/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.6.ufo.BOUNDED-12.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 01:25:11,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 01:25:11,374 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 01:25:11,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 01:25:11,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 01:25:11,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 01:25:11,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 01:25:11,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 01:25:11,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 01:25:11,404 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 01:25:11,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 01:25:11,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 01:25:11,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 01:25:11,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 01:25:11,406 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 01:25:11,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 01:25:11,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 01:25:11,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 01:25:11,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 01:25:11,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 01:25:11,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 01:25:11,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 01:25:11,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 01:25:11,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 01:25:11,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 01:25:11,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 01:25:11,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 01:25:11,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 01:25:11,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 01:25:11,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:25:11,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 01:25:11,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 01:25:11,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 01:25:11,412 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 01:25:11,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 01:25:11,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 01:25:11,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 01:25:11,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 01:25:11,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 01:25:11,611 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 01:25:11,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2023-12-22 01:25:12,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 01:25:13,069 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 01:25:13,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2023-12-22 01:25:13,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cebdb64b/da74ca6be21b4ccca4f4aca7afc25033/FLAG6384a990a [2023-12-22 01:25:13,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cebdb64b/da74ca6be21b4ccca4f4aca7afc25033 [2023-12-22 01:25:13,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 01:25:13,124 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 01:25:13,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 01:25:13,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 01:25:13,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 01:25:13,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:25:13" (1/1) ... [2023-12-22 01:25:13,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295a13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:13, skipping insertion in model container [2023-12-22 01:25:13,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:25:13" (1/1) ... [2023-12-22 01:25:13,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 01:25:13,487 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2023-12-22 01:25:13,522 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2023-12-22 01:25:14,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:25:14,065 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 01:25:14,104 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2023-12-22 01:25:14,113 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2023-12-22 01:25:14,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:25:14,436 INFO L206 MainTranslator]: Completed translation [2023-12-22 01:25:14,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14 WrapperNode [2023-12-22 01:25:14,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 01:25:14,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 01:25:14,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 01:25:14,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 01:25:14,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,610 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5125 [2023-12-22 01:25:14,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 01:25:14,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 01:25:14,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 01:25:14,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 01:25:14,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,721 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 01:25:14,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 01:25:14,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 01:25:14,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 01:25:14,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 01:25:14,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (1/1) ... [2023-12-22 01:25:14,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:25:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 01:25:14,961 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 01:25:14,972 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 01:25:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 01:25:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 01:25:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 01:25:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 01:25:15,149 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 01:25:15,155 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 01:25:40,504 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 01:25:40,576 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 01:25:40,576 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 01:25:40,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:25:40 BoogieIcfgContainer [2023-12-22 01:25:40,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 01:25:40,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 01:25:40,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 01:25:40,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 01:25:40,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:25:13" (1/3) ... [2023-12-22 01:25:40,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b985f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:25:40, skipping insertion in model container [2023-12-22 01:25:40,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:25:14" (2/3) ... [2023-12-22 01:25:40,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b985f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:25:40, skipping insertion in model container [2023-12-22 01:25:40,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:25:40" (3/3) ... [2023-12-22 01:25:40,584 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2023-12-22 01:25:40,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 01:25:40,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 01:25:40,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 01:25:40,679 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;@28a5b65e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 01:25:40,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 01:25:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 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 01:25:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 01:25:40,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:25:40,694 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] [2023-12-22 01:25:40,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:25:40,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:25:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-12-22 01:25:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:25:40,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836283665] [2023-12-22 01:25:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:25:40,707 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 01:25:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:25:40,709 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 01:25:40,710 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 01:25:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:25:40,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 01:25:40,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:25:40,815 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 01:25:40,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:25:40,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:25:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836283665] [2023-12-22 01:25:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836283665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:25:40,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:25:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:25:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188573969] [2023-12-22 01:25:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:25:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 01:25:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:25:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 01:25:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:25:40,849 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 01:25:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:25:41,034 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-22 01:25:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 01:25:41,036 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-22 01:25:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:25:41,054 INFO L225 Difference]: With dead ends: 1654 [2023-12-22 01:25:41,054 INFO L226 Difference]: Without dead ends: 845 [2023-12-22 01:25:41,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 01:25:41,061 INFO L413 NwaCegarLoop]: 1599 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, 1599 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 01:25:41,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:25:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-22 01:25:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-22 01:25:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 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 01:25:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-22 01:25:41,140 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-22 01:25:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:25:41,140 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-22 01:25:41,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 01:25:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-22 01:25:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 01:25:41,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:25:41,141 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] [2023-12-22 01:25:41,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 01:25:41,345 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 01:25:41,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:25:41,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:25:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-12-22 01:25:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:25:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151634420] [2023-12-22 01:25:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:25:41,350 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 01:25:41,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:25:41,352 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 01:25:41,353 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 01:25:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:25:41,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:25:41,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:25:41,494 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 01:25:41,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:25:41,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:25:41,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151634420] [2023-12-22 01:25:41,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151634420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:25:41,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:25:41,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:25:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253469811] [2023-12-22 01:25:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:25:41,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:25:41,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:25:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:25:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:25:41,501 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 01:25:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:25:41,599 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-22 01:25:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:25:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-22 01:25:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:25:41,605 INFO L225 Difference]: With dead ends: 895 [2023-12-22 01:25:41,606 INFO L226 Difference]: Without dead ends: 845 [2023-12-22 01:25:41,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 01:25:41,607 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:25:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:25:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-22 01:25:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-22 01:25:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 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 01:25:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-22 01:25:41,632 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-22 01:25:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:25:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-22 01:25:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 01:25:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-22 01:25:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-22 01:25:41,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:25:41,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:25:41,659 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 01:25:41,845 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 01:25:41,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:25:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:25:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-12-22 01:25:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:25:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018434803] [2023-12-22 01:25:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:25:41,847 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 01:25:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:25:41,848 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 01:25:41,868 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 01:25:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:25:41,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:25:41,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:25:42,780 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 01:25:42,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:25:42,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:25:42,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018434803] [2023-12-22 01:25:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018434803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:25:42,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:25:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:25:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057201441] [2023-12-22 01:25:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:25:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:25:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:25:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:25:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:25:42,782 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:25:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:25:43,068 INFO L93 Difference]: Finished difference Result 1174 states and 2091 transitions. [2023-12-22 01:25:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:25:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-22 01:25:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:25:43,074 INFO L225 Difference]: With dead ends: 1174 [2023-12-22 01:25:43,074 INFO L226 Difference]: Without dead ends: 1127 [2023-12-22 01:25:43,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:25:43,077 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 3420 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:25:43,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3420 Valid, 2238 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:25:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2023-12-22 01:25:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 935. [2023-12-22 01:25:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 933 states have (on average 1.8285101822079315) internal successors, (1706), 934 states have internal predecessors, (1706), 0 states have call successors, (0), 0 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 01:25:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1706 transitions. [2023-12-22 01:25:43,096 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1706 transitions. Word has length 62 [2023-12-22 01:25:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:25:43,097 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1706 transitions. [2023-12-22 01:25:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:25:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1706 transitions. [2023-12-22 01:25:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-22 01:25:43,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:25:43,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:25:43,120 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 01:25:43,303 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 01:25:43,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:25:43,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:25:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -382311835, now seen corresponding path program 1 times [2023-12-22 01:25:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:25:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304599314] [2023-12-22 01:25:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:25:43,307 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 01:25:43,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:25:43,308 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 01:25:43,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 01:25:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:25:43,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:25:43,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:25:43,485 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 01:25:43,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:25:43,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:25:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304599314] [2023-12-22 01:25:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304599314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:25:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:25:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:25:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470155345] [2023-12-22 01:25:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:25:43,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:25:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:25:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:25:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:25:43,487 INFO L87 Difference]: Start difference. First operand 935 states and 1706 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:20,152 INFO L93 Difference]: Finished difference Result 2439 states and 4579 transitions. [2023-12-22 01:26:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-22 01:26:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:20,158 INFO L225 Difference]: With dead ends: 2439 [2023-12-22 01:26:20,158 INFO L226 Difference]: Without dead ends: 1686 [2023-12-22 01:26:20,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:20,160 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 854 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:20,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 664 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 36.5s Time] [2023-12-22 01:26:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-12-22 01:26:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1686. [2023-12-22 01:26:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1684 states have (on average 1.5516627078384797) internal successors, (2613), 1685 states have internal predecessors, (2613), 0 states have call successors, (0), 0 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 01:26:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2613 transitions. [2023-12-22 01:26:20,187 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2613 transitions. Word has length 62 [2023-12-22 01:26:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:20,187 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2613 transitions. [2023-12-22 01:26:20,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2613 transitions. [2023-12-22 01:26:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-22 01:26:20,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:20,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:20,200 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 01:26:20,391 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 01:26:20,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:20,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-12-22 01:26:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702817079] [2023-12-22 01:26:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:20,392 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 01:26:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:20,393 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 01:26:20,395 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 01:26:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:20,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:20,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:20,540 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 01:26:20,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:20,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702817079] [2023-12-22 01:26:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702817079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:20,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31818078] [2023-12-22 01:26:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:20,542 INFO L87 Difference]: Start difference. First operand 1686 states and 2613 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:20,593 INFO L93 Difference]: Finished difference Result 1944 states and 3031 transitions. [2023-12-22 01:26:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:20,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-22 01:26:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:20,606 INFO L225 Difference]: With dead ends: 1944 [2023-12-22 01:26:20,606 INFO L226 Difference]: Without dead ends: 1807 [2023-12-22 01:26:20,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 01:26:20,607 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1625 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 01:26:20,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1625 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2023-12-22 01:26:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1805. [2023-12-22 01:26:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1803 states have (on average 1.5540765391014975) internal successors, (2802), 1804 states have internal predecessors, (2802), 0 states have call successors, (0), 0 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 01:26:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2802 transitions. [2023-12-22 01:26:20,639 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2802 transitions. Word has length 64 [2023-12-22 01:26:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 1805 states and 2802 transitions. [2023-12-22 01:26:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2802 transitions. [2023-12-22 01:26:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-22 01:26:20,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:20,640 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] [2023-12-22 01:26:20,644 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 01:26:20,844 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 01:26:20,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:20,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-12-22 01:26:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678564534] [2023-12-22 01:26:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:20,845 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 01:26:20,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:20,846 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 01:26:20,874 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 01:26:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:20,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:26:20,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:20,939 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 01:26:20,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:20,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678564534] [2023-12-22 01:26:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678564534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:20,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:20,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:26:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872325131] [2023-12-22 01:26:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:26:20,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:20,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:26:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:26:20,940 INFO L87 Difference]: Start difference. First operand 1805 states and 2802 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 01:26:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:20,999 INFO L93 Difference]: Finished difference Result 1819 states and 2819 transitions. [2023-12-22 01:26:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:26:21,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-22 01:26:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:21,006 INFO L225 Difference]: With dead ends: 1819 [2023-12-22 01:26:21,006 INFO L226 Difference]: Without dead ends: 1817 [2023-12-22 01:26:21,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 01:26:21,008 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:21,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-12-22 01:26:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1813. [2023-12-22 01:26:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1811 states have (on average 1.5510767531750413) internal successors, (2809), 1812 states have internal predecessors, (2809), 0 states have call successors, (0), 0 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 01:26:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2809 transitions. [2023-12-22 01:26:21,036 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2809 transitions. Word has length 65 [2023-12-22 01:26:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:21,036 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 2809 transitions. [2023-12-22 01:26:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 01:26:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2809 transitions. [2023-12-22 01:26:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:21,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:21,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:21,041 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 01:26:21,240 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 01:26:21,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:21,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-12-22 01:26:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016427191] [2023-12-22 01:26:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:21,242 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 01:26:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:21,265 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 01:26:21,295 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 01:26:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:21,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:21,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:21,402 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 01:26:21,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:21,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016427191] [2023-12-22 01:26:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016427191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107675196] [2023-12-22 01:26:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:21,404 INFO L87 Difference]: Start difference. First operand 1813 states and 2809 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:21,432 INFO L93 Difference]: Finished difference Result 2089 states and 3249 transitions. [2023-12-22 01:26:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:21,437 INFO L225 Difference]: With dead ends: 2089 [2023-12-22 01:26:21,437 INFO L226 Difference]: Without dead ends: 1946 [2023-12-22 01:26:21,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:21,438 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 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 01:26:21,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2023-12-22 01:26:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1944. [2023-12-22 01:26:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1942 states have (on average 1.5525231719876416) internal successors, (3015), 1943 states have internal predecessors, (3015), 0 states have call successors, (0), 0 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 01:26:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 3015 transitions. [2023-12-22 01:26:21,461 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 3015 transitions. Word has length 66 [2023-12-22 01:26:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:21,462 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 3015 transitions. [2023-12-22 01:26:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 3015 transitions. [2023-12-22 01:26:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:21,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:21,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:21,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:21,665 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 01:26:21,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:21,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-12-22 01:26:21,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:21,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003976112] [2023-12-22 01:26:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:21,668 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 01:26:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:21,669 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 01:26:21,671 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 01:26:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:21,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:21,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:21,803 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 01:26:21,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:21,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003976112] [2023-12-22 01:26:21,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003976112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:21,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407293569] [2023-12-22 01:26:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:21,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:21,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:21,808 INFO L87 Difference]: Start difference. First operand 1944 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:21,908 INFO L93 Difference]: Finished difference Result 2694 states and 4198 transitions. [2023-12-22 01:26:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:21,914 INFO L225 Difference]: With dead ends: 2694 [2023-12-22 01:26:21,914 INFO L226 Difference]: Without dead ends: 2301 [2023-12-22 01:26:21,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:21,916 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 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 01:26:21,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-22 01:26:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2299. [2023-12-22 01:26:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2297 states have (on average 1.5520243796255986) internal successors, (3565), 2298 states have internal predecessors, (3565), 0 states have call successors, (0), 0 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 01:26:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3565 transitions. [2023-12-22 01:26:21,947 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3565 transitions. Word has length 66 [2023-12-22 01:26:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:21,947 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3565 transitions. [2023-12-22 01:26:21,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3565 transitions. [2023-12-22 01:26:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:21,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:21,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:21,953 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 01:26:22,152 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 01:26:22,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:22,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-12-22 01:26:22,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364065702] [2023-12-22 01:26:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:22,154 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 01:26:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:22,155 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 01:26:22,185 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 01:26:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:22,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:22,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:22,276 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 01:26:22,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:22,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364065702] [2023-12-22 01:26:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364065702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:22,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656452382] [2023-12-22 01:26:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:22,277 INFO L87 Difference]: Start difference. First operand 2299 states and 3565 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:22,316 INFO L93 Difference]: Finished difference Result 3723 states and 5785 transitions. [2023-12-22 01:26:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:22,324 INFO L225 Difference]: With dead ends: 3723 [2023-12-22 01:26:22,324 INFO L226 Difference]: Without dead ends: 2975 [2023-12-22 01:26:22,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:22,325 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 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 01:26:22,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-12-22 01:26:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2973. [2023-12-22 01:26:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2971 states have (on average 1.5459441265567149) internal successors, (4593), 2972 states have internal predecessors, (4593), 0 states have call successors, (0), 0 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 01:26:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 4593 transitions. [2023-12-22 01:26:22,366 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 4593 transitions. Word has length 66 [2023-12-22 01:26:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:22,366 INFO L495 AbstractCegarLoop]: Abstraction has 2973 states and 4593 transitions. [2023-12-22 01:26:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 4593 transitions. [2023-12-22 01:26:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:22,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:22,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:22,373 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 01:26:22,573 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 01:26:22,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:22,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-12-22 01:26:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930834680] [2023-12-22 01:26:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:22,574 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 01:26:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:22,575 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 01:26:22,594 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 01:26:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:22,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:22,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:22,725 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 01:26:22,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:22,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930834680] [2023-12-22 01:26:22,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930834680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:22,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:22,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:22,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479586532] [2023-12-22 01:26:22,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:22,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:22,727 INFO L87 Difference]: Start difference. First operand 2973 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:22,768 INFO L93 Difference]: Finished difference Result 5673 states and 8743 transitions. [2023-12-22 01:26:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:22,780 INFO L225 Difference]: With dead ends: 5673 [2023-12-22 01:26:22,780 INFO L226 Difference]: Without dead ends: 4251 [2023-12-22 01:26:22,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:22,783 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 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 01:26:22,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2023-12-22 01:26:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4249. [2023-12-22 01:26:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4247 states have (on average 1.531669413703791) internal successors, (6505), 4248 states have internal predecessors, (6505), 0 states have call successors, (0), 0 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 01:26:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6505 transitions. [2023-12-22 01:26:22,847 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6505 transitions. Word has length 66 [2023-12-22 01:26:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:22,847 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 6505 transitions. [2023-12-22 01:26:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6505 transitions. [2023-12-22 01:26:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:22,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:22,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:22,861 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 01:26:23,052 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 01:26:23,052 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:23,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-12-22 01:26:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358793032] [2023-12-22 01:26:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:23,053 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 01:26:23,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:23,055 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 01:26:23,059 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 01:26:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:23,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:23,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:23,197 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 01:26:23,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:23,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358793032] [2023-12-22 01:26:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358793032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163433007] [2023-12-22 01:26:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:23,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:23,199 INFO L87 Difference]: Start difference. First operand 4249 states and 6505 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:23,256 INFO L93 Difference]: Finished difference Result 9357 states and 14227 transitions. [2023-12-22 01:26:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:23,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:23,284 INFO L225 Difference]: With dead ends: 9357 [2023-12-22 01:26:23,284 INFO L226 Difference]: Without dead ends: 6659 [2023-12-22 01:26:23,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:23,289 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 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 01:26:23,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6659 states. [2023-12-22 01:26:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6659 to 6657. [2023-12-22 01:26:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6655 states have (on average 1.5087903831705485) internal successors, (10041), 6656 states have internal predecessors, (10041), 0 states have call successors, (0), 0 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 01:26:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 10041 transitions. [2023-12-22 01:26:23,459 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 10041 transitions. Word has length 66 [2023-12-22 01:26:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:23,459 INFO L495 AbstractCegarLoop]: Abstraction has 6657 states and 10041 transitions. [2023-12-22 01:26:23,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 10041 transitions. [2023-12-22 01:26:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:26:23,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:23,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:23,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:23,663 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 01:26:23,664 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:23,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-12-22 01:26:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:23,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815744872] [2023-12-22 01:26:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:23,665 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 01:26:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:23,666 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 01:26:23,668 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 01:26:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:23,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:23,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:23,799 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 01:26:23,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:23,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815744872] [2023-12-22 01:26:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815744872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839294552] [2023-12-22 01:26:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:23,801 INFO L87 Difference]: Start difference. First operand 6657 states and 10041 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:23,934 INFO L93 Difference]: Finished difference Result 16293 states and 24331 transitions. [2023-12-22 01:26:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-22 01:26:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:23,951 INFO L225 Difference]: With dead ends: 16293 [2023-12-22 01:26:23,952 INFO L226 Difference]: Without dead ends: 11187 [2023-12-22 01:26:23,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 01:26:23,960 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 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 01:26:23,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11187 states. [2023-12-22 01:26:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11187 to 11185. [2023-12-22 01:26:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11185 states, 11183 states have (on average 1.4787624072252525) internal successors, (16537), 11184 states have internal predecessors, (16537), 0 states have call successors, (0), 0 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 01:26:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11185 states to 11185 states and 16537 transitions. [2023-12-22 01:26:24,125 INFO L78 Accepts]: Start accepts. Automaton has 11185 states and 16537 transitions. Word has length 66 [2023-12-22 01:26:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 11185 states and 16537 transitions. [2023-12-22 01:26:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11185 states and 16537 transitions. [2023-12-22 01:26:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 01:26:24,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:24,128 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] [2023-12-22 01:26:24,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 01:26:24,331 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 01:26:24,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:24,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-12-22 01:26:24,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:24,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223793932] [2023-12-22 01:26:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:24,332 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 01:26:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:24,334 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 01:26:24,336 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 (14)] Waiting until timeout for monitored process [2023-12-22 01:26:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:24,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:24,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:25,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:25,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223793932] [2023-12-22 01:26:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223793932] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:25,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:25,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:25,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348605921] [2023-12-22 01:26:25,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:25,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:25,670 INFO L87 Difference]: Start difference. First operand 11185 states and 16537 transitions. Second operand has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 01:26:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:27,970 INFO L93 Difference]: Finished difference Result 32347 states and 47294 transitions. [2023-12-22 01:26:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:26:27,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 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 86 [2023-12-22 01:26:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:28,012 INFO L225 Difference]: With dead ends: 32347 [2023-12-22 01:26:28,012 INFO L226 Difference]: Without dead ends: 25625 [2023-12-22 01:26:28,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 01:26:28,025 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 3553 mSDsluCounter, 12532 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 14098 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:28,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 14098 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 01:26:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25625 states. [2023-12-22 01:26:28,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25625 to 20817. [2023-12-22 01:26:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 20815 states have (on average 1.4693730482824885) internal successors, (30585), 20816 states have internal predecessors, (30585), 0 states have call successors, (0), 0 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 01:26:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 30585 transitions. [2023-12-22 01:26:28,439 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 30585 transitions. Word has length 86 [2023-12-22 01:26:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 20817 states and 30585 transitions. [2023-12-22 01:26:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 01:26:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 30585 transitions. [2023-12-22 01:26:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 01:26:28,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:28,442 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] [2023-12-22 01:26:28,445 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 01:26:28,645 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 01:26:28,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-12-22 01:26:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507143862] [2023-12-22 01:26:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:28,646 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 01:26:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:28,648 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 01:26:28,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 01:26:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:28,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:28,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:28,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:28,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507143862] [2023-12-22 01:26:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507143862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:28,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:28,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240177477] [2023-12-22 01:26:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:28,787 INFO L87 Difference]: Start difference. First operand 20817 states and 30585 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 01:26:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:29,055 INFO L93 Difference]: Finished difference Result 34281 states and 50480 transitions. [2023-12-22 01:26:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:29,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-22 01:26:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:29,078 INFO L225 Difference]: With dead ends: 34281 [2023-12-22 01:26:29,078 INFO L226 Difference]: Without dead ends: 15015 [2023-12-22 01:26:29,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 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 01:26:29,094 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 55 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3149 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 01:26:29,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15015 states. [2023-12-22 01:26:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15015 to 15008. [2023-12-22 01:26:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15008 states, 15006 states have (on average 1.4719445555111288) internal successors, (22088), 15007 states have internal predecessors, (22088), 0 states have call successors, (0), 0 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 01:26:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15008 states to 15008 states and 22088 transitions. [2023-12-22 01:26:29,445 INFO L78 Accepts]: Start accepts. Automaton has 15008 states and 22088 transitions. Word has length 86 [2023-12-22 01:26:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:29,446 INFO L495 AbstractCegarLoop]: Abstraction has 15008 states and 22088 transitions. [2023-12-22 01:26:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 01:26:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 15008 states and 22088 transitions. [2023-12-22 01:26:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-22 01:26:29,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:29,447 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] [2023-12-22 01:26:29,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:29,651 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 01:26:29,651 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash -922338825, now seen corresponding path program 1 times [2023-12-22 01:26:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:29,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864404219] [2023-12-22 01:26:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:29,652 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 01:26:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:29,653 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 01:26:29,654 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 01:26:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:29,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:29,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:29,807 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 01:26:29,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:29,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864404219] [2023-12-22 01:26:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864404219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:29,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001529456] [2023-12-22 01:26:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:29,809 INFO L87 Difference]: Start difference. First operand 15008 states and 22088 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:29,922 INFO L93 Difference]: Finished difference Result 21732 states and 31930 transitions. [2023-12-22 01:26:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:29,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-22 01:26:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:29,932 INFO L225 Difference]: With dead ends: 21732 [2023-12-22 01:26:29,932 INFO L226 Difference]: Without dead ends: 8290 [2023-12-22 01:26:29,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 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 01:26:29,945 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 51 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3134 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 01:26:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3134 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2023-12-22 01:26:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 8288. [2023-12-22 01:26:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8288 states, 8286 states have (on average 1.4665701182717836) internal successors, (12152), 8287 states have internal predecessors, (12152), 0 states have call successors, (0), 0 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 01:26:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8288 states to 8288 states and 12152 transitions. [2023-12-22 01:26:30,082 INFO L78 Accepts]: Start accepts. Automaton has 8288 states and 12152 transitions. Word has length 88 [2023-12-22 01:26:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:30,082 INFO L495 AbstractCegarLoop]: Abstraction has 8288 states and 12152 transitions. [2023-12-22 01:26:30,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:26:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 8288 states and 12152 transitions. [2023-12-22 01:26:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-22 01:26:30,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:30,084 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] [2023-12-22 01:26:30,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:30,287 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 01:26:30,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:30,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1995928241, now seen corresponding path program 1 times [2023-12-22 01:26:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25275976] [2023-12-22 01:26:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:30,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:26:30,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:30,290 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 01:26:30,321 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 01:26:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:30,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:30,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:31,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:31,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:31,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25275976] [2023-12-22 01:26:31,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25275976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:31,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:31,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926229073] [2023-12-22 01:26:31,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:31,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:31,365 INFO L87 Difference]: Start difference. First operand 8288 states and 12152 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 01:26:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:33,380 INFO L93 Difference]: Finished difference Result 27400 states and 39612 transitions. [2023-12-22 01:26:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:26:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 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 89 [2023-12-22 01:26:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:33,398 INFO L225 Difference]: With dead ends: 27400 [2023-12-22 01:26:33,399 INFO L226 Difference]: Without dead ends: 20678 [2023-12-22 01:26:33,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 162 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 01:26:33,404 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 5098 mSDsluCounter, 15616 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 17236 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:33,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 17236 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 01:26:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20678 states. [2023-12-22 01:26:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20678 to 15584. [2023-12-22 01:26:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15584 states, 15582 states have (on average 1.4360159158002823) internal successors, (22376), 15583 states have internal predecessors, (22376), 0 states have call successors, (0), 0 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 01:26:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 22376 transitions. [2023-12-22 01:26:33,752 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 22376 transitions. Word has length 89 [2023-12-22 01:26:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:33,753 INFO L495 AbstractCegarLoop]: Abstraction has 15584 states and 22376 transitions. [2023-12-22 01:26:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 01:26:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 22376 transitions. [2023-12-22 01:26:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 01:26:33,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:33,754 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] [2023-12-22 01:26:33,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-22 01:26:33,958 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 01:26:33,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:33,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1259536057, now seen corresponding path program 1 times [2023-12-22 01:26:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:33,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271371690] [2023-12-22 01:26:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:33,959 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 01:26:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:33,960 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 01:26:33,962 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 01:26:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:34,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:34,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:34,098 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 01:26:34,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:34,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271371690] [2023-12-22 01:26:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271371690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:34,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:34,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868366905] [2023-12-22 01:26:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:34,099 INFO L87 Difference]: Start difference. First operand 15584 states and 22376 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 01:26:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:34,222 INFO L93 Difference]: Finished difference Result 22596 states and 32362 transitions. [2023-12-22 01:26:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:34,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-22 01:26:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:34,230 INFO L225 Difference]: With dead ends: 22596 [2023-12-22 01:26:34,231 INFO L226 Difference]: Without dead ends: 8578 [2023-12-22 01:26:34,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 01:26:34,240 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 47 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3119 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 01:26:34,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8578 states. [2023-12-22 01:26:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8578 to 8576. [2023-12-22 01:26:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8576 states, 8574 states have (on average 1.4341031024026125) internal successors, (12296), 8575 states have internal predecessors, (12296), 0 states have call successors, (0), 0 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 01:26:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8576 states to 8576 states and 12296 transitions. [2023-12-22 01:26:34,419 INFO L78 Accepts]: Start accepts. Automaton has 8576 states and 12296 transitions. Word has length 91 [2023-12-22 01:26:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:34,419 INFO L495 AbstractCegarLoop]: Abstraction has 8576 states and 12296 transitions. [2023-12-22 01:26:34,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 01:26:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8576 states and 12296 transitions. [2023-12-22 01:26:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-22 01:26:34,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:34,421 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] [2023-12-22 01:26:34,440 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 01:26:34,624 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 01:26:34,625 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:34,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:34,625 INFO L85 PathProgramCache]: Analyzing trace with hash 645989679, now seen corresponding path program 1 times [2023-12-22 01:26:34,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:34,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23964934] [2023-12-22 01:26:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:34,626 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 01:26:34,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:34,627 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 01:26:34,657 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 01:26:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:34,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:34,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:35,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:35,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23964934] [2023-12-22 01:26:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23964934] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:35,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073169974] [2023-12-22 01:26:35,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:35,902 INFO L87 Difference]: Start difference. First operand 8576 states and 12296 transitions. Second operand has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 01:26:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:37,997 INFO L93 Difference]: Finished difference Result 27688 states and 39084 transitions. [2023-12-22 01:26:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:26:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 0 states have call successors, (0), 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 92 [2023-12-22 01:26:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:38,018 INFO L225 Difference]: With dead ends: 27688 [2023-12-22 01:26:38,018 INFO L226 Difference]: Without dead ends: 20678 [2023-12-22 01:26:38,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 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 01:26:38,025 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 2177 mSDsluCounter, 12537 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 14139 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:38,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 14139 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 01:26:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20678 states. [2023-12-22 01:26:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20678 to 16160. [2023-12-22 01:26:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16160 states, 16158 states have (on average 1.4026488426785493) internal successors, (22664), 16159 states have internal predecessors, (22664), 0 states have call successors, (0), 0 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 01:26:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16160 states to 16160 states and 22664 transitions. [2023-12-22 01:26:38,493 INFO L78 Accepts]: Start accepts. Automaton has 16160 states and 22664 transitions. Word has length 92 [2023-12-22 01:26:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:38,493 INFO L495 AbstractCegarLoop]: Abstraction has 16160 states and 22664 transitions. [2023-12-22 01:26:38,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.75) internal successors, (172), 16 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 01:26:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16160 states and 22664 transitions. [2023-12-22 01:26:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-22 01:26:38,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:38,495 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] [2023-12-22 01:26:38,508 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 01:26:38,699 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 01:26:38,699 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:38,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1912047101, now seen corresponding path program 1 times [2023-12-22 01:26:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125609123] [2023-12-22 01:26:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:38,700 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 01:26:38,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:38,701 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 01:26:38,702 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 01:26:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:38,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:38,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:38,841 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 01:26:38,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:38,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125609123] [2023-12-22 01:26:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125609123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587926309] [2023-12-22 01:26:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:38,843 INFO L87 Difference]: Start difference. First operand 16160 states and 22664 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 01:26:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:39,056 INFO L93 Difference]: Finished difference Result 23460 states and 32794 transitions. [2023-12-22 01:26:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-22 01:26:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:39,066 INFO L225 Difference]: With dead ends: 23460 [2023-12-22 01:26:39,066 INFO L226 Difference]: Without dead ends: 8866 [2023-12-22 01:26:39,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 01:26:39,074 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 43 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3104 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 01:26:39,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-12-22 01:26:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8864. [2023-12-22 01:26:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8862 states have (on average 1.4037463326562853) internal successors, (12440), 8863 states have internal predecessors, (12440), 0 states have call successors, (0), 0 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 01:26:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 12440 transitions. [2023-12-22 01:26:39,234 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 12440 transitions. Word has length 94 [2023-12-22 01:26:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:39,234 INFO L495 AbstractCegarLoop]: Abstraction has 8864 states and 12440 transitions. [2023-12-22 01:26:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 01:26:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 12440 transitions. [2023-12-22 01:26:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-22 01:26:39,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:39,236 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] [2023-12-22 01:26:39,239 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 (20)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:39,439 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 01:26:39,439 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:39,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1151103525, now seen corresponding path program 1 times [2023-12-22 01:26:39,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:39,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915085075] [2023-12-22 01:26:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:39,440 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 01:26:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:39,441 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 01:26:39,442 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 01:26:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:39,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:39,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:40,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:40,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915085075] [2023-12-22 01:26:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915085075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:40,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:40,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522492931] [2023-12-22 01:26:40,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:40,583 INFO L87 Difference]: Start difference. First operand 8864 states and 12440 transitions. Second operand has 16 states, 16 states have (on average 11.25) internal successors, (180), 16 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 01:26:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:42,265 INFO L93 Difference]: Finished difference Result 27976 states and 38556 transitions. [2023-12-22 01:26:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:26:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.25) internal successors, (180), 16 states have internal predecessors, (180), 0 states have call successors, (0), 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 95 [2023-12-22 01:26:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:42,288 INFO L225 Difference]: With dead ends: 27976 [2023-12-22 01:26:42,288 INFO L226 Difference]: Without dead ends: 20678 [2023-12-22 01:26:42,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 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 01:26:42,299 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 3522 mSDsluCounter, 10913 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3522 SdHoareTripleChecker+Valid, 12497 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:42,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3522 Valid, 12497 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:26:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20678 states. [2023-12-22 01:26:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20678 to 16736. [2023-12-22 01:26:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16736 states, 16734 states have (on average 1.371578821560894) internal successors, (22952), 16735 states have internal predecessors, (22952), 0 states have call successors, (0), 0 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 01:26:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16736 states to 16736 states and 22952 transitions. [2023-12-22 01:26:42,752 INFO L78 Accepts]: Start accepts. Automaton has 16736 states and 22952 transitions. Word has length 95 [2023-12-22 01:26:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:42,752 INFO L495 AbstractCegarLoop]: Abstraction has 16736 states and 22952 transitions. [2023-12-22 01:26:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.25) internal successors, (180), 16 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 01:26:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16736 states and 22952 transitions. [2023-12-22 01:26:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-22 01:26:42,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:42,754 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] [2023-12-22 01:26:42,760 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 01:26:42,957 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 01:26:42,957 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -616385339, now seen corresponding path program 1 times [2023-12-22 01:26:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634665782] [2023-12-22 01:26:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:42,958 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 01:26:42,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:42,960 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 01:26:42,983 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 01:26:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:43,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:43,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:43,102 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 01:26:43,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:43,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634665782] [2023-12-22 01:26:43,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634665782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:43,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:43,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:43,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093490282] [2023-12-22 01:26:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:43,104 INFO L87 Difference]: Start difference. First operand 16736 states and 22952 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 01:26:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:43,313 INFO L93 Difference]: Finished difference Result 24324 states and 33226 transitions. [2023-12-22 01:26:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-22 01:26:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:43,322 INFO L225 Difference]: With dead ends: 24324 [2023-12-22 01:26:43,323 INFO L226 Difference]: Without dead ends: 9154 [2023-12-22 01:26:43,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 01:26:43,333 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 39 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3089 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 01:26:43,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9154 states. [2023-12-22 01:26:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9154 to 9152. [2023-12-22 01:26:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9152 states, 9150 states have (on average 1.3753005464480874) internal successors, (12584), 9151 states have internal predecessors, (12584), 0 states have call successors, (0), 0 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 01:26:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9152 states to 9152 states and 12584 transitions. [2023-12-22 01:26:43,607 INFO L78 Accepts]: Start accepts. Automaton has 9152 states and 12584 transitions. Word has length 97 [2023-12-22 01:26:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:43,608 INFO L495 AbstractCegarLoop]: Abstraction has 9152 states and 12584 transitions. [2023-12-22 01:26:43,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 01:26:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9152 states and 12584 transitions. [2023-12-22 01:26:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-22 01:26:43,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:43,609 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] [2023-12-22 01:26:43,618 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 01:26:43,812 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 01:26:43,813 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2036256419, now seen corresponding path program 1 times [2023-12-22 01:26:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764642386] [2023-12-22 01:26:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:43,814 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 01:26:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:43,815 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 01:26:43,843 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 01:26:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:43,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:43,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:44,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:45,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764642386] [2023-12-22 01:26:45,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764642386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:45,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:45,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845465278] [2023-12-22 01:26:45,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:45,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:45,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:45,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:45,083 INFO L87 Difference]: Start difference. First operand 9152 states and 12584 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 01:26:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:46,773 INFO L93 Difference]: Finished difference Result 28264 states and 38028 transitions. [2023-12-22 01:26:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:26:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 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 98 [2023-12-22 01:26:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:46,796 INFO L225 Difference]: With dead ends: 28264 [2023-12-22 01:26:46,797 INFO L226 Difference]: Without dead ends: 20678 [2023-12-22 01:26:46,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 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 01:26:46,806 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4923 mSDsluCounter, 10831 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4923 SdHoareTripleChecker+Valid, 12397 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:46,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4923 Valid, 12397 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:26:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20678 states. [2023-12-22 01:26:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20678 to 17312. [2023-12-22 01:26:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17312 states, 17310 states have (on average 1.3425765453495089) internal successors, (23240), 17311 states have internal predecessors, (23240), 0 states have call successors, (0), 0 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 01:26:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17312 states to 17312 states and 23240 transitions. [2023-12-22 01:26:47,249 INFO L78 Accepts]: Start accepts. Automaton has 17312 states and 23240 transitions. Word has length 98 [2023-12-22 01:26:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:47,250 INFO L495 AbstractCegarLoop]: Abstraction has 17312 states and 23240 transitions. [2023-12-22 01:26:47,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 01:26:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17312 states and 23240 transitions. [2023-12-22 01:26:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 01:26:47,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:47,251 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] [2023-12-22 01:26:47,255 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 (23)] Forceful destruction successful, exit code 0 [2023-12-22 01:26:47,454 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 01:26:47,455 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:47,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1955430385, now seen corresponding path program 1 times [2023-12-22 01:26:47,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:47,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971518805] [2023-12-22 01:26:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:47,456 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 01:26:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:47,457 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 01:26:47,462 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 01:26:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:47,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:26:47,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:47,624 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 01:26:47,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:47,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:47,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971518805] [2023-12-22 01:26:47,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971518805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:47,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:47,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681686420] [2023-12-22 01:26:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:47,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:26:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:26:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:26:47,627 INFO L87 Difference]: Start difference. First operand 17312 states and 23240 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 01:26:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:47,856 INFO L93 Difference]: Finished difference Result 25094 states and 33491 transitions. [2023-12-22 01:26:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:26:47,857 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 01:26:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:47,867 INFO L225 Difference]: With dead ends: 25094 [2023-12-22 01:26:47,867 INFO L226 Difference]: Without dead ends: 9348 [2023-12-22 01:26:47,872 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 01:26:47,873 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 35 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3074 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 01:26:47,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2023-12-22 01:26:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9346. [2023-12-22 01:26:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9346 states, 9344 states have (on average 1.3443921232876712) internal successors, (12562), 9345 states have internal predecessors, (12562), 0 states have call successors, (0), 0 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 01:26:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 12562 transitions. [2023-12-22 01:26:48,079 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 12562 transitions. Word has length 100 [2023-12-22 01:26:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:48,079 INFO L495 AbstractCegarLoop]: Abstraction has 9346 states and 12562 transitions. [2023-12-22 01:26:48,079 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 01:26:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 12562 transitions. [2023-12-22 01:26:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-22 01:26:48,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:48,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:26:48,092 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 01:26:48,284 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 01:26:48,284 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:48,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash 69299097, now seen corresponding path program 1 times [2023-12-22 01:26:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717210974] [2023-12-22 01:26:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:48,285 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 01:26:48,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:48,286 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 01:26:48,288 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 01:26:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:48,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:26:48,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:49,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:49,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717210974] [2023-12-22 01:26:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717210974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:49,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:49,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:26:49,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558674505] [2023-12-22 01:26:49,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:26:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:26:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:26:49,649 INFO L87 Difference]: Start difference. First operand 9346 states and 12562 transitions. Second operand has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 01:26:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:51,627 INFO L93 Difference]: Finished difference Result 23780 states and 31213 transitions. [2023-12-22 01:26:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 01:26:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 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 101 [2023-12-22 01:26:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:51,649 INFO L225 Difference]: With dead ends: 23780 [2023-12-22 01:26:51,649 INFO L226 Difference]: Without dead ends: 16000 [2023-12-22 01:26:51,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 01:26:51,659 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 6504 mSDsluCounter, 10746 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6504 SdHoareTripleChecker+Valid, 12294 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:51,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6504 Valid, 12294 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:26:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2023-12-22 01:26:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 14878. [2023-12-22 01:26:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14878 states, 14876 states have (on average 1.313726808281796) internal successors, (19543), 14877 states have internal predecessors, (19543), 0 states have call successors, (0), 0 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 01:26:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14878 states to 14878 states and 19543 transitions. [2023-12-22 01:26:52,201 INFO L78 Accepts]: Start accepts. Automaton has 14878 states and 19543 transitions. Word has length 101 [2023-12-22 01:26:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:52,201 INFO L495 AbstractCegarLoop]: Abstraction has 14878 states and 19543 transitions. [2023-12-22 01:26:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 01:26:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14878 states and 19543 transitions. [2023-12-22 01:26:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-22 01:26:52,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:52,204 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] [2023-12-22 01:26:52,211 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 (25)] Ended with exit code 0 [2023-12-22 01:26:52,408 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 01:26:52,408 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:52,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:52,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1251832017, now seen corresponding path program 1 times [2023-12-22 01:26:52,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:52,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609880697] [2023-12-22 01:26:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:52,409 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 01:26:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:52,410 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 01:26:52,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 01:26:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:52,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:26:52,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:26:52,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:26:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:26:52,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:52,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609880697] [2023-12-22 01:26:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609880697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:26:52,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:26:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:26:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240612978] [2023-12-22 01:26:52,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:26:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 01:26:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 01:26:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 01:26:52,844 INFO L87 Difference]: Start difference. First operand 14878 states and 19543 transitions. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 01:26:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:26:53,799 INFO L93 Difference]: Finished difference Result 52950 states and 67687 transitions. [2023-12-22 01:26:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 01:26:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 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 01:26:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:26:53,847 INFO L225 Difference]: With dead ends: 52950 [2023-12-22 01:26:53,847 INFO L226 Difference]: Without dead ends: 39638 [2023-12-22 01:26:53,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 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 01:26:53,858 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 4509 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:26:53,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 3323 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:26:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39638 states. [2023-12-22 01:26:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39638 to 38784. [2023-12-22 01:26:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38784 states, 38782 states have (on average 1.2431798256923314) internal successors, (48213), 38783 states have internal predecessors, (48213), 0 states have call successors, (0), 0 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 01:26:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38784 states to 38784 states and 48213 transitions. [2023-12-22 01:26:55,019 INFO L78 Accepts]: Start accepts. Automaton has 38784 states and 48213 transitions. Word has length 103 [2023-12-22 01:26:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:26:55,019 INFO L495 AbstractCegarLoop]: Abstraction has 38784 states and 48213 transitions. [2023-12-22 01:26:55,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 01:26:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38784 states and 48213 transitions. [2023-12-22 01:26:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-22 01:26:55,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:26:55,024 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, 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] [2023-12-22 01:26:55,028 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 01:26:55,227 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 01:26:55,228 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:26:55,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:26:55,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1381548846, now seen corresponding path program 1 times [2023-12-22 01:26:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:26:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895882553] [2023-12-22 01:26:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:26:55,229 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 01:26:55,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:26:55,230 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 01:26:55,233 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 01:26:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:26:55,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:26:55,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:26:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:26:56,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:26:56,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:26:56,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895882553] [2023-12-22 01:26:56,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895882553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:26:56,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:26:56,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:26:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100468418] [2023-12-22 01:26:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:26:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:26:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:26:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:26:56,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:26:56,095 INFO L87 Difference]: Start difference. First operand 38784 states and 48213 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 01:27:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:27:30,154 INFO L93 Difference]: Finished difference Result 41073 states and 51498 transitions. [2023-12-22 01:27:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:27:30,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-22 01:27:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:27:30,198 INFO L225 Difference]: With dead ends: 41073 [2023-12-22 01:27:30,198 INFO L226 Difference]: Without dead ends: 39535 [2023-12-22 01:27:30,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:27:30,204 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 802 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:27:30,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 936 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 32.8s Time] [2023-12-22 01:27:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39535 states. [2023-12-22 01:27:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39535 to 39535. [2023-12-22 01:27:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39535 states, 39533 states have (on average 1.238838438772671) internal successors, (48975), 39534 states have internal predecessors, (48975), 0 states have call successors, (0), 0 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 01:27:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39535 states to 39535 states and 48975 transitions. [2023-12-22 01:27:31,324 INFO L78 Accepts]: Start accepts. Automaton has 39535 states and 48975 transitions. Word has length 133 [2023-12-22 01:27:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:27:31,325 INFO L495 AbstractCegarLoop]: Abstraction has 39535 states and 48975 transitions. [2023-12-22 01:27:31,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 01:27:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 39535 states and 48975 transitions. [2023-12-22 01:27:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-22 01:27:31,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:27:31,335 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:31,340 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 01:27:31,537 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 01:27:31,538 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:27:31,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:27:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1888408497, now seen corresponding path program 1 times [2023-12-22 01:27:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:27:31,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074387639] [2023-12-22 01:27:31,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:27:31,539 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 01:27:31,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:27:31,540 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 01:27:31,541 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 01:27:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:27:31,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:27:31,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:27:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:33,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:27:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:33,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:27:33,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074387639] [2023-12-22 01:27:33,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074387639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:27:33,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:27:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:27:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557113179] [2023-12-22 01:27:33,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:27:33,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:27:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:27:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:27:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:27:33,958 INFO L87 Difference]: Start difference. First operand 39535 states and 48975 transitions. Second operand has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 01:27:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:27:37,300 INFO L93 Difference]: Finished difference Result 64483 states and 79966 transitions. [2023-12-22 01:27:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 01:27:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 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 154 [2023-12-22 01:27:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:27:37,344 INFO L225 Difference]: With dead ends: 64483 [2023-12-22 01:27:37,344 INFO L226 Difference]: Without dead ends: 39977 [2023-12-22 01:27:37,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 01:27:37,364 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 14982 mSDsluCounter, 8226 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14982 SdHoareTripleChecker+Valid, 9767 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:27:37,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14982 Valid, 9767 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 01:27:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39977 states. [2023-12-22 01:27:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39977 to 39535. [2023-12-22 01:27:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39535 states, 39533 states have (on average 1.2275820200844865) internal successors, (48530), 39534 states have internal predecessors, (48530), 0 states have call successors, (0), 0 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 01:27:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39535 states to 39535 states and 48530 transitions. [2023-12-22 01:27:38,730 INFO L78 Accepts]: Start accepts. Automaton has 39535 states and 48530 transitions. Word has length 154 [2023-12-22 01:27:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:27:38,731 INFO L495 AbstractCegarLoop]: Abstraction has 39535 states and 48530 transitions. [2023-12-22 01:27:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 01:27:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39535 states and 48530 transitions. [2023-12-22 01:27:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-22 01:27:38,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:27:38,740 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:38,745 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 (28)] Forceful destruction successful, exit code 0 [2023-12-22 01:27:38,946 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 01:27:38,946 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:27:38,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:27:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2052295263, now seen corresponding path program 1 times [2023-12-22 01:27:38,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:27:38,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825198487] [2023-12-22 01:27:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:27:38,947 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 01:27:38,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:27:38,948 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 01:27:38,949 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 01:27:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:27:39,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:27:39,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:27:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:40,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:27:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:40,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:27:40,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825198487] [2023-12-22 01:27:40,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825198487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:27:40,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:27:40,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:27:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501780151] [2023-12-22 01:27:40,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:27:40,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:27:40,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:27:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:27:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:27:40,752 INFO L87 Difference]: Start difference. First operand 39535 states and 48530 transitions. Second operand has 26 states, 26 states have (on average 11.0) internal successors, (286), 25 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 01:27:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:27:43,687 INFO L93 Difference]: Finished difference Result 63479 states and 78325 transitions. [2023-12-22 01:27:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:27:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.0) internal successors, (286), 25 states have internal predecessors, (286), 0 states have call successors, (0), 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 155 [2023-12-22 01:27:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:27:43,743 INFO L225 Difference]: With dead ends: 63479 [2023-12-22 01:27:43,743 INFO L226 Difference]: Without dead ends: 47169 [2023-12-22 01:27:43,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:27:43,759 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 16645 mSDsluCounter, 9624 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16645 SdHoareTripleChecker+Valid, 11165 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:27:43,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16645 Valid, 11165 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:27:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47169 states. [2023-12-22 01:27:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47169 to 39535. [2023-12-22 01:27:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39535 states, 39533 states have (on average 1.2223205929223686) internal successors, (48322), 39534 states have internal predecessors, (48322), 0 states have call successors, (0), 0 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 01:27:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39535 states to 39535 states and 48322 transitions. [2023-12-22 01:27:45,282 INFO L78 Accepts]: Start accepts. Automaton has 39535 states and 48322 transitions. Word has length 155 [2023-12-22 01:27:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:27:45,282 INFO L495 AbstractCegarLoop]: Abstraction has 39535 states and 48322 transitions. [2023-12-22 01:27:45,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.0) internal successors, (286), 25 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 01:27:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39535 states and 48322 transitions. [2023-12-22 01:27:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-22 01:27:45,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:27:45,292 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:45,297 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 01:27:45,495 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 01:27:45,495 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:27:45,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:27:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1920798497, now seen corresponding path program 1 times [2023-12-22 01:27:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:27:45,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496474958] [2023-12-22 01:27:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:27:45,496 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 01:27:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:27:45,497 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 01:27:45,499 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 01:27:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:27:45,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:27:45,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:27:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:47,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:27:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:47,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:27:47,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496474958] [2023-12-22 01:27:47,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496474958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:27:47,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:27:47,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:27:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741866474] [2023-12-22 01:27:47,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:27:47,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:27:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:27:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:27:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:27:47,617 INFO L87 Difference]: Start difference. First operand 39535 states and 48322 transitions. Second operand has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 01:27:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:27:50,853 INFO L93 Difference]: Finished difference Result 61391 states and 75361 transitions. [2023-12-22 01:27:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:27:50,854 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 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 156 [2023-12-22 01:27:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:27:50,900 INFO L225 Difference]: With dead ends: 61391 [2023-12-22 01:27:50,900 INFO L226 Difference]: Without dead ends: 45537 [2023-12-22 01:27:50,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 286 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 01:27:50,909 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 13921 mSDsluCounter, 6614 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13921 SdHoareTripleChecker+Valid, 8155 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:27:50,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13921 Valid, 8155 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:27:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45537 states. [2023-12-22 01:27:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45537 to 39535. [2023-12-22 01:27:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39535 states, 39533 states have (on average 1.2168568031770925) internal successors, (48106), 39534 states have internal predecessors, (48106), 0 states have call successors, (0), 0 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 01:27:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39535 states to 39535 states and 48106 transitions. [2023-12-22 01:27:52,700 INFO L78 Accepts]: Start accepts. Automaton has 39535 states and 48106 transitions. Word has length 156 [2023-12-22 01:27:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:27:52,701 INFO L495 AbstractCegarLoop]: Abstraction has 39535 states and 48106 transitions. [2023-12-22 01:27:52,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 01:27:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 39535 states and 48106 transitions. [2023-12-22 01:27:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-22 01:27:52,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:27:52,710 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:52,715 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 01:27:52,913 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 01:27:52,914 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:27:52,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:27:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash 180444655, now seen corresponding path program 1 times [2023-12-22 01:27:52,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:27:52,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984227653] [2023-12-22 01:27:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:27:52,915 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 01:27:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:27:52,916 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 01:27:52,943 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 01:27:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:27:53,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:27:53,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:27:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 30 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:54,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:27:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 30 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:27:55,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:27:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984227653] [2023-12-22 01:27:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984227653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:27:55,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:27:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:27:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993321566] [2023-12-22 01:27:55,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:27:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:27:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:27:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:27:55,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:27:55,211 INFO L87 Difference]: Start difference. First operand 39535 states and 48106 transitions. Second operand has 26 states, 26 states have (on average 11.461538461538462) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 01:27:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:27:58,468 INFO L93 Difference]: Finished difference Result 59063 states and 72085 transitions. [2023-12-22 01:27:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:27:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.461538461538462) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 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 157 [2023-12-22 01:27:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:27:58,516 INFO L225 Difference]: With dead ends: 59063 [2023-12-22 01:27:58,516 INFO L226 Difference]: Without dead ends: 43737 [2023-12-22 01:27:58,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:27:58,530 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 21282 mSDsluCounter, 7903 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21282 SdHoareTripleChecker+Valid, 9444 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:27:58,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21282 Valid, 9444 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:27:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43737 states. [2023-12-22 01:28:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43737 to 39535. [2023-12-22 01:28:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39535 states, 39533 states have (on average 1.2112918321402373) internal successors, (47886), 39534 states have internal predecessors, (47886), 0 states have call successors, (0), 0 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 01:28:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39535 states to 39535 states and 47886 transitions. [2023-12-22 01:28:00,198 INFO L78 Accepts]: Start accepts. Automaton has 39535 states and 47886 transitions. Word has length 157 [2023-12-22 01:28:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:00,198 INFO L495 AbstractCegarLoop]: Abstraction has 39535 states and 47886 transitions. [2023-12-22 01:28:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.461538461538462) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 01:28:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 39535 states and 47886 transitions. [2023-12-22 01:28:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 01:28:00,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:00,208 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:00,216 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 (31)] Forceful destruction successful, exit code 0 [2023-12-22 01:28:00,411 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 01:28:00,412 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1029455779, now seen corresponding path program 1 times [2023-12-22 01:28:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26336122] [2023-12-22 01:28:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:00,413 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 01:28:00,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:00,414 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 01:28:00,421 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 01:28:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:00,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:28:00,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:02,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:28:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:03,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:28:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26336122] [2023-12-22 01:28:03,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26336122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:28:03,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:28:03,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:28:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90582821] [2023-12-22 01:28:03,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:28:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:28:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:28:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:28:03,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:28:03,046 INFO L87 Difference]: Start difference. First operand 39535 states and 47886 transitions. Second operand has 26 states, 26 states have (on average 11.576923076923077) internal successors, (301), 26 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 01:28:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:28:12,020 INFO L93 Difference]: Finished difference Result 65679 states and 79531 transitions. [2023-12-22 01:28:12,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:28:12,020 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.576923076923077) internal successors, (301), 26 states have internal predecessors, (301), 0 states have call successors, (0), 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 158 [2023-12-22 01:28:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:28:12,084 INFO L225 Difference]: With dead ends: 65679 [2023-12-22 01:28:12,084 INFO L226 Difference]: Without dead ends: 59181 [2023-12-22 01:28:12,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:28:12,100 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 5272 mSDsluCounter, 25800 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 27464 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:28:12,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5272 Valid, 27464 Invalid, 2939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-22 01:28:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59181 states. [2023-12-22 01:28:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59181 to 28175. [2023-12-22 01:28:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28175 states, 28173 states have (on average 1.2171582721044971) internal successors, (34291), 28174 states have internal predecessors, (34291), 0 states have call successors, (0), 0 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 01:28:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28175 states to 28175 states and 34291 transitions. [2023-12-22 01:28:13,637 INFO L78 Accepts]: Start accepts. Automaton has 28175 states and 34291 transitions. Word has length 158 [2023-12-22 01:28:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:13,637 INFO L495 AbstractCegarLoop]: Abstraction has 28175 states and 34291 transitions. [2023-12-22 01:28:13,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.576923076923077) internal successors, (301), 26 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 01:28:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28175 states and 34291 transitions. [2023-12-22 01:28:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 01:28:13,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:13,642 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:13,648 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 01:28:13,845 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 01:28:13,846 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:13,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1216225681, now seen corresponding path program 1 times [2023-12-22 01:28:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436388616] [2023-12-22 01:28:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:13,847 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 01:28:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:13,848 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 01:28:13,848 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 01:28:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:14,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:28:14,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 22 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:15,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:28:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 22 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:16,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:28:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436388616] [2023-12-22 01:28:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436388616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:28:16,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:28:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:28:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987713263] [2023-12-22 01:28:16,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:28:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:28:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:28:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:28:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:28:16,265 INFO L87 Difference]: Start difference. First operand 28175 states and 34291 transitions. Second operand has 26 states, 26 states have (on average 11.692307692307692) internal successors, (304), 25 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 01:28:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:28:19,606 INFO L93 Difference]: Finished difference Result 40573 states and 49378 transitions. [2023-12-22 01:28:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:28:19,607 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.692307692307692) internal successors, (304), 25 states have internal predecessors, (304), 0 states have call successors, (0), 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 158 [2023-12-22 01:28:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:28:19,636 INFO L225 Difference]: With dead ends: 40573 [2023-12-22 01:28:19,637 INFO L226 Difference]: Without dead ends: 29893 [2023-12-22 01:28:19,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:28:19,645 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 19610 mSDsluCounter, 8036 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19610 SdHoareTripleChecker+Valid, 9577 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:28:19,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19610 Valid, 9577 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:28:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29893 states. [2023-12-22 01:28:20,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29893 to 28175. [2023-12-22 01:28:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28175 states, 28173 states have (on average 1.2113370958009442) internal successors, (34127), 28174 states have internal predecessors, (34127), 0 states have call successors, (0), 0 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 01:28:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28175 states to 28175 states and 34127 transitions. [2023-12-22 01:28:20,904 INFO L78 Accepts]: Start accepts. Automaton has 28175 states and 34127 transitions. Word has length 158 [2023-12-22 01:28:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 28175 states and 34127 transitions. [2023-12-22 01:28:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.692307692307692) internal successors, (304), 25 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 01:28:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 28175 states and 34127 transitions. [2023-12-22 01:28:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:28:20,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:20,909 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:20,913 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 (33)] Forceful destruction successful, exit code 0 [2023-12-22 01:28:21,113 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 01:28:21,114 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:21,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 806814079, now seen corresponding path program 1 times [2023-12-22 01:28:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726834502] [2023-12-22 01:28:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:21,115 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 01:28:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:21,116 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 01:28:21,117 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 01:28:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:21,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:28:21,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:23,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:28:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:24,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:28:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726834502] [2023-12-22 01:28:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726834502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:28:24,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:28:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:28:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323606777] [2023-12-22 01:28:24,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:28:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:28:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:28:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:28:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:28:24,119 INFO L87 Difference]: Start difference. First operand 28175 states and 34127 transitions. Second operand has 26 states, 26 states have (on average 12.0) internal successors, (312), 26 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 01:28:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:28:30,764 INFO L93 Difference]: Finished difference Result 46291 states and 55567 transitions. [2023-12-22 01:28:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 01:28:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 26 states have internal predecessors, (312), 0 states have call successors, (0), 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 159 [2023-12-22 01:28:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:28:30,798 INFO L225 Difference]: With dead ends: 46291 [2023-12-22 01:28:30,799 INFO L226 Difference]: Without dead ends: 33801 [2023-12-22 01:28:30,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 01:28:30,807 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 5279 mSDsluCounter, 20525 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 22156 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:28:30,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5279 Valid, 22156 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 01:28:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33801 states. [2023-12-22 01:28:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33801 to 18457. [2023-12-22 01:28:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18457 states, 18455 states have (on average 1.215280411812517) internal successors, (22428), 18456 states have internal predecessors, (22428), 0 states have call successors, (0), 0 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 01:28:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18457 states to 18457 states and 22428 transitions. [2023-12-22 01:28:31,828 INFO L78 Accepts]: Start accepts. Automaton has 18457 states and 22428 transitions. Word has length 159 [2023-12-22 01:28:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:31,828 INFO L495 AbstractCegarLoop]: Abstraction has 18457 states and 22428 transitions. [2023-12-22 01:28:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 26 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 01:28:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 18457 states and 22428 transitions. [2023-12-22 01:28:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:28:31,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:31,831 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:31,835 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 (34)] Ended with exit code 0 [2023-12-22 01:28:32,034 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 01:28:32,035 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:32,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1161519651, now seen corresponding path program 1 times [2023-12-22 01:28:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708859583] [2023-12-22 01:28:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:32,036 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 01:28:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:32,037 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 01:28:32,037 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 01:28:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:32,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:28:32,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:33,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:28:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:34,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:28:34,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708859583] [2023-12-22 01:28:34,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708859583] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:28:34,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:28:34,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:28:34,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308982533] [2023-12-22 01:28:34,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:28:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:28:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:28:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:28:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:28:34,224 INFO L87 Difference]: Start difference. First operand 18457 states and 22428 transitions. Second operand has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 26 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:28:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:28:41,347 INFO L93 Difference]: Finished difference Result 51729 states and 61897 transitions. [2023-12-22 01:28:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:28:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 26 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2023-12-22 01:28:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:28:41,395 INFO L225 Difference]: With dead ends: 51729 [2023-12-22 01:28:41,395 INFO L226 Difference]: Without dead ends: 48067 [2023-12-22 01:28:41,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:28:41,404 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 3983 mSDsluCounter, 20992 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3983 SdHoareTripleChecker+Valid, 22643 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:28:41,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3983 Valid, 22643 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 01:28:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48067 states. [2023-12-22 01:28:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48067 to 40476. [2023-12-22 01:28:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40476 states, 40474 states have (on average 1.1993378465187527) internal successors, (48542), 40475 states have internal predecessors, (48542), 0 states have call successors, (0), 0 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 01:28:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40476 states to 40476 states and 48542 transitions. [2023-12-22 01:28:43,553 INFO L78 Accepts]: Start accepts. Automaton has 40476 states and 48542 transitions. Word has length 159 [2023-12-22 01:28:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 40476 states and 48542 transitions. [2023-12-22 01:28:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 26 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:28:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 40476 states and 48542 transitions. [2023-12-22 01:28:43,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:28:43,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:43,558 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:43,564 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 (35)] Forceful destruction successful, exit code 0 [2023-12-22 01:28:43,762 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 01:28:43,762 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:43,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:43,763 INFO L85 PathProgramCache]: Analyzing trace with hash -849564765, now seen corresponding path program 1 times [2023-12-22 01:28:43,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568870034] [2023-12-22 01:28:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:43,763 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 01:28:43,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:43,764 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 01:28:43,765 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 (36)] Waiting until timeout for monitored process [2023-12-22 01:28:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:43,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:28:43,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:45,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:28:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:46,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:28:46,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568870034] [2023-12-22 01:28:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568870034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:28:46,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:28:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:28:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874862672] [2023-12-22 01:28:46,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:28:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:28:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:28:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:28:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:28:46,059 INFO L87 Difference]: Start difference. First operand 40476 states and 48542 transitions. Second operand has 26 states, 26 states have (on average 11.423076923076923) internal successors, (297), 26 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:28:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:28:54,976 INFO L93 Difference]: Finished difference Result 71750 states and 85821 transitions. [2023-12-22 01:28:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:28:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.423076923076923) internal successors, (297), 26 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2023-12-22 01:28:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:28:55,043 INFO L225 Difference]: With dead ends: 71750 [2023-12-22 01:28:55,043 INFO L226 Difference]: Without dead ends: 62568 [2023-12-22 01:28:55,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 292 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 01:28:55,052 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 4205 mSDsluCounter, 24438 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 26112 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:28:55,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 26112 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 01:28:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62568 states. [2023-12-22 01:28:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62568 to 50323. [2023-12-22 01:28:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50323 states, 50321 states have (on average 1.1957234554162277) internal successors, (60170), 50322 states have internal predecessors, (60170), 0 states have call successors, (0), 0 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 01:28:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50323 states to 50323 states and 60170 transitions. [2023-12-22 01:28:58,002 INFO L78 Accepts]: Start accepts. Automaton has 50323 states and 60170 transitions. Word has length 159 [2023-12-22 01:28:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:28:58,002 INFO L495 AbstractCegarLoop]: Abstraction has 50323 states and 60170 transitions. [2023-12-22 01:28:58,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.423076923076923) internal successors, (297), 26 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:28:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 50323 states and 60170 transitions. [2023-12-22 01:28:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:28:58,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:28:58,008 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:58,011 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 (36)] Ended with exit code 0 [2023-12-22 01:28:58,211 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 01:28:58,212 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:28:58,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:28:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2141294977, now seen corresponding path program 1 times [2023-12-22 01:28:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:28:58,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688786300] [2023-12-22 01:28:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:28:58,213 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 01:28:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:28:58,214 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 01:28:58,215 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 01:28:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:28:58,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:28:58,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:28:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:28:59,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:29:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:29:00,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:29:00,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688786300] [2023-12-22 01:29:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688786300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:29:00,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:29:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:29:00,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876176476] [2023-12-22 01:29:00,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:29:00,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:29:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:29:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:29:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:29:00,206 INFO L87 Difference]: Start difference. First operand 50323 states and 60170 transitions. Second operand has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 26 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 01:29:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:29:10,140 INFO L93 Difference]: Finished difference Result 90927 states and 108288 transitions. [2023-12-22 01:29:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 01:29:10,141 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 26 states have internal predecessors, (292), 0 states have call successors, (0), 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 159 [2023-12-22 01:29:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:29:10,223 INFO L225 Difference]: With dead ends: 90927 [2023-12-22 01:29:10,227 INFO L226 Difference]: Without dead ends: 78439 [2023-12-22 01:29:10,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 292 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 01:29:10,239 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 3853 mSDsluCounter, 24476 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3853 SdHoareTripleChecker+Valid, 26155 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:29:10,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3853 Valid, 26155 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-22 01:29:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78439 states. [2023-12-22 01:29:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78439 to 60881. [2023-12-22 01:29:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60881 states, 60879 states have (on average 1.191888828660129) internal successors, (72561), 60880 states have internal predecessors, (72561), 0 states have call successors, (0), 0 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 01:29:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60881 states to 60881 states and 72561 transitions. [2023-12-22 01:29:13,902 INFO L78 Accepts]: Start accepts. Automaton has 60881 states and 72561 transitions. Word has length 159 [2023-12-22 01:29:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:29:13,902 INFO L495 AbstractCegarLoop]: Abstraction has 60881 states and 72561 transitions. [2023-12-22 01:29:13,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 26 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 01:29:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 60881 states and 72561 transitions. [2023-12-22 01:29:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:29:13,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:29:13,908 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:13,912 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 01:29:14,112 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 01:29:14,113 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:29:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:29:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 160437539, now seen corresponding path program 1 times [2023-12-22 01:29:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:29:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069819210] [2023-12-22 01:29:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:29:14,114 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 01:29:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:29:14,115 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 01:29:14,116 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 01:29:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:29:14,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:29:14,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:29:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:29:15,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:29:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:29:16,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:29:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069819210] [2023-12-22 01:29:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069819210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:29:16,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:29:16,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:29:16,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8220555] [2023-12-22 01:29:16,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:29:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:29:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:29:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:29:16,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:29:16,161 INFO L87 Difference]: Start difference. First operand 60881 states and 72561 transitions. Second operand has 26 states, 26 states have (on average 11.038461538461538) internal successors, (287), 26 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 01:29:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:29:31,680 INFO L93 Difference]: Finished difference Result 177033 states and 207831 transitions. [2023-12-22 01:29:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 01:29:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.038461538461538) internal successors, (287), 26 states have internal predecessors, (287), 0 states have call successors, (0), 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 159 [2023-12-22 01:29:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:29:31,936 INFO L225 Difference]: With dead ends: 177033 [2023-12-22 01:29:31,936 INFO L226 Difference]: Without dead ends: 159651 [2023-12-22 01:29:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 01:29:31,958 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 3583 mSDsluCounter, 24652 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3583 SdHoareTripleChecker+Valid, 26352 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:29:31,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3583 Valid, 26352 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-22 01:29:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159651 states. [2023-12-22 01:29:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159651 to 117131. [2023-12-22 01:29:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117131 states, 117129 states have (on average 1.1816800280033126) internal successors, (138409), 117130 states have internal predecessors, (138409), 0 states have call successors, (0), 0 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 01:29:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117131 states to 117131 states and 138409 transitions. [2023-12-22 01:29:39,981 INFO L78 Accepts]: Start accepts. Automaton has 117131 states and 138409 transitions. Word has length 159 [2023-12-22 01:29:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:29:39,981 INFO L495 AbstractCegarLoop]: Abstraction has 117131 states and 138409 transitions. [2023-12-22 01:29:39,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.038461538461538) internal successors, (287), 26 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 01:29:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 117131 states and 138409 transitions. [2023-12-22 01:29:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-22 01:29:40,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:29:40,034 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, 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, 1, 1, 1, 1, 1, 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 01:29:40,042 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 01:29:40,237 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 01:29:40,238 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:29:40,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:29:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash -449377575, now seen corresponding path program 1 times [2023-12-22 01:29:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:29:40,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257018733] [2023-12-22 01:29:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:29:40,239 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 01:29:40,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:29:40,244 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 01:29:40,249 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 01:29:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:29:40,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:29:40,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:29:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:29:40,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:29:40,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:29:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257018733] [2023-12-22 01:29:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257018733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:29:40,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:29:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:29:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2380291] [2023-12-22 01:29:40,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:29:40,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:29:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:29:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:29:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:29:40,974 INFO L87 Difference]: Start difference. First operand 117131 states and 138409 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 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 01:30:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:30:31,036 INFO L93 Difference]: Finished difference Result 120137 states and 143096 transitions. [2023-12-22 01:30:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:30:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 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 206 [2023-12-22 01:30:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:30:31,164 INFO L225 Difference]: With dead ends: 120137 [2023-12-22 01:30:31,165 INFO L226 Difference]: Without dead ends: 118633 [2023-12-22 01:30:31,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 204 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 01:30:31,181 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 723 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:30:31,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 809 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 44.0s Time] [2023-12-22 01:30:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118633 states. [2023-12-22 01:30:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118633 to 118633. [2023-12-22 01:30:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118633 states, 118631 states have (on average 1.1811499523733258) internal successors, (140121), 118632 states have internal predecessors, (140121), 0 states have call successors, (0), 0 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 01:30:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118633 states to 118633 states and 140121 transitions. [2023-12-22 01:30:38,389 INFO L78 Accepts]: Start accepts. Automaton has 118633 states and 140121 transitions. Word has length 206 [2023-12-22 01:30:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:30:38,389 INFO L495 AbstractCegarLoop]: Abstraction has 118633 states and 140121 transitions. [2023-12-22 01:30:38,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 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 01:30:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 118633 states and 140121 transitions. [2023-12-22 01:30:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:30:38,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:30:38,424 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:30:38,430 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 01:30:38,627 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 01:30:38,628 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:30:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:30:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -488304027, now seen corresponding path program 1 times [2023-12-22 01:30:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:30:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407993809] [2023-12-22 01:30:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:30:38,629 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 01:30:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:30:38,631 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 01:30:38,657 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 01:30:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:30:38,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:30:38,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:30:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:30:41,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:30:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:30:42,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:30:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407993809] [2023-12-22 01:30:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407993809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:30:42,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:30:42,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:30:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261576100] [2023-12-22 01:30:42,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:30:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:30:42,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:30:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:30:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:30:42,638 INFO L87 Difference]: Start difference. First operand 118633 states and 140121 transitions. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 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 01:31:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:31:08,926 INFO L93 Difference]: Finished difference Result 162471 states and 192103 transitions. [2023-12-22 01:31:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-22 01:31:08,926 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 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 217 [2023-12-22 01:31:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:31:09,082 INFO L225 Difference]: With dead ends: 162471 [2023-12-22 01:31:09,083 INFO L226 Difference]: Without dead ends: 151491 [2023-12-22 01:31:09,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4412 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2186, Invalid=14844, Unknown=0, NotChecked=0, Total=17030 [2023-12-22 01:31:09,102 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 5553 mSDsluCounter, 41516 mSDsCounter, 0 mSdLazyCounter, 8240 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 43316 SdHoareTripleChecker+Invalid, 8261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:31:09,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 43316 Invalid, 8261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 8240 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-22 01:31:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151491 states. [2023-12-22 01:31:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151491 to 63468. [2023-12-22 01:31:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63468 states, 63466 states have (on average 1.1863202344562442) internal successors, (75291), 63467 states have internal predecessors, (75291), 0 states have call successors, (0), 0 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 01:31:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63468 states to 63468 states and 75291 transitions. [2023-12-22 01:31:14,443 INFO L78 Accepts]: Start accepts. Automaton has 63468 states and 75291 transitions. Word has length 217 [2023-12-22 01:31:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:31:14,443 INFO L495 AbstractCegarLoop]: Abstraction has 63468 states and 75291 transitions. [2023-12-22 01:31:14,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 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 01:31:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 63468 states and 75291 transitions. [2023-12-22 01:31:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:31:14,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:31:14,462 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:31:14,466 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 01:31:14,665 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 01:31:14,666 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:31:14,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:31:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1666075621, now seen corresponding path program 2 times [2023-12-22 01:31:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:31:14,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942689254] [2023-12-22 01:31:14,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:31:14,667 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 01:31:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:31:14,668 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 01:31:14,694 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 01:31:14,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:31:14,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:31:14,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:31:14,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:31:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-22 01:31:18,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:31:18,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:31:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942689254] [2023-12-22 01:31:18,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942689254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:31:18,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:31:18,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:31:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716020138] [2023-12-22 01:31:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:31:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:31:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:31:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:31:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:18,045 INFO L87 Difference]: Start difference. First operand 63468 states and 75291 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 01:31:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:31:22,879 INFO L93 Difference]: Finished difference Result 93084 states and 111715 transitions. [2023-12-22 01:31:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:31:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 217 [2023-12-22 01:31:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:31:22,968 INFO L225 Difference]: With dead ends: 93084 [2023-12-22 01:31:22,968 INFO L226 Difference]: Without dead ends: 79231 [2023-12-22 01:31:22,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:22,983 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 3307 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 3530 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:31:22,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 3530 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:31:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79231 states. [2023-12-22 01:31:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79231 to 63370. [2023-12-22 01:31:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63370 states, 63368 states have (on average 1.1796490342128518) internal successors, (74752), 63369 states have internal predecessors, (74752), 0 states have call successors, (0), 0 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 01:31:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63370 states to 63370 states and 74752 transitions. [2023-12-22 01:31:27,944 INFO L78 Accepts]: Start accepts. Automaton has 63370 states and 74752 transitions. Word has length 217 [2023-12-22 01:31:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:31:27,944 INFO L495 AbstractCegarLoop]: Abstraction has 63370 states and 74752 transitions. [2023-12-22 01:31:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 01:31:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 63370 states and 74752 transitions. [2023-12-22 01:31:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:31:27,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:31:27,961 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:31:27,966 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 (41)] Forceful destruction successful, exit code 0 [2023-12-22 01:31:28,164 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 01:31:28,165 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:31:28,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:31:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2020781193, now seen corresponding path program 2 times [2023-12-22 01:31:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:31:28,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553196978] [2023-12-22 01:31:28,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:31:28,166 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 01:31:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:31:28,167 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 01:31:28,169 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 01:31:28,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:31:28,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:31:28,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:31:28,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:31:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-22 01:31:31,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:31:31,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:31:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553196978] [2023-12-22 01:31:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553196978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:31:31,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:31:31,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:31:31,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315814857] [2023-12-22 01:31:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:31:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:31:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:31:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:31:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:31,012 INFO L87 Difference]: Start difference. First operand 63370 states and 74752 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:31:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:31:36,446 INFO L93 Difference]: Finished difference Result 85657 states and 102432 transitions. [2023-12-22 01:31:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:31:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 217 [2023-12-22 01:31:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:31:36,536 INFO L225 Difference]: With dead ends: 85657 [2023-12-22 01:31:36,536 INFO L226 Difference]: Without dead ends: 80882 [2023-12-22 01:31:36,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:36,548 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 4827 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:31:36,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 3505 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:31:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80882 states. [2023-12-22 01:31:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80882 to 67433. [2023-12-22 01:31:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67433 states, 67431 states have (on average 1.1779893520784208) internal successors, (79433), 67432 states have internal predecessors, (79433), 0 states have call successors, (0), 0 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 01:31:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67433 states to 67433 states and 79433 transitions. [2023-12-22 01:31:42,002 INFO L78 Accepts]: Start accepts. Automaton has 67433 states and 79433 transitions. Word has length 217 [2023-12-22 01:31:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:31:42,002 INFO L495 AbstractCegarLoop]: Abstraction has 67433 states and 79433 transitions. [2023-12-22 01:31:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:31:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 67433 states and 79433 transitions. [2023-12-22 01:31:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:31:42,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:31:42,021 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:31:42,024 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 (42)] Forceful destruction successful, exit code 0 [2023-12-22 01:31:42,224 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 01:31:42,224 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:31:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:31:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 9696777, now seen corresponding path program 2 times [2023-12-22 01:31:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:31:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75444368] [2023-12-22 01:31:42,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:31:42,225 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 01:31:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:31:42,226 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 01:31:42,228 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 01:31:42,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:31:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:31:42,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:31:42,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:31:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-22 01:31:44,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:31:44,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:31:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75444368] [2023-12-22 01:31:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75444368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:31:44,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:31:44,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:31:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820055650] [2023-12-22 01:31:44,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:31:44,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:31:44,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:31:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:31:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:44,708 INFO L87 Difference]: Start difference. First operand 67433 states and 79433 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 01:31:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:31:50,129 INFO L93 Difference]: Finished difference Result 94196 states and 112643 transitions. [2023-12-22 01:31:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:31:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 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 217 [2023-12-22 01:31:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:31:50,222 INFO L225 Difference]: With dead ends: 94196 [2023-12-22 01:31:50,222 INFO L226 Difference]: Without dead ends: 84847 [2023-12-22 01:31:50,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:50,236 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 3295 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 3560 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:31:50,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3295 Valid, 3560 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:31:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84847 states. [2023-12-22 01:31:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84847 to 75523. [2023-12-22 01:31:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75523 states, 75521 states have (on average 1.1753684405662002) internal successors, (88765), 75522 states have internal predecessors, (88765), 0 states have call successors, (0), 0 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 01:31:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75523 states to 75523 states and 88765 transitions. [2023-12-22 01:31:56,249 INFO L78 Accepts]: Start accepts. Automaton has 75523 states and 88765 transitions. Word has length 217 [2023-12-22 01:31:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:31:56,249 INFO L495 AbstractCegarLoop]: Abstraction has 75523 states and 88765 transitions. [2023-12-22 01:31:56,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 01:31:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 75523 states and 88765 transitions. [2023-12-22 01:31:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:31:56,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:31:56,269 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:31:56,272 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 01:31:56,472 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 01:31:56,472 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:31:56,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:31:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1282033435, now seen corresponding path program 2 times [2023-12-22 01:31:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:31:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845857081] [2023-12-22 01:31:56,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:31:56,473 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 01:31:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:31:56,475 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 01:31:56,476 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 01:31:56,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:31:56,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:31:56,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:31:56,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:31:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-22 01:31:59,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:31:59,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:31:59,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845857081] [2023-12-22 01:31:59,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845857081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:31:59,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:31:59,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:31:59,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998644928] [2023-12-22 01:31:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:31:59,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:31:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:31:59,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:31:59,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:31:59,104 INFO L87 Difference]: Start difference. First operand 75523 states and 88765 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 01:32:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:32:04,962 INFO L93 Difference]: Finished difference Result 96617 states and 114974 transitions. [2023-12-22 01:32:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:32:04,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 217 [2023-12-22 01:32:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:32:05,058 INFO L225 Difference]: With dead ends: 96617 [2023-12-22 01:32:05,058 INFO L226 Difference]: Without dead ends: 90820 [2023-12-22 01:32:05,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:32:05,070 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 4800 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:32:05,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4800 Valid, 3476 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:32:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90820 states. [2023-12-22 01:32:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90820 to 81326. [2023-12-22 01:32:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81326 states, 81324 states have (on average 1.1742904923515813) internal successors, (95498), 81325 states have internal predecessors, (95498), 0 states have call successors, (0), 0 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 01:32:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81326 states to 81326 states and 95498 transitions. [2023-12-22 01:32:11,832 INFO L78 Accepts]: Start accepts. Automaton has 81326 states and 95498 transitions. Word has length 217 [2023-12-22 01:32:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:32:11,832 INFO L495 AbstractCegarLoop]: Abstraction has 81326 states and 95498 transitions. [2023-12-22 01:32:11,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 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 01:32:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 81326 states and 95498 transitions. [2023-12-22 01:32:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 01:32:11,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:32:11,853 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:32:11,856 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 (44)] Forceful destruction successful, exit code 0 [2023-12-22 01:32:12,060 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 01:32:12,061 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:32:12,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:32:12,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1019699081, now seen corresponding path program 2 times [2023-12-22 01:32:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:32:12,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930691808] [2023-12-22 01:32:12,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:32:12,062 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 01:32:12,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:32:12,064 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 01:32:12,065 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 01:32:12,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:32:12,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:32:12,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:32:12,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:32:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-22 01:32:14,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:32:14,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:32:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930691808] [2023-12-22 01:32:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930691808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:32:14,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:32:14,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:32:14,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393062824] [2023-12-22 01:32:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:32:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:32:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:32:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:32:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:32:14,355 INFO L87 Difference]: Start difference. First operand 81326 states and 95498 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 01:32:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:32:20,535 INFO L93 Difference]: Finished difference Result 101558 states and 120636 transitions. [2023-12-22 01:32:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:32:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 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 217 [2023-12-22 01:32:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:32:20,642 INFO L225 Difference]: With dead ends: 101558 [2023-12-22 01:32:20,642 INFO L226 Difference]: Without dead ends: 96236 [2023-12-22 01:32:20,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:32:20,656 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 3286 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3286 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:32:20,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3286 Valid, 3491 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:32:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96236 states. [2023-12-22 01:32:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96236 to 86544. [2023-12-22 01:32:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86544 states, 86542 states have (on average 1.1733955767141966) internal successors, (101548), 86543 states have internal predecessors, (101548), 0 states have call successors, (0), 0 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 01:32:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86544 states to 86544 states and 101548 transitions. [2023-12-22 01:32:27,637 INFO L78 Accepts]: Start accepts. Automaton has 86544 states and 101548 transitions. Word has length 217 [2023-12-22 01:32:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:32:27,637 INFO L495 AbstractCegarLoop]: Abstraction has 86544 states and 101548 transitions. [2023-12-22 01:32:27,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 01:32:27,638 INFO L276 IsEmpty]: Start isEmpty. Operand 86544 states and 101548 transitions. [2023-12-22 01:32:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 01:32:27,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:32:27,663 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 01:32:27,666 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 01:32:27,866 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 01:32:27,867 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:32:27,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:32:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash -496618593, now seen corresponding path program 1 times [2023-12-22 01:32:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:32:27,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784112862] [2023-12-22 01:32:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:32:27,868 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 01:32:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:32:27,876 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 01:32:27,878 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 01:32:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:32:28,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:32:28,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:32:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:32:30,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:32:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:32:31,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:32:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784112862] [2023-12-22 01:32:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784112862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:32:31,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:32:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:32:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883960133] [2023-12-22 01:32:31,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:32:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:32:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:32:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:32:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:32:31,811 INFO L87 Difference]: Start difference. First operand 86544 states and 101548 transitions. Second operand has 36 states, 36 states have (on average 11.777777777777779) internal successors, (424), 36 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 01:33:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:33:05,873 INFO L93 Difference]: Finished difference Result 212855 states and 247999 transitions. [2023-12-22 01:33:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-22 01:33:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.777777777777779) internal successors, (424), 36 states have internal predecessors, (424), 0 states have call successors, (0), 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 218 [2023-12-22 01:33:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:33:06,169 INFO L225 Difference]: With dead ends: 212855 [2023-12-22 01:33:06,169 INFO L226 Difference]: Without dead ends: 203547 [2023-12-22 01:33:06,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4414 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2186, Invalid=14844, Unknown=0, NotChecked=0, Total=17030 [2023-12-22 01:33:06,206 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 3964 mSDsluCounter, 39252 mSDsCounter, 0 mSdLazyCounter, 7468 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3964 SdHoareTripleChecker+Valid, 41030 SdHoareTripleChecker+Invalid, 7487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:33:06,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3964 Valid, 41030 Invalid, 7487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 7468 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-22 01:33:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203547 states. [2023-12-22 01:33:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203547 to 93027. [2023-12-22 01:33:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93027 states, 93025 states have (on average 1.1711797903789305) internal successors, (108949), 93026 states have internal predecessors, (108949), 0 states have call successors, (0), 0 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 01:33:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93027 states to 93027 states and 108949 transitions. [2023-12-22 01:33:15,499 INFO L78 Accepts]: Start accepts. Automaton has 93027 states and 108949 transitions. Word has length 218 [2023-12-22 01:33:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:33:15,499 INFO L495 AbstractCegarLoop]: Abstraction has 93027 states and 108949 transitions. [2023-12-22 01:33:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.777777777777779) internal successors, (424), 36 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 01:33:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 93027 states and 108949 transitions. [2023-12-22 01:33:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 01:33:15,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:33:15,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 01:33:15,533 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 (46)] Forceful destruction successful, exit code 0 [2023-12-22 01:33:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 01:33:15,731 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:33:15,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:33:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1584273951, now seen corresponding path program 1 times [2023-12-22 01:33:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:33:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954366729] [2023-12-22 01:33:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:33:15,733 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 01:33:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:33:15,734 INFO L229 MonitoredProcess]: Starting monitored process 47 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 01:33:15,737 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 (47)] Waiting until timeout for monitored process [2023-12-22 01:33:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:33:15,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:33:15,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:33:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:33:18,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:33:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:33:19,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:33:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954366729] [2023-12-22 01:33:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954366729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:33:19,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:33:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:33:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306805656] [2023-12-22 01:33:19,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:33:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:33:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:33:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:33:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:33:19,182 INFO L87 Difference]: Start difference. First operand 93027 states and 108949 transitions. Second operand has 36 states, 36 states have (on average 11.5) internal successors, (414), 36 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 01:33:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:33:48,815 INFO L93 Difference]: Finished difference Result 139930 states and 163862 transitions. [2023-12-22 01:33:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-22 01:33:48,816 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.5) internal successors, (414), 36 states have internal predecessors, (414), 0 states have call successors, (0), 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 218 [2023-12-22 01:33:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:33:49,001 INFO L225 Difference]: With dead ends: 139930 [2023-12-22 01:33:49,001 INFO L226 Difference]: Without dead ends: 121220 [2023-12-22 01:33:49,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4492 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=2331, Invalid=14961, Unknown=0, NotChecked=0, Total=17292 [2023-12-22 01:33:49,043 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 2588 mSDsluCounter, 36397 mSDsCounter, 0 mSdLazyCounter, 7514 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 38196 SdHoareTripleChecker+Invalid, 7539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:33:49,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2588 Valid, 38196 Invalid, 7539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 7514 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-22 01:33:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121220 states. [2023-12-22 01:33:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121220 to 99187. [2023-12-22 01:33:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99187 states, 99185 states have (on average 1.1706508040530321) internal successors, (116111), 99186 states have internal predecessors, (116111), 0 states have call successors, (0), 0 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 01:33:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99187 states to 99187 states and 116111 transitions. [2023-12-22 01:33:58,724 INFO L78 Accepts]: Start accepts. Automaton has 99187 states and 116111 transitions. Word has length 218 [2023-12-22 01:33:58,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:33:58,724 INFO L495 AbstractCegarLoop]: Abstraction has 99187 states and 116111 transitions. [2023-12-22 01:33:58,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.5) internal successors, (414), 36 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 01:33:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 99187 states and 116111 transitions. [2023-12-22 01:33:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 01:33:58,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:33:58,750 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 01:33:58,754 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 (47)] Ended with exit code 0 [2023-12-22 01:33:58,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 01:33:58,955 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:33:58,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:33:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash 195343043, now seen corresponding path program 1 times [2023-12-22 01:33:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:33:58,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083993499] [2023-12-22 01:33:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:33:58,957 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 01:33:58,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:33:58,958 INFO L229 MonitoredProcess]: Starting monitored process 48 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 01:33:58,959 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 (48)] Waiting until timeout for monitored process [2023-12-22 01:33:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:33:59,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:33:59,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:34:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:34:01,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:34:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:34:02,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:34:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083993499] [2023-12-22 01:34:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083993499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:34:02,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:34:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:34:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928535329] [2023-12-22 01:34:02,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:34:02,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:34:02,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:34:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:34:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:34:02,491 INFO L87 Difference]: Start difference. First operand 99187 states and 116111 transitions. Second operand has 36 states, 36 states have (on average 11.36111111111111) internal successors, (409), 36 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 01:34:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:34:39,328 INFO L93 Difference]: Finished difference Result 151111 states and 176407 transitions. [2023-12-22 01:34:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-22 01:34:39,329 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.36111111111111) internal successors, (409), 36 states have internal predecessors, (409), 0 states have call successors, (0), 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 218 [2023-12-22 01:34:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:34:39,496 INFO L225 Difference]: With dead ends: 151111 [2023-12-22 01:34:39,496 INFO L226 Difference]: Without dead ends: 130488 [2023-12-22 01:34:39,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6254 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=2857, Invalid=19195, Unknown=0, NotChecked=0, Total=22052 [2023-12-22 01:34:39,523 INFO L413 NwaCegarLoop]: 1818 mSDtfsCounter, 7180 mSDsluCounter, 43223 mSDsCounter, 0 mSdLazyCounter, 8846 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7180 SdHoareTripleChecker+Valid, 45041 SdHoareTripleChecker+Invalid, 8878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:34:39,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7180 Valid, 45041 Invalid, 8878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 8846 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-22 01:34:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130488 states. [2023-12-22 01:34:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130488 to 104248. [2023-12-22 01:34:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104248 states, 104246 states have (on average 1.1697523166356503) internal successors, (121942), 104247 states have internal predecessors, (121942), 0 states have call successors, (0), 0 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 01:34:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104248 states to 104248 states and 121942 transitions. [2023-12-22 01:34:49,075 INFO L78 Accepts]: Start accepts. Automaton has 104248 states and 121942 transitions. Word has length 218 [2023-12-22 01:34:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:34:49,075 INFO L495 AbstractCegarLoop]: Abstraction has 104248 states and 121942 transitions. [2023-12-22 01:34:49,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.36111111111111) internal successors, (409), 36 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 01:34:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 104248 states and 121942 transitions. [2023-12-22 01:34:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 01:34:49,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:34:49,096 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 01:34:49,103 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 (48)] Forceful destruction successful, exit code 0 [2023-12-22 01:34:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 01:34:49,301 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:34:49,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:34:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1465392993, now seen corresponding path program 1 times [2023-12-22 01:34:49,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:34:49,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769629418] [2023-12-22 01:34:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:34:49,303 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 01:34:49,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:34:49,304 INFO L229 MonitoredProcess]: Starting monitored process 49 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 01:34:49,305 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 (49)] Waiting until timeout for monitored process [2023-12-22 01:34:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:34:49,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:34:49,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:34:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:34:51,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:34:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:34:52,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:34:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769629418] [2023-12-22 01:34:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769629418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:34:52,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:34:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:34:52,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247625952] [2023-12-22 01:34:52,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:34:52,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:34:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:34:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:34:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:34:52,574 INFO L87 Difference]: Start difference. First operand 104248 states and 121942 transitions. Second operand has 36 states, 36 states have (on average 11.222222222222221) internal successors, (404), 36 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 01:35:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:35:29,167 INFO L93 Difference]: Finished difference Result 162434 states and 188771 transitions. [2023-12-22 01:35:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-22 01:35:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.222222222222221) internal successors, (404), 36 states have internal predecessors, (404), 0 states have call successors, (0), 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 218 [2023-12-22 01:35:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:35:29,351 INFO L225 Difference]: With dead ends: 162434 [2023-12-22 01:35:29,351 INFO L226 Difference]: Without dead ends: 139666 [2023-12-22 01:35:29,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7024 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=3125, Invalid=21367, Unknown=0, NotChecked=0, Total=24492 [2023-12-22 01:35:29,386 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 4231 mSDsluCounter, 36309 mSDsCounter, 0 mSdLazyCounter, 8065 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 38108 SdHoareTripleChecker+Invalid, 8095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 8065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:35:29,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 38108 Invalid, 8095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 8065 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-22 01:35:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139666 states. [2023-12-22 01:35:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139666 to 107251. [2023-12-22 01:35:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107251 states, 107249 states have (on average 1.168598308608938) internal successors, (125331), 107250 states have internal predecessors, (125331), 0 states have call successors, (0), 0 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 01:35:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107251 states to 107251 states and 125331 transitions. [2023-12-22 01:35:39,569 INFO L78 Accepts]: Start accepts. Automaton has 107251 states and 125331 transitions. Word has length 218 [2023-12-22 01:35:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:35:39,569 INFO L495 AbstractCegarLoop]: Abstraction has 107251 states and 125331 transitions. [2023-12-22 01:35:39,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.222222222222221) internal successors, (404), 36 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 01:35:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 107251 states and 125331 transitions. [2023-12-22 01:35:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-22 01:35:39,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:35:39,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:35:39,594 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 (49)] Forceful destruction successful, exit code 0 [2023-12-22 01:35:39,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 01:35:39,795 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:35:39,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:35:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1055738643, now seen corresponding path program 1 times [2023-12-22 01:35:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:35:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74809285] [2023-12-22 01:35:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:35:39,796 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 01:35:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:35:39,798 INFO L229 MonitoredProcess]: Starting monitored process 50 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 01:35:39,799 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 (50)] Waiting until timeout for monitored process [2023-12-22 01:35:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:35:39,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:35:39,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:35:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:35:42,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:35:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:35:43,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:35:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74809285] [2023-12-22 01:35:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74809285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:35:43,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:35:43,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 01:35:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728952895] [2023-12-22 01:35:43,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:35:43,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 01:35:43,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:35:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 01:35:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 01:35:43,594 INFO L87 Difference]: Start difference. First operand 107251 states and 125331 transitions. Second operand has 36 states, 36 states have (on average 11.944444444444445) internal successors, (430), 36 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 01:36:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:36:23,673 INFO L93 Difference]: Finished difference Result 266054 states and 308530 transitions. [2023-12-22 01:36:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-22 01:36:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.944444444444445) internal successors, (430), 36 states have internal predecessors, (430), 0 states have call successors, (0), 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 219 [2023-12-22 01:36:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:36:24,017 INFO L225 Difference]: With dead ends: 266054 [2023-12-22 01:36:24,018 INFO L226 Difference]: Without dead ends: 244544 [2023-12-22 01:36:24,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4175 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2091, Invalid=14165, Unknown=0, NotChecked=0, Total=16256 [2023-12-22 01:36:24,086 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 5684 mSDsluCounter, 35348 mSDsCounter, 0 mSdLazyCounter, 6758 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5684 SdHoareTripleChecker+Valid, 37091 SdHoareTripleChecker+Invalid, 6781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:36:24,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5684 Valid, 37091 Invalid, 6781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6758 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-22 01:36:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244544 states. [2023-12-22 01:36:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244544 to 214814. [2023-12-22 01:36:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214814 states, 214812 states have (on average 1.1633614509431502) internal successors, (249904), 214813 states have internal predecessors, (249904), 0 states have call successors, (0), 0 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 01:36:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214814 states to 214814 states and 249904 transitions. [2023-12-22 01:36:47,208 INFO L78 Accepts]: Start accepts. Automaton has 214814 states and 249904 transitions. Word has length 219 [2023-12-22 01:36:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:36:47,208 INFO L495 AbstractCegarLoop]: Abstraction has 214814 states and 249904 transitions. [2023-12-22 01:36:47,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.944444444444445) internal successors, (430), 36 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 01:36:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 214814 states and 249904 transitions. [2023-12-22 01:36:47,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-22 01:36:47,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:36:47,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:36:47,363 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 (50)] Forceful destruction successful, exit code 0 [2023-12-22 01:36:47,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 01:36:47,560 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:36:47,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:36:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1176167636, now seen corresponding path program 1 times [2023-12-22 01:36:47,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:36:47,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486871700] [2023-12-22 01:36:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:36:47,562 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 01:36:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:36:47,563 INFO L229 MonitoredProcess]: Starting monitored process 51 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 01:36:47,564 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 (51)] Waiting until timeout for monitored process [2023-12-22 01:36:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:36:47,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:36:47,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:36:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:36:48,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:36:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:36:48,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:36:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486871700] [2023-12-22 01:36:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486871700] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 01:36:48,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 01:36:48,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 01:36:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439884045] [2023-12-22 01:36:48,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:36:48,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:36:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:36:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:36:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 01:36:48,450 INFO L87 Difference]: Start difference. First operand 214814 states and 249904 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 01:39:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:16,100 INFO L93 Difference]: Finished difference Result 220824 states and 258027 transitions. [2023-12-22 01:39:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2023-12-22 01:39:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:16,370 INFO L225 Difference]: With dead ends: 220824 [2023-12-22 01:39:16,371 INFO L226 Difference]: Without dead ends: 217818 [2023-12-22 01:39:16,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 01:39:16,402 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 761 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:16,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1089 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 128.2s Time] [2023-12-22 01:39:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217818 states. Received shutdown request... [2023-12-22 01:39:21,824 WARN L340 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 (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 01:39:21,824 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 01:39:22,840 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 (51)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:23,029 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-22 01:39:23,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown