. Word has length 179 [2023-12-22 02:05:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:15,536 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 115707 transitions. [2023-12-22 02:05:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.846153846153847) internal successors, (334), 25 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 115707 transitions. [2023-12-22 02:05:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-22 02:05:15,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:15,559 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:15,566 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 (36)] Forceful destruction successful, exit code 0 [2023-12-22 02:05:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 02:05:15,764 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:15,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1146002666, now seen corresponding path program 1 times [2023-12-22 02:05:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347596927] [2023-12-22 02:05:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:15,765 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 02:05:15,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:15,766 INFO L229 MonitoredProcess]: Starting monitored process 37 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 02:05:15,768 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 (37)] Waiting until timeout for monitored process [2023-12-22 02:05:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:15,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:05:15,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:17,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:05:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:18,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347596927] [2023-12-22 02:05:18,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347596927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:05:18,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:05:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:05:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277340947] [2023-12-22 02:05:18,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:05:18,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:05:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:05:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:05:18,176 INFO L87 Difference]: Start difference. First operand 95620 states and 115707 transitions. Second operand has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:23,262 INFO L93 Difference]: Finished difference Result 143816 states and 175066 transitions. [2023-12-22 02:05:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:05:23,262 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2023-12-22 02:05:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:23,407 INFO L225 Difference]: With dead ends: 143816 [2023-12-22 02:05:23,408 INFO L226 Difference]: Without dead ends: 108054 [2023-12-22 02:05:23,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:05:23,439 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 15325 mSDsluCounter, 6634 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15325 SdHoareTripleChecker+Valid, 8193 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:23,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15325 Valid, 8193 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:05:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108054 states. [2023-12-22 02:05:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108054 to 95620. [2023-12-22 02:05:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2054947813173251) internal successors, (115267), 95619 states have internal predecessors, (115267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 115267 transitions. [2023-12-22 02:05:27,778 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 115267 transitions. Word has length 180 [2023-12-22 02:05:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:27,778 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 115267 transitions. [2023-12-22 02:05:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 115267 transitions. [2023-12-22 02:05:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-22 02:05:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:27,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:27,798 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 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:05:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 02:05:27,999 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:27,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 762317412, now seen corresponding path program 1 times [2023-12-22 02:05:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208730624] [2023-12-22 02:05:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:28,000 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 02:05:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:28,001 INFO L229 MonitoredProcess]: Starting monitored process 38 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 02:05:28,003 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 (38)] Waiting until timeout for monitored process [2023-12-22 02:05:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:28,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:05:28,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 30 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:29,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:05:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 30 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:30,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208730624] [2023-12-22 02:05:30,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208730624] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:05:30,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:05:30,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:05:30,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393481995] [2023-12-22 02:05:30,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:05:30,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:05:30,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:05:30,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:05:30,307 INFO L87 Difference]: Start difference. First operand 95620 states and 115267 transitions. Second operand has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:35,359 INFO L93 Difference]: Finished difference Result 138896 states and 168174 transitions. [2023-12-22 02:05:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:05:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-22 02:05:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:35,510 INFO L225 Difference]: With dead ends: 138896 [2023-12-22 02:05:35,510 INFO L226 Difference]: Without dead ends: 104238 [2023-12-22 02:05:35,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:05:35,546 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 13944 mSDsluCounter, 8142 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13944 SdHoareTripleChecker+Valid, 9701 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:35,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13944 Valid, 9701 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 02:05:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104238 states. [2023-12-22 02:05:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104238 to 95620. [2023-12-22 02:05:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.2008513041477547) internal successors, (114823), 95619 states have internal predecessors, (114823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 114823 transitions. [2023-12-22 02:05:39,709 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 114823 transitions. Word has length 181 [2023-12-22 02:05:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:39,709 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 114823 transitions. [2023-12-22 02:05:39,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.307692307692308) internal successors, (346), 25 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 114823 transitions. [2023-12-22 02:05:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 02:05:39,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:39,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:39,731 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 02:05:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 02:05:39,927 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:39,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -357722182, now seen corresponding path program 1 times [2023-12-22 02:05:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:39,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625700707] [2023-12-22 02:05:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:39,928 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 02:05:39,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:39,929 INFO L229 MonitoredProcess]: Starting monitored process 39 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 02:05:39,930 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 (39)] Waiting until timeout for monitored process [2023-12-22 02:05:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:40,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:05:40,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:41,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:05:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:42,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625700707] [2023-12-22 02:05:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625700707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:05:42,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:05:42,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:05:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330161927] [2023-12-22 02:05:42,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:05:42,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:05:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:05:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:05:42,171 INFO L87 Difference]: Start difference. First operand 95620 states and 114823 transitions. Second operand has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:47,876 INFO L93 Difference]: Finished difference Result 133862 states and 161133 transitions. [2023-12-22 02:05:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:05:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-22 02:05:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:48,027 INFO L225 Difference]: With dead ends: 133862 [2023-12-22 02:05:48,028 INFO L226 Difference]: Without dead ends: 100338 [2023-12-22 02:05:48,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:05:48,056 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 18277 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18277 SdHoareTripleChecker+Valid, 9841 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:48,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18277 Valid, 9841 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:05:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100338 states. [2023-12-22 02:05:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100338 to 95620. [2023-12-22 02:05:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95620 states, 95618 states have (on average 1.1961869104143572) internal successors, (114377), 95619 states have internal predecessors, (114377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95620 states to 95620 states and 114377 transitions. [2023-12-22 02:05:52,284 INFO L78 Accepts]: Start accepts. Automaton has 95620 states and 114377 transitions. Word has length 182 [2023-12-22 02:05:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:52,284 INFO L495 AbstractCegarLoop]: Abstraction has 95620 states and 114377 transitions. [2023-12-22 02:05:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.538461538461538) internal successors, (352), 25 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 95620 states and 114377 transitions. [2023-12-22 02:05:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:05:52,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:52,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:52,307 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 (39)] Forceful destruction successful, exit code 0 [2023-12-22 02:05:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 02:05:52,505 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:52,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2005641560, now seen corresponding path program 1 times [2023-12-22 02:05:52,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:52,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866652928] [2023-12-22 02:05:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:52,506 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 02:05:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:52,507 INFO L229 MonitoredProcess]: Starting monitored process 40 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 02:05:52,511 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 (40)] Waiting until timeout for monitored process [2023-12-22 02:05:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:52,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:05:52,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:54,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:05:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:05:55,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866652928] [2023-12-22 02:05:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866652928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:05:55,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:05:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:05:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145465749] [2023-12-22 02:05:55,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:05:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:05:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:05:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:05:55,219 INFO L87 Difference]: Start difference. First operand 95620 states and 114377 transitions. Second operand has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:05,106 INFO L93 Difference]: Finished difference Result 147256 states and 175775 transitions. [2023-12-22 02:06:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:06:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:06:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:05,280 INFO L225 Difference]: With dead ends: 147256 [2023-12-22 02:06:05,280 INFO L226 Difference]: Without dead ends: 133302 [2023-12-22 02:06:05,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:06:05,312 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 3980 mSDsluCounter, 19353 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3980 SdHoareTripleChecker+Valid, 21026 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:05,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3980 Valid, 21026 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 02:06:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133302 states. [2023-12-22 02:06:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133302 to 69364. [2023-12-22 02:06:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69364 states, 69362 states have (on average 1.198235345001586) internal successors, (83112), 69363 states have internal predecessors, (83112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69364 states to 69364 states and 83112 transitions. [2023-12-22 02:06:09,469 INFO L78 Accepts]: Start accepts. Automaton has 69364 states and 83112 transitions. Word has length 183 [2023-12-22 02:06:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:09,469 INFO L495 AbstractCegarLoop]: Abstraction has 69364 states and 83112 transitions. [2023-12-22 02:06:09,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.653846153846153) internal successors, (355), 26 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 69364 states and 83112 transitions. [2023-12-22 02:06:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:06:09,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:09,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:06:09,481 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 (40)] Ended with exit code 0 [2023-12-22 02:06:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /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 02:06:09,679 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:09,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1650935988, now seen corresponding path program 1 times [2023-12-22 02:06:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214598167] [2023-12-22 02:06:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:09,680 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 02:06:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:09,681 INFO L229 MonitoredProcess]: Starting monitored process 41 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 02:06:09,682 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 (41)] Waiting until timeout for monitored process [2023-12-22 02:06:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:09,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:06:09,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:11,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:06:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:12,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214598167] [2023-12-22 02:06:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214598167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:06:12,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:06:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:06:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336299453] [2023-12-22 02:06:12,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:06:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:06:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:06:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:06:12,132 INFO L87 Difference]: Start difference. First operand 69364 states and 83112 transitions. Second operand has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:24,709 INFO L93 Difference]: Finished difference Result 168734 states and 200076 transitions. [2023-12-22 02:06:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 02:06:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:06:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:24,884 INFO L225 Difference]: With dead ends: 168734 [2023-12-22 02:06:24,885 INFO L226 Difference]: Without dead ends: 140100 [2023-12-22 02:06:24,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 02:06:24,926 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 2377 mSDsluCounter, 24246 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 25906 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 25906 Invalid, 2865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-22 02:06:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140100 states. [2023-12-22 02:06:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140100 to 79202. [2023-12-22 02:06:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79202 states, 79200 states have (on average 1.1927146464646465) internal successors, (94463), 79201 states have internal predecessors, (94463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79202 states to 79202 states and 94463 transitions. [2023-12-22 02:06:29,668 INFO L78 Accepts]: Start accepts. Automaton has 79202 states and 94463 transitions. Word has length 183 [2023-12-22 02:06:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:29,669 INFO L495 AbstractCegarLoop]: Abstraction has 79202 states and 94463 transitions. [2023-12-22 02:06:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 26 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 79202 states and 94463 transitions. [2023-12-22 02:06:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:06:29,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:29,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:06:29,683 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 (41)] Ended with exit code 0 [2023-12-22 02:06:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 02:06:29,881 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:29,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash -503443660, now seen corresponding path program 1 times [2023-12-22 02:06:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:29,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561794743] [2023-12-22 02:06:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:29,882 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 02:06:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:29,883 INFO L229 MonitoredProcess]: Starting monitored process 42 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 02:06:29,890 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 (42)] Waiting until timeout for monitored process [2023-12-22 02:06:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:30,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:06:30,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 31 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:31,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:06:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 31 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:32,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561794743] [2023-12-22 02:06:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561794743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:06:32,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:06:32,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:06:32,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368003029] [2023-12-22 02:06:32,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:06:32,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:06:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:06:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:06:32,504 INFO L87 Difference]: Start difference. First operand 79202 states and 94463 transitions. Second operand has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:44,603 INFO L93 Difference]: Finished difference Result 132723 states and 157983 transitions. [2023-12-22 02:06:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:06:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:06:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:44,740 INFO L225 Difference]: With dead ends: 132723 [2023-12-22 02:06:44,740 INFO L226 Difference]: Without dead ends: 117649 [2023-12-22 02:06:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:06:44,769 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 2428 mSDsluCounter, 27642 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 29325 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 29325 Invalid, 3300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-22 02:06:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117649 states. [2023-12-22 02:06:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117649 to 98659. [2023-12-22 02:06:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98659 states, 98657 states have (on average 1.190741660500522) internal successors, (117475), 98658 states have internal predecessors, (117475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98659 states to 98659 states and 117475 transitions. [2023-12-22 02:06:50,902 INFO L78 Accepts]: Start accepts. Automaton has 98659 states and 117475 transitions. Word has length 183 [2023-12-22 02:06:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 98659 states and 117475 transitions. [2023-12-22 02:06:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 98659 states and 117475 transitions. [2023-12-22 02:06:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:06:50,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:50,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:06:50,919 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 (42)] Ended with exit code 0 [2023-12-22 02:06:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 02:06:51,120 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:51,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash -5442856, now seen corresponding path program 1 times [2023-12-22 02:06:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849505917] [2023-12-22 02:06:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:51,121 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 02:06:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:51,122 INFO L229 MonitoredProcess]: Starting monitored process 43 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 02:06:51,124 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 (43)] Waiting until timeout for monitored process [2023-12-22 02:06:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:51,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:06:51,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:52,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:06:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:53,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849505917] [2023-12-22 02:06:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849505917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:06:53,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:06:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:06:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838150212] [2023-12-22 02:06:53,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:06:53,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:06:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:06:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:06:53,764 INFO L87 Difference]: Start difference. First operand 98659 states and 117475 transitions. Second operand has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:07:08,110 INFO L93 Difference]: Finished difference Result 171535 states and 203973 transitions. [2023-12-22 02:07:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:07:08,111 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:07:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:07:08,298 INFO L225 Difference]: With dead ends: 171535 [2023-12-22 02:07:08,299 INFO L226 Difference]: Without dead ends: 151117 [2023-12-22 02:07:08,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:07:08,336 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 5395 mSDsluCounter, 29397 mSDsCounter, 0 mSdLazyCounter, 3518 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5395 SdHoareTripleChecker+Valid, 31094 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:07:08,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5395 Valid, 31094 Invalid, 3534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3518 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-22 02:07:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151117 states. [2023-12-22 02:07:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151117 to 123178. [2023-12-22 02:07:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123178 states, 123176 states have (on average 1.1888679612911606) internal successors, (146440), 123177 states have internal predecessors, (146440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123178 states to 123178 states and 146440 transitions. [2023-12-22 02:07:15,790 INFO L78 Accepts]: Start accepts. Automaton has 123178 states and 146440 transitions. Word has length 183 [2023-12-22 02:07:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:07:15,791 INFO L495 AbstractCegarLoop]: Abstraction has 123178 states and 146440 transitions. [2023-12-22 02:07:15,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.26923076923077) internal successors, (345), 26 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 123178 states and 146440 transitions. [2023-12-22 02:07:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:07:15,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:07:15,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:07:15,806 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 (43)] Ended with exit code 0 [2023-12-22 02:07:16,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 02:07:16,008 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:07:16,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:07:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1297173068, now seen corresponding path program 1 times [2023-12-22 02:07:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:07:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109320110] [2023-12-22 02:07:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:07:16,009 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 02:07:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:07:16,017 INFO L229 MonitoredProcess]: Starting monitored process 44 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 02:07:16,020 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 (44)] Waiting until timeout for monitored process [2023-12-22 02:07:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:07:16,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:07:16,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:07:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:07:17,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:07:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:07:18,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:07:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109320110] [2023-12-22 02:07:18,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109320110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:07:18,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:07:18,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:07:18,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250415549] [2023-12-22 02:07:18,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:07:18,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:07:18,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:07:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:07:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:07:18,644 INFO L87 Difference]: Start difference. First operand 123178 states and 146440 transitions. Second operand has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:07:35,752 INFO L93 Difference]: Finished difference Result 219981 states and 261400 transitions. [2023-12-22 02:07:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:07:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:07:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:07:36,014 INFO L225 Difference]: With dead ends: 219981 [2023-12-22 02:07:36,014 INFO L226 Difference]: Without dead ends: 192315 [2023-12-22 02:07:36,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:07:36,067 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 3730 mSDsluCounter, 26507 mSDsCounter, 0 mSdLazyCounter, 3440 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3730 SdHoareTripleChecker+Valid, 28218 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-22 02:07:36,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3730 Valid, 28218 Invalid, 3456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3440 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-22 02:07:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192315 states. [2023-12-22 02:07:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192315 to 152976. [2023-12-22 02:07:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152976 states, 152974 states have (on average 1.1869925608273302) internal successors, (181579), 152975 states have internal predecessors, (181579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152976 states to 152976 states and 181579 transitions. [2023-12-22 02:07:45,784 INFO L78 Accepts]: Start accepts. Automaton has 152976 states and 181579 transitions. Word has length 183 [2023-12-22 02:07:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:07:45,784 INFO L495 AbstractCegarLoop]: Abstraction has 152976 states and 181579 transitions. [2023-12-22 02:07:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 26 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 152976 states and 181579 transitions. [2023-12-22 02:07:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:07:45,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:07:45,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:07:45,809 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 (44)] Ended with exit code 0 [2023-12-22 02:07:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /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 02:07:46,003 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:07:46,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:07:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1004559448, now seen corresponding path program 1 times [2023-12-22 02:07:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:07:46,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055871739] [2023-12-22 02:07:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:07:46,004 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 02:07:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:07:46,005 INFO L229 MonitoredProcess]: Starting monitored process 45 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 02:07:46,011 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 (45)] Waiting until timeout for monitored process [2023-12-22 02:07:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:07:46,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:07:46,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:07:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 58 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:07:47,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:07:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 58 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:07:48,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:07:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055871739] [2023-12-22 02:07:48,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055871739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:07:48,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:07:48,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:07:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857096059] [2023-12-22 02:07:48,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:07:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:07:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:07:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:07:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:07:48,488 INFO L87 Difference]: Start difference. First operand 152976 states and 181579 transitions. Second operand has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:08:07,326 INFO L93 Difference]: Finished difference Result 277583 states and 328683 transitions. [2023-12-22 02:08:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 02:08:07,327 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:08:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:08:07,675 INFO L225 Difference]: With dead ends: 277583 [2023-12-22 02:08:07,675 INFO L226 Difference]: Without dead ends: 240161 [2023-12-22 02:08:07,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-22 02:08:07,734 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 7000 mSDsluCounter, 24828 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7000 SdHoareTripleChecker+Valid, 26541 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:08:07,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7000 Valid, 26541 Invalid, 3235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 02:08:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240161 states. [2023-12-22 02:08:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240161 to 185549. [2023-12-22 02:08:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185549 states, 185547 states have (on average 1.1846917492602953) internal successors, (219816), 185548 states have internal predecessors, (219816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185549 states to 185549 states and 219816 transitions. [2023-12-22 02:08:19,431 INFO L78 Accepts]: Start accepts. Automaton has 185549 states and 219816 transitions. Word has length 183 [2023-12-22 02:08:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:08:19,431 INFO L495 AbstractCegarLoop]: Abstraction has 185549 states and 219816 transitions. [2023-12-22 02:08:19,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.884615384615385) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 185549 states and 219816 transitions. [2023-12-22 02:08:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:08:19,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:08:19,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:08:19,450 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 (45)] Forceful destruction successful, exit code 0 [2023-12-22 02:08:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /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 02:08:19,653 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:08:19,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:08:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash 631323700, now seen corresponding path program 1 times [2023-12-22 02:08:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:08:19,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183933739] [2023-12-22 02:08:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:08:19,654 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 02:08:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:08:19,655 INFO L229 MonitoredProcess]: Starting monitored process 46 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 02:08:19,656 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 (46)] Waiting until timeout for monitored process [2023-12-22 02:08:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:08:19,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:08:19,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:08:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:21,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:08:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:22,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:08:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183933739] [2023-12-22 02:08:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183933739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:08:22,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:08:22,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:08:22,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019469854] [2023-12-22 02:08:22,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:08:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:08:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:08:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:08:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:08:22,049 INFO L87 Difference]: Start difference. First operand 185549 states and 219816 transitions. Second operand has 26 states, 26 states have (on average 12.692307692307692) internal successors, (330), 26 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)