/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:17:50,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:17:50,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 18:17:50,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:17:50,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:17:50,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:17:50,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:17:50,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:17:50,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:17:50,514 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:17:50,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:17:50,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:17:50,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:17:50,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:17:50,516 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:17:50,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:17:50,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:17:50,517 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:17:50,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:17:50,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:17:50,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:17:50,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:17:50,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:17:50,518 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:17:50,518 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:17:50,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:17:50,519 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:17:50,519 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:17:50,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:17:50,519 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:17:50,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:17:50,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:17:50,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:17:50,521 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:17:50,522 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:17:50,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:17:50,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:17:50,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:17:50,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:17:50,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:17:50,523 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:17:50,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:17:50,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:17:50,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:17:50,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:17:50,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:17:50,794 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:17:50,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 18:17:51,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:17:52,040 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:17:52,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 18:17:52,046 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50522b21c/12dad9c15e8c4527babc375f756ab15f/FLAG85c1bc294 [2023-12-16 18:17:52,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50522b21c/12dad9c15e8c4527babc375f756ab15f [2023-12-16 18:17:52,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:17:52,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:17:52,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:17:52,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:17:52,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:17:52,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e99ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52, skipping insertion in model container [2023-12-16 18:17:52,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,103 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:17:52,235 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2023-12-16 18:17:52,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:17:52,260 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:17:52,283 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2023-12-16 18:17:52,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:17:52,303 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:17:52,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52 WrapperNode [2023-12-16 18:17:52,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:17:52,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:17:52,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:17:52,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:17:52,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,342 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 333 [2023-12-16 18:17:52,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:17:52,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:17:52,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:17:52,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:17:52,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,365 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]. [2023-12-16 18:17:52,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:17:52,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:17:52,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:17:52,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:17:52,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (1/1) ... [2023-12-16 18:17:52,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:17:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:17:52,425 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) [2023-12-16 18:17:52,433 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 [2023-12-16 18:17:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:17:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:17:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:17:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:17:52,518 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:17:52,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:17:52,808 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:17:52,848 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:17:52,848 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 18:17:52,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:17:52 BoogieIcfgContainer [2023-12-16 18:17:52,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:17:52,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:17:52,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:17:52,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:17:52,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:17:52" (1/3) ... [2023-12-16 18:17:52,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6301464c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:17:52, skipping insertion in model container [2023-12-16 18:17:52,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:17:52" (2/3) ... [2023-12-16 18:17:52,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6301464c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:17:52, skipping insertion in model container [2023-12-16 18:17:52,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:17:52" (3/3) ... [2023-12-16 18:17:52,855 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-16 18:17:52,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:17:52,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:17:52,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:17:52,928 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;@3b4f2069, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:17:52,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:17:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 18:17:52,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:52,950 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] [2023-12-16 18:17:52,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:52,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash -544712237, now seen corresponding path program 1 times [2023-12-16 18:17:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:52,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658181799] [2023-12-16 18:17:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:52,968 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 [2023-12-16 18:17:52,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:52,977 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) [2023-12-16 18:17:52,978 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 [2023-12-16 18:17:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:53,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:53,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:53,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:53,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658181799] [2023-12-16 18:17:53,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658181799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:53,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:53,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333126340] [2023-12-16 18:17:53,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:53,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:53,244 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:53,288 INFO L93 Difference]: Finished difference Result 186 states and 296 transitions. [2023-12-16 18:17:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-16 18:17:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:53,296 INFO L225 Difference]: With dead ends: 186 [2023-12-16 18:17:53,296 INFO L226 Difference]: Without dead ends: 121 [2023-12-16 18:17:53,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:53,300 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 86 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 259 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 [2023-12-16 18:17:53,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-16 18:17:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-16 18:17:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.5) internal successors, (177), 118 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 177 transitions. [2023-12-16 18:17:53,328 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 177 transitions. Word has length 36 [2023-12-16 18:17:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:53,328 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 177 transitions. [2023-12-16 18:17:53,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 177 transitions. [2023-12-16 18:17:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 18:17:53,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:53,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:53,336 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 [2023-12-16 18:17:53,532 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 [2023-12-16 18:17:53,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:53,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1387798961, now seen corresponding path program 1 times [2023-12-16 18:17:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:53,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195639197] [2023-12-16 18:17:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:53,534 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 [2023-12-16 18:17:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:53,539 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) [2023-12-16 18:17:53,563 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 [2023-12-16 18:17:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:53,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:53,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:53,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:53,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:53,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195639197] [2023-12-16 18:17:53,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195639197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:53,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:53,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:53,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634732202] [2023-12-16 18:17:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:53,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:53,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:53,652 INFO L87 Difference]: Start difference. First operand 119 states and 177 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:53,679 INFO L93 Difference]: Finished difference Result 287 states and 441 transitions. [2023-12-16 18:17:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-16 18:17:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:53,681 INFO L225 Difference]: With dead ends: 287 [2023-12-16 18:17:53,681 INFO L226 Difference]: Without dead ends: 187 [2023-12-16 18:17:53,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:53,682 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:53,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-16 18:17:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-12-16 18:17:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.5217391304347827) internal successors, (280), 184 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) [2023-12-16 18:17:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 280 transitions. [2023-12-16 18:17:53,693 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 280 transitions. Word has length 37 [2023-12-16 18:17:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:53,694 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 280 transitions. [2023-12-16 18:17:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 280 transitions. [2023-12-16 18:17:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 18:17:53,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:53,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:53,699 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 (3)] Ended with exit code 0 [2023-12-16 18:17:53,897 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 [2023-12-16 18:17:53,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:53,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -312459046, now seen corresponding path program 1 times [2023-12-16 18:17:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:53,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544886532] [2023-12-16 18:17:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:53,898 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 [2023-12-16 18:17:53,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:53,901 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) [2023-12-16 18:17:53,924 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 [2023-12-16 18:17:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:53,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:53,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:54,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:54,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544886532] [2023-12-16 18:17:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544886532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550033284] [2023-12-16 18:17:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:54,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:54,095 INFO L87 Difference]: Start difference. First operand 185 states and 280 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:54,141 INFO L93 Difference]: Finished difference Result 627 states and 971 transitions. [2023-12-16 18:17:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:54,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-16 18:17:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:54,147 INFO L225 Difference]: With dead ends: 627 [2023-12-16 18:17:54,147 INFO L226 Difference]: Without dead ends: 461 [2023-12-16 18:17:54,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:54,152 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 278 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:54,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 370 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-16 18:17:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 457. [2023-12-16 18:17:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.543859649122807) internal successors, (704), 456 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 704 transitions. [2023-12-16 18:17:54,186 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 704 transitions. Word has length 38 [2023-12-16 18:17:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 704 transitions. [2023-12-16 18:17:54,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 704 transitions. [2023-12-16 18:17:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 18:17:54,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:54,188 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] [2023-12-16 18:17:54,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:54,393 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 [2023-12-16 18:17:54,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:54,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1798803331, now seen corresponding path program 1 times [2023-12-16 18:17:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482087812] [2023-12-16 18:17:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:54,394 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 [2023-12-16 18:17:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:54,398 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) [2023-12-16 18:17:54,400 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 [2023-12-16 18:17:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:54,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:54,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:54,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:54,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482087812] [2023-12-16 18:17:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482087812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:54,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:54,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:17:54,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794469745] [2023-12-16 18:17:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:54,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:54,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:54,748 INFO L87 Difference]: Start difference. First operand 457 states and 704 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:54,895 INFO L93 Difference]: Finished difference Result 1333 states and 2074 transitions. [2023-12-16 18:17:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-16 18:17:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:54,898 INFO L225 Difference]: With dead ends: 1333 [2023-12-16 18:17:54,898 INFO L226 Difference]: Without dead ends: 895 [2023-12-16 18:17:54,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:17:54,905 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 276 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:54,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 135 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-12-16 18:17:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 893. [2023-12-16 18:17:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.547085201793722) internal successors, (1380), 892 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1380 transitions. [2023-12-16 18:17:54,939 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1380 transitions. Word has length 40 [2023-12-16 18:17:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:54,940 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1380 transitions. [2023-12-16 18:17:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1380 transitions. [2023-12-16 18:17:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 18:17:54,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:54,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:54,948 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 [2023-12-16 18:17:55,148 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 [2023-12-16 18:17:55,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:55,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2128354920, now seen corresponding path program 1 times [2023-12-16 18:17:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896675449] [2023-12-16 18:17:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:55,150 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 [2023-12-16 18:17:55,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:55,151 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) [2023-12-16 18:17:55,153 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 [2023-12-16 18:17:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:55,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:55,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:55,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:55,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896675449] [2023-12-16 18:17:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896675449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:55,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:55,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377601643] [2023-12-16 18:17:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:55,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:55,391 INFO L87 Difference]: Start difference. First operand 893 states and 1380 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:55,446 INFO L93 Difference]: Finished difference Result 3545 states and 5502 transitions. [2023-12-16 18:17:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:55,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-16 18:17:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:55,458 INFO L225 Difference]: With dead ends: 3545 [2023-12-16 18:17:55,458 INFO L226 Difference]: Without dead ends: 2671 [2023-12-16 18:17:55,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:55,461 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 318 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:55,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 459 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2023-12-16 18:17:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1765. [2023-12-16 18:17:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 1.526077097505669) internal successors, (2692), 1764 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2692 transitions. [2023-12-16 18:17:55,512 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2692 transitions. Word has length 40 [2023-12-16 18:17:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:55,513 INFO L495 AbstractCegarLoop]: Abstraction has 1765 states and 2692 transitions. [2023-12-16 18:17:55,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2692 transitions. [2023-12-16 18:17:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 18:17:55,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:55,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:55,519 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 [2023-12-16 18:17:55,717 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 [2023-12-16 18:17:55,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:55,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1535036766, now seen corresponding path program 1 times [2023-12-16 18:17:55,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:55,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177343060] [2023-12-16 18:17:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:55,718 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 [2023-12-16 18:17:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:55,719 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) [2023-12-16 18:17:55,722 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 [2023-12-16 18:17:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:55,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:17:55,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:55,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:55,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177343060] [2023-12-16 18:17:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177343060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:55,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:55,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:17:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38417995] [2023-12-16 18:17:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:17:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:17:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:17:55,812 INFO L87 Difference]: Start difference. First operand 1765 states and 2692 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:55,848 INFO L93 Difference]: Finished difference Result 3607 states and 5461 transitions. [2023-12-16 18:17:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-16 18:17:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:55,858 INFO L225 Difference]: With dead ends: 3607 [2023-12-16 18:17:55,858 INFO L226 Difference]: Without dead ends: 3605 [2023-12-16 18:17:55,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:55,862 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 174 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 391 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 [2023-12-16 18:17:55,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 391 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2023-12-16 18:17:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 1861. [2023-12-16 18:17:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.4989247311827958) internal successors, (2788), 1860 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2788 transitions. [2023-12-16 18:17:55,917 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2788 transitions. Word has length 41 [2023-12-16 18:17:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:55,918 INFO L495 AbstractCegarLoop]: Abstraction has 1861 states and 2788 transitions. [2023-12-16 18:17:55,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2788 transitions. [2023-12-16 18:17:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 18:17:55,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:55,920 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] [2023-12-16 18:17:55,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 18:17:56,122 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 [2023-12-16 18:17:56,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:56,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash 352072504, now seen corresponding path program 1 times [2023-12-16 18:17:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588064294] [2023-12-16 18:17:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:56,124 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 [2023-12-16 18:17:56,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:56,125 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) [2023-12-16 18:17:56,153 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 [2023-12-16 18:17:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:56,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:56,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:56,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:56,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588064294] [2023-12-16 18:17:56,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588064294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:56,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:56,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39216276] [2023-12-16 18:17:56,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:56,226 INFO L87 Difference]: Start difference. First operand 1861 states and 2788 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:56,250 INFO L93 Difference]: Finished difference Result 4961 states and 7384 transitions. [2023-12-16 18:17:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-16 18:17:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:56,259 INFO L225 Difference]: With dead ends: 4961 [2023-12-16 18:17:56,259 INFO L226 Difference]: Without dead ends: 3119 [2023-12-16 18:17:56,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:56,263 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:56,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2023-12-16 18:17:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3077. [2023-12-16 18:17:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.4609882964889467) internal successors, (4494), 3076 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4494 transitions. [2023-12-16 18:17:56,311 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4494 transitions. Word has length 42 [2023-12-16 18:17:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:56,311 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4494 transitions. [2023-12-16 18:17:56,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4494 transitions. [2023-12-16 18:17:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 18:17:56,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:56,312 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] [2023-12-16 18:17:56,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 18:17:56,515 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 [2023-12-16 18:17:56,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:56,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1282227984, now seen corresponding path program 1 times [2023-12-16 18:17:56,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220574313] [2023-12-16 18:17:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:56,516 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 [2023-12-16 18:17:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:56,518 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) [2023-12-16 18:17:56,519 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 [2023-12-16 18:17:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:56,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:56,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:56,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:56,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:56,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220574313] [2023-12-16 18:17:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220574313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517621458] [2023-12-16 18:17:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:56,581 INFO L87 Difference]: Start difference. First operand 3077 states and 4494 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:56,607 INFO L93 Difference]: Finished difference Result 6140 states and 9028 transitions. [2023-12-16 18:17:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-16 18:17:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:56,618 INFO L225 Difference]: With dead ends: 6140 [2023-12-16 18:17:56,618 INFO L226 Difference]: Without dead ends: 4297 [2023-12-16 18:17:56,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:56,622 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:56,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 262 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2023-12-16 18:17:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4295. [2023-12-16 18:17:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4294 states have (on average 1.4457382394038192) internal successors, (6208), 4294 states have internal predecessors, (6208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 6208 transitions. [2023-12-16 18:17:56,703 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 6208 transitions. Word has length 42 [2023-12-16 18:17:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:56,703 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 6208 transitions. [2023-12-16 18:17:56,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 6208 transitions. [2023-12-16 18:17:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 18:17:56,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:56,705 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] [2023-12-16 18:17:56,709 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 [2023-12-16 18:17:56,907 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 [2023-12-16 18:17:56,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:56,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash 957083373, now seen corresponding path program 1 times [2023-12-16 18:17:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292222155] [2023-12-16 18:17:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:56,908 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 [2023-12-16 18:17:56,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:56,909 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) [2023-12-16 18:17:56,917 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 [2023-12-16 18:17:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:56,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:56,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:56,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:56,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292222155] [2023-12-16 18:17:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292222155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:56,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003395190] [2023-12-16 18:17:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:56,991 INFO L87 Difference]: Start difference. First operand 4295 states and 6208 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:57,022 INFO L93 Difference]: Finished difference Result 7435 states and 10793 transitions. [2023-12-16 18:17:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 18:17:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:57,030 INFO L225 Difference]: With dead ends: 7435 [2023-12-16 18:17:57,030 INFO L226 Difference]: Without dead ends: 3161 [2023-12-16 18:17:57,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:57,035 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 64 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:57,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2023-12-16 18:17:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3159. [2023-12-16 18:17:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3158 states have (on average 1.44205193160228) internal successors, (4554), 3158 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4554 transitions. [2023-12-16 18:17:57,075 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4554 transitions. Word has length 60 [2023-12-16 18:17:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:57,076 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 4554 transitions. [2023-12-16 18:17:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4554 transitions. [2023-12-16 18:17:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:57,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:57,077 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:57,082 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 [2023-12-16 18:17:57,279 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 [2023-12-16 18:17:57,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:57,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1920820192, now seen corresponding path program 1 times [2023-12-16 18:17:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765601957] [2023-12-16 18:17:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:57,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:57,282 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) [2023-12-16 18:17:57,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 18:17:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:57,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:17:57,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:57,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:58,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:58,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765601957] [2023-12-16 18:17:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765601957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:58,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:17:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893657834] [2023-12-16 18:17:58,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:58,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:17:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:17:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:17:58,107 INFO L87 Difference]: Start difference. First operand 3159 states and 4554 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:03,836 INFO L93 Difference]: Finished difference Result 19436 states and 27627 transitions. [2023-12-16 18:18:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-16 18:18:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:18:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:03,885 INFO L225 Difference]: With dead ends: 19436 [2023-12-16 18:18:03,885 INFO L226 Difference]: Without dead ends: 16378 [2023-12-16 18:18:03,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4704 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-16 18:18:03,894 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 2525 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:03,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 1907 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 18:18:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16378 states. [2023-12-16 18:18:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16378 to 3458. [2023-12-16 18:18:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.4321666184553081) internal successors, (4951), 3457 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4951 transitions. [2023-12-16 18:18:04,034 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4951 transitions. Word has length 61 [2023-12-16 18:18:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:04,034 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4951 transitions. [2023-12-16 18:18:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4951 transitions. [2023-12-16 18:18:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:18:04,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:04,041 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:04,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 18:18:04,245 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 [2023-12-16 18:18:04,245 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1325244919, now seen corresponding path program 1 times [2023-12-16 18:18:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957947381] [2023-12-16 18:18:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:04,247 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 [2023-12-16 18:18:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:04,261 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) [2023-12-16 18:18:04,279 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 [2023-12-16 18:18:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:04,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:18:04,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 18:18:04,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:04,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957947381] [2023-12-16 18:18:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957947381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:04,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:18:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092060487] [2023-12-16 18:18:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:18:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:18:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:04,472 INFO L87 Difference]: Start difference. First operand 3458 states and 4951 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:04,603 INFO L93 Difference]: Finished difference Result 10190 states and 14625 transitions. [2023-12-16 18:18:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:18:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:04,614 INFO L225 Difference]: With dead ends: 10190 [2023-12-16 18:18:04,614 INFO L226 Difference]: Without dead ends: 6802 [2023-12-16 18:18:04,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:18:04,620 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 267 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 143 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:18:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6802 states. [2023-12-16 18:18:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6802 to 6800. [2023-12-16 18:18:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 1.4280041182526841) internal successors, (9709), 6799 states have internal predecessors, (9709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9709 transitions. [2023-12-16 18:18:04,702 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9709 transitions. Word has length 61 [2023-12-16 18:18:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:04,702 INFO L495 AbstractCegarLoop]: Abstraction has 6800 states and 9709 transitions. [2023-12-16 18:18:04,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9709 transitions. [2023-12-16 18:18:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:18:04,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:04,704 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:04,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-16 18:18:04,906 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 [2023-12-16 18:18:04,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:04,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -71711012, now seen corresponding path program 1 times [2023-12-16 18:18:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025090689] [2023-12-16 18:18:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:04,907 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 [2023-12-16 18:18:04,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:04,908 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) [2023-12-16 18:18:04,910 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 [2023-12-16 18:18:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:04,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:18:04,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:05,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:05,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025090689] [2023-12-16 18:18:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025090689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:05,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:05,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:18:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386842040] [2023-12-16 18:18:05,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:18:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:18:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:18:05,452 INFO L87 Difference]: Start difference. First operand 6800 states and 9709 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:08,147 INFO L93 Difference]: Finished difference Result 24320 states and 34263 transitions. [2023-12-16 18:18:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-16 18:18:08,148 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:18:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:08,172 INFO L225 Difference]: With dead ends: 24320 [2023-12-16 18:18:08,172 INFO L226 Difference]: Without dead ends: 17634 [2023-12-16 18:18:08,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=977, Invalid=3183, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 18:18:08,184 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1927 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:08,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 1561 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 18:18:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17634 states. [2023-12-16 18:18:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17634 to 6748. [2023-12-16 18:18:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6747 states have (on average 1.4221135319401215) internal successors, (9595), 6747 states have internal predecessors, (9595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 9595 transitions. [2023-12-16 18:18:08,348 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 9595 transitions. Word has length 61 [2023-12-16 18:18:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:08,348 INFO L495 AbstractCegarLoop]: Abstraction has 6748 states and 9595 transitions. [2023-12-16 18:18:08,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 9595 transitions. [2023-12-16 18:18:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:18:08,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:08,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:08,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 18:18:08,570 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 [2023-12-16 18:18:08,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:08,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1943266083, now seen corresponding path program 1 times [2023-12-16 18:18:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:08,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900784715] [2023-12-16 18:18:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:08,571 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 [2023-12-16 18:18:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:08,589 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) [2023-12-16 18:18:08,590 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 [2023-12-16 18:18:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:08,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:18:08,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 18:18:08,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:08,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900784715] [2023-12-16 18:18:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900784715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:08,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:18:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586494204] [2023-12-16 18:18:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:08,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:18:08,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:18:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:08,769 INFO L87 Difference]: Start difference. First operand 6748 states and 9595 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:08,944 INFO L93 Difference]: Finished difference Result 18125 states and 25778 transitions. [2023-12-16 18:18:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 [2023-12-16 18:18:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:08,963 INFO L225 Difference]: With dead ends: 18125 [2023-12-16 18:18:08,963 INFO L226 Difference]: Without dead ends: 11414 [2023-12-16 18:18:08,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:18:08,971 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 468 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:08,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 131 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:18:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2023-12-16 18:18:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 11412. [2023-12-16 18:18:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11412 states, 11411 states have (on average 1.4130225221277715) internal successors, (16124), 11411 states have internal predecessors, (16124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11412 states to 11412 states and 16124 transitions. [2023-12-16 18:18:09,149 INFO L78 Accepts]: Start accepts. Automaton has 11412 states and 16124 transitions. Word has length 62 [2023-12-16 18:18:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:09,149 INFO L495 AbstractCegarLoop]: Abstraction has 11412 states and 16124 transitions. [2023-12-16 18:18:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11412 states and 16124 transitions. [2023-12-16 18:18:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:18:09,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:09,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:09,159 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 [2023-12-16 18:18:09,357 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 [2023-12-16 18:18:09,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:09,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -677435518, now seen corresponding path program 1 times [2023-12-16 18:18:09,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:09,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017985644] [2023-12-16 18:18:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:09,358 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 [2023-12-16 18:18:09,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:09,385 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) [2023-12-16 18:18:09,450 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 [2023-12-16 18:18:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:09,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:18:09,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:09,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:10,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017985644] [2023-12-16 18:18:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017985644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:10,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:10,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:18:10,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297855752] [2023-12-16 18:18:10,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:18:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:18:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:18:10,034 INFO L87 Difference]: Start difference. First operand 11412 states and 16124 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 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) [2023-12-16 18:18:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:13,667 INFO L93 Difference]: Finished difference Result 74542 states and 104278 transitions. [2023-12-16 18:18:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-16 18:18:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 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 62 [2023-12-16 18:18:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:13,798 INFO L225 Difference]: With dead ends: 74542 [2023-12-16 18:18:13,799 INFO L226 Difference]: Without dead ends: 63244 [2023-12-16 18:18:13,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=912, Invalid=3248, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 18:18:13,834 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 2556 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:13,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 1912 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 18:18:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63244 states. [2023-12-16 18:18:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63244 to 12876. [2023-12-16 18:18:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12876 states, 12875 states have (on average 1.4027184466019418) internal successors, (18060), 12875 states have internal predecessors, (18060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12876 states to 12876 states and 18060 transitions. [2023-12-16 18:18:14,621 INFO L78 Accepts]: Start accepts. Automaton has 12876 states and 18060 transitions. Word has length 62 [2023-12-16 18:18:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:14,621 INFO L495 AbstractCegarLoop]: Abstraction has 12876 states and 18060 transitions. [2023-12-16 18:18:14,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 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) [2023-12-16 18:18:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12876 states and 18060 transitions. [2023-12-16 18:18:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:18:14,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:14,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:14,626 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 [2023-12-16 18:18:14,826 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 [2023-12-16 18:18:14,826 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:14,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:14,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1425515677, now seen corresponding path program 1 times [2023-12-16 18:18:14,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:14,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159657482] [2023-12-16 18:18:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:14,827 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 [2023-12-16 18:18:14,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:14,829 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) [2023-12-16 18:18:14,830 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 [2023-12-16 18:18:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:14,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:18:14,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:18:14,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:18:15,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159657482] [2023-12-16 18:18:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159657482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:15,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 18:18:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577000177] [2023-12-16 18:18:15,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:15,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:18:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:18:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:18:15,027 INFO L87 Difference]: Start difference. First operand 12876 states and 18060 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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) [2023-12-16 18:18:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:15,120 INFO L93 Difference]: Finished difference Result 41840 states and 58393 transitions. [2023-12-16 18:18:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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 62 [2023-12-16 18:18:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:15,156 INFO L225 Difference]: With dead ends: 41840 [2023-12-16 18:18:15,156 INFO L226 Difference]: Without dead ends: 29126 [2023-12-16 18:18:15,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:18:15,172 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 178 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:15,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 526 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29126 states. [2023-12-16 18:18:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29126 to 28918. [2023-12-16 18:18:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28918 states, 28917 states have (on average 1.3616903551544075) internal successors, (39376), 28917 states have internal predecessors, (39376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28918 states to 28918 states and 39376 transitions. [2023-12-16 18:18:15,637 INFO L78 Accepts]: Start accepts. Automaton has 28918 states and 39376 transitions. Word has length 62 [2023-12-16 18:18:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 28918 states and 39376 transitions. [2023-12-16 18:18:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 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) [2023-12-16 18:18:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28918 states and 39376 transitions. [2023-12-16 18:18:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:18:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:15,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:15,646 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 [2023-12-16 18:18:15,839 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 [2023-12-16 18:18:15,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:15,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -778715122, now seen corresponding path program 1 times [2023-12-16 18:18:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:15,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704562928] [2023-12-16 18:18:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:15,840 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 [2023-12-16 18:18:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:15,843 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) [2023-12-16 18:18:15,844 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 [2023-12-16 18:18:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:15,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:18:15,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:15,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:15,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704562928] [2023-12-16 18:18:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704562928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:18:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505614876] [2023-12-16 18:18:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:15,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:18:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:18:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:15,953 INFO L87 Difference]: Start difference. First operand 28918 states and 39376 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:16,103 INFO L93 Difference]: Finished difference Result 41968 states and 56816 transitions. [2023-12-16 18:18:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:18:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:18:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:16,125 INFO L225 Difference]: With dead ends: 41968 [2023-12-16 18:18:16,125 INFO L226 Difference]: Without dead ends: 24179 [2023-12-16 18:18:16,139 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 [2023-12-16 18:18:16,140 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 60 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 240 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24179 states. [2023-12-16 18:18:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24179 to 22888. [2023-12-16 18:18:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22888 states, 22887 states have (on average 1.330755450692533) internal successors, (30457), 22887 states have internal predecessors, (30457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22888 states to 22888 states and 30457 transitions. [2023-12-16 18:18:16,478 INFO L78 Accepts]: Start accepts. Automaton has 22888 states and 30457 transitions. Word has length 62 [2023-12-16 18:18:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 22888 states and 30457 transitions. [2023-12-16 18:18:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22888 states and 30457 transitions. [2023-12-16 18:18:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:18:16,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:16,481 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:16,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 18:18:16,684 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 [2023-12-16 18:18:16,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:16,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1492466706, now seen corresponding path program 1 times [2023-12-16 18:18:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757309007] [2023-12-16 18:18:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:16,685 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 [2023-12-16 18:18:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:16,686 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) [2023-12-16 18:18:16,688 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 [2023-12-16 18:18:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:16,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:18:16,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:16,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:16,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757309007] [2023-12-16 18:18:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757309007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:16,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:18:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313464076] [2023-12-16 18:18:16,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:18:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:18:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:16,771 INFO L87 Difference]: Start difference. First operand 22888 states and 30457 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:16,963 INFO L93 Difference]: Finished difference Result 43061 states and 57123 transitions. [2023-12-16 18:18:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:18:16,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:18:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:16,997 INFO L225 Difference]: With dead ends: 43061 [2023-12-16 18:18:16,997 INFO L226 Difference]: Without dead ends: 25898 [2023-12-16 18:18:17,011 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 [2023-12-16 18:18:17,012 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 56 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:17,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 218 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25898 states. [2023-12-16 18:18:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25898 to 19854. [2023-12-16 18:18:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19854 states, 19853 states have (on average 1.316274618445575) internal successors, (26132), 19853 states have internal predecessors, (26132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19854 states to 19854 states and 26132 transitions. [2023-12-16 18:18:17,371 INFO L78 Accepts]: Start accepts. Automaton has 19854 states and 26132 transitions. Word has length 62 [2023-12-16 18:18:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 19854 states and 26132 transitions. [2023-12-16 18:18:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 19854 states and 26132 transitions. [2023-12-16 18:18:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 18:18:17,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:17,373 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:17,404 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 [2023-12-16 18:18:17,574 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 [2023-12-16 18:18:17,574 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:17,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2138548027, now seen corresponding path program 1 times [2023-12-16 18:18:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931078541] [2023-12-16 18:18:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:17,575 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 [2023-12-16 18:18:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:17,576 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) [2023-12-16 18:18:17,577 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 [2023-12-16 18:18:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:17,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:18:17,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:17,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:17,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931078541] [2023-12-16 18:18:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931078541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:17,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:18:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539820863] [2023-12-16 18:18:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:17,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:18:17,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:18:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:17,678 INFO L87 Difference]: Start difference. First operand 19854 states and 26132 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:17,838 INFO L93 Difference]: Finished difference Result 32554 states and 42595 transitions. [2023-12-16 18:18:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:18:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 18:18:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:17,861 INFO L225 Difference]: With dead ends: 32554 [2023-12-16 18:18:17,861 INFO L226 Difference]: Without dead ends: 17094 [2023-12-16 18:18:17,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:17,870 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 57 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:17,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 248 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2023-12-16 18:18:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 16635. [2023-12-16 18:18:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16635 states, 16634 states have (on average 1.2876037032583865) internal successors, (21418), 16634 states have internal predecessors, (21418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16635 states to 16635 states and 21418 transitions. [2023-12-16 18:18:18,161 INFO L78 Accepts]: Start accepts. Automaton has 16635 states and 21418 transitions. Word has length 63 [2023-12-16 18:18:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:18,161 INFO L495 AbstractCegarLoop]: Abstraction has 16635 states and 21418 transitions. [2023-12-16 18:18:18,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16635 states and 21418 transitions. [2023-12-16 18:18:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 18:18:18,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:18,163 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:18,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 18:18:18,363 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 [2023-12-16 18:18:18,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:18,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash -520885988, now seen corresponding path program 1 times [2023-12-16 18:18:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466014158] [2023-12-16 18:18:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:18,365 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 [2023-12-16 18:18:18,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:18,366 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) [2023-12-16 18:18:18,398 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 [2023-12-16 18:18:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:18,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:18:18,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:18,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:18,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466014158] [2023-12-16 18:18:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466014158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:18,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:18:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103894978] [2023-12-16 18:18:18,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:18:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:18:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:18:18,581 INFO L87 Difference]: Start difference. First operand 16635 states and 21418 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2023-12-16 18:18:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:18,776 INFO L93 Difference]: Finished difference Result 33952 states and 43604 transitions. [2023-12-16 18:18:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 18:18:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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 63 [2023-12-16 18:18:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:18,793 INFO L225 Difference]: With dead ends: 33952 [2023-12-16 18:18:18,793 INFO L226 Difference]: Without dead ends: 17473 [2023-12-16 18:18:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:18:18,804 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 853 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:18,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 358 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:18:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17473 states. [2023-12-16 18:18:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17473 to 15811. [2023-12-16 18:18:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15811 states, 15810 states have (on average 1.264326375711575) internal successors, (19989), 15810 states have internal predecessors, (19989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15811 states to 15811 states and 19989 transitions. [2023-12-16 18:18:19,041 INFO L78 Accepts]: Start accepts. Automaton has 15811 states and 19989 transitions. Word has length 63 [2023-12-16 18:18:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:19,041 INFO L495 AbstractCegarLoop]: Abstraction has 15811 states and 19989 transitions. [2023-12-16 18:18:19,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2023-12-16 18:18:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15811 states and 19989 transitions. [2023-12-16 18:18:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 18:18:19,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:19,042 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:19,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-16 18:18:19,245 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 [2023-12-16 18:18:19,245 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:19,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:19,245 INFO L85 PathProgramCache]: Analyzing trace with hash 204578369, now seen corresponding path program 1 times [2023-12-16 18:18:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823260901] [2023-12-16 18:18:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:19,246 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 [2023-12-16 18:18:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:19,247 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) [2023-12-16 18:18:19,249 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 (21)] Waiting until timeout for monitored process [2023-12-16 18:18:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:19,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:18:19,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:19,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:19,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823260901] [2023-12-16 18:18:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823260901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:19,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:18:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512667966] [2023-12-16 18:18:19,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:18:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:18:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:18:19,469 INFO L87 Difference]: Start difference. First operand 15811 states and 19989 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 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) [2023-12-16 18:18:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:19,716 INFO L93 Difference]: Finished difference Result 41472 states and 52346 transitions. [2023-12-16 18:18:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:18:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 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 63 [2023-12-16 18:18:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:19,744 INFO L225 Difference]: With dead ends: 41472 [2023-12-16 18:18:19,744 INFO L226 Difference]: Without dead ends: 25704 [2023-12-16 18:18:19,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:18:19,755 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 600 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:19,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 384 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:18:19,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25704 states. [2023-12-16 18:18:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25704 to 17848. [2023-12-16 18:18:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17848 states, 17847 states have (on average 1.246764162044041) internal successors, (22251), 17847 states have internal predecessors, (22251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17848 states to 17848 states and 22251 transitions. [2023-12-16 18:18:19,935 INFO L78 Accepts]: Start accepts. Automaton has 17848 states and 22251 transitions. Word has length 63 [2023-12-16 18:18:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:19,935 INFO L495 AbstractCegarLoop]: Abstraction has 17848 states and 22251 transitions. [2023-12-16 18:18:19,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 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) [2023-12-16 18:18:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 17848 states and 22251 transitions. [2023-12-16 18:18:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 18:18:19,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:19,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:19,948 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 (21)] Ended with exit code 0 [2023-12-16 18:18:20,139 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 [2023-12-16 18:18:20,139 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:20,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1126420505, now seen corresponding path program 1 times [2023-12-16 18:18:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:20,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731155631] [2023-12-16 18:18:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:20,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:18:20,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:20,145 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) [2023-12-16 18:18:20,145 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 [2023-12-16 18:18:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:20,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:18:20,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:20,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:20,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:20,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731155631] [2023-12-16 18:18:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731155631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:20,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:20,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:18:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166850390] [2023-12-16 18:18:20,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:18:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:18:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:18:20,406 INFO L87 Difference]: Start difference. First operand 17848 states and 22251 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:20,603 INFO L93 Difference]: Finished difference Result 42267 states and 52485 transitions. [2023-12-16 18:18:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:18:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 [2023-12-16 18:18:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:20,627 INFO L225 Difference]: With dead ends: 42267 [2023-12-16 18:18:20,628 INFO L226 Difference]: Without dead ends: 24514 [2023-12-16 18:18:20,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:18:20,643 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 578 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:20,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 359 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:18:20,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24514 states. [2023-12-16 18:18:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24514 to 18017. [2023-12-16 18:18:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18017 states, 18016 states have (on average 1.220415186500888) internal successors, (21987), 18016 states have internal predecessors, (21987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18017 states to 18017 states and 21987 transitions. [2023-12-16 18:18:20,862 INFO L78 Accepts]: Start accepts. Automaton has 18017 states and 21987 transitions. Word has length 64 [2023-12-16 18:18:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:20,863 INFO L495 AbstractCegarLoop]: Abstraction has 18017 states and 21987 transitions. [2023-12-16 18:18:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18017 states and 21987 transitions. [2023-12-16 18:18:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 18:18:20,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:20,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:20,871 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 [2023-12-16 18:18:21,067 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 [2023-12-16 18:18:21,067 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:21,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash 778337395, now seen corresponding path program 1 times [2023-12-16 18:18:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235879855] [2023-12-16 18:18:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:21,068 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 [2023-12-16 18:18:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:21,069 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) [2023-12-16 18:18:21,071 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 [2023-12-16 18:18:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:21,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:18:21,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 18:18:21,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:21,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235879855] [2023-12-16 18:18:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235879855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:21,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:21,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:18:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347504359] [2023-12-16 18:18:21,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:21,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:18:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:18:21,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:21,375 INFO L87 Difference]: Start difference. First operand 18017 states and 21987 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2023-12-16 18:18:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:21,462 INFO L93 Difference]: Finished difference Result 29671 states and 36483 transitions. [2023-12-16 18:18:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:21,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 65 [2023-12-16 18:18:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:21,491 INFO L225 Difference]: With dead ends: 29671 [2023-12-16 18:18:21,491 INFO L226 Difference]: Without dead ends: 24638 [2023-12-16 18:18:21,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:21,502 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 225 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:21,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 415 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24638 states. [2023-12-16 18:18:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24638 to 19603. [2023-12-16 18:18:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19603 states, 19602 states have (on average 1.2143148658300174) internal successors, (23803), 19602 states have internal predecessors, (23803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19603 states to 19603 states and 23803 transitions. [2023-12-16 18:18:21,722 INFO L78 Accepts]: Start accepts. Automaton has 19603 states and 23803 transitions. Word has length 65 [2023-12-16 18:18:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:21,722 INFO L495 AbstractCegarLoop]: Abstraction has 19603 states and 23803 transitions. [2023-12-16 18:18:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2023-12-16 18:18:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19603 states and 23803 transitions. [2023-12-16 18:18:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 18:18:21,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:21,725 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:21,752 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 [2023-12-16 18:18:21,927 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 [2023-12-16 18:18:21,927 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:21,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1264981520, now seen corresponding path program 1 times [2023-12-16 18:18:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825055968] [2023-12-16 18:18:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:21,929 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 [2023-12-16 18:18:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:21,930 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) [2023-12-16 18:18:21,956 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 [2023-12-16 18:18:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:21,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:18:21,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:18:22,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:22,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825055968] [2023-12-16 18:18:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825055968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:22,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:22,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:18:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148160267] [2023-12-16 18:18:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:18:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:18:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:22,180 INFO L87 Difference]: Start difference. First operand 19603 states and 23803 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2023-12-16 18:18:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:22,266 INFO L93 Difference]: Finished difference Result 32251 states and 39538 transitions. [2023-12-16 18:18:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 66 [2023-12-16 18:18:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:22,294 INFO L225 Difference]: With dead ends: 32251 [2023-12-16 18:18:22,294 INFO L226 Difference]: Without dead ends: 26390 [2023-12-16 18:18:22,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:22,305 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 185 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:22,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 507 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26390 states. [2023-12-16 18:18:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26390 to 23411. [2023-12-16 18:18:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23411 states, 23410 states have (on average 1.207261853908586) internal successors, (28262), 23410 states have internal predecessors, (28262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23411 states to 23411 states and 28262 transitions. [2023-12-16 18:18:22,515 INFO L78 Accepts]: Start accepts. Automaton has 23411 states and 28262 transitions. Word has length 66 [2023-12-16 18:18:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:22,515 INFO L495 AbstractCegarLoop]: Abstraction has 23411 states and 28262 transitions. [2023-12-16 18:18:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2023-12-16 18:18:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 23411 states and 28262 transitions. [2023-12-16 18:18:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 18:18:22,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:22,517 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:22,524 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 [2023-12-16 18:18:22,719 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 [2023-12-16 18:18:22,719 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1631977017, now seen corresponding path program 1 times [2023-12-16 18:18:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536683571] [2023-12-16 18:18:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:22,720 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 [2023-12-16 18:18:22,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:22,724 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) [2023-12-16 18:18:22,726 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 [2023-12-16 18:18:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:22,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:18:22,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:18:22,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:22,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:22,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536683571] [2023-12-16 18:18:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536683571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:22,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:22,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:18:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143723327] [2023-12-16 18:18:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:22,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:18:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:18:22,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:22,965 INFO L87 Difference]: Start difference. First operand 23411 states and 28262 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-12-16 18:18:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:23,071 INFO L93 Difference]: Finished difference Result 39982 states and 48834 transitions. [2023-12-16 18:18:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:18:23,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 66 [2023-12-16 18:18:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:23,099 INFO L225 Difference]: With dead ends: 39982 [2023-12-16 18:18:23,099 INFO L226 Difference]: Without dead ends: 27580 [2023-12-16 18:18:23,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:18:23,112 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 184 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:23,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 483 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27580 states. [2023-12-16 18:18:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27580 to 23036. [2023-12-16 18:18:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23036 states, 23035 states have (on average 1.1933579335793358) internal successors, (27489), 23035 states have internal predecessors, (27489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23036 states to 23036 states and 27489 transitions. [2023-12-16 18:18:23,371 INFO L78 Accepts]: Start accepts. Automaton has 23036 states and 27489 transitions. Word has length 66 [2023-12-16 18:18:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:23,371 INFO L495 AbstractCegarLoop]: Abstraction has 23036 states and 27489 transitions. [2023-12-16 18:18:23,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-12-16 18:18:23,371 INFO L276 IsEmpty]: Start isEmpty. Operand 23036 states and 27489 transitions. [2023-12-16 18:18:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 18:18:23,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:23,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:23,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 18:18:23,575 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 [2023-12-16 18:18:23,576 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:23,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -977180283, now seen corresponding path program 1 times [2023-12-16 18:18:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:23,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769394642] [2023-12-16 18:18:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:23,577 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 [2023-12-16 18:18:23,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:23,578 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) [2023-12-16 18:18:23,580 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 [2023-12-16 18:18:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:23,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:18:23,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:23,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:23,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769394642] [2023-12-16 18:18:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769394642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:23,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:23,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:18:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308210510] [2023-12-16 18:18:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:18:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:18:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:23,706 INFO L87 Difference]: Start difference. First operand 23036 states and 27489 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:23,761 INFO L93 Difference]: Finished difference Result 31022 states and 37078 transitions. [2023-12-16 18:18:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:18:23,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-16 18:18:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:23,780 INFO L225 Difference]: With dead ends: 31022 [2023-12-16 18:18:23,780 INFO L226 Difference]: Without dead ends: 21567 [2023-12-16 18:18:23,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:23,790 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 44 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:23,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 215 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21567 states. [2023-12-16 18:18:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21567 to 21565. [2023-12-16 18:18:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21565 states, 21564 states have (on average 1.183453904655908) internal successors, (25520), 21564 states have internal predecessors, (25520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21565 states to 21565 states and 25520 transitions. [2023-12-16 18:18:23,996 INFO L78 Accepts]: Start accepts. Automaton has 21565 states and 25520 transitions. Word has length 71 [2023-12-16 18:18:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:23,996 INFO L495 AbstractCegarLoop]: Abstraction has 21565 states and 25520 transitions. [2023-12-16 18:18:23,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 21565 states and 25520 transitions. [2023-12-16 18:18:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 18:18:23,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:23,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:24,000 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 [2023-12-16 18:18:24,200 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 [2023-12-16 18:18:24,201 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:24,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2100521282, now seen corresponding path program 1 times [2023-12-16 18:18:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:24,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612909576] [2023-12-16 18:18:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:24,201 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 [2023-12-16 18:18:24,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:24,203 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) [2023-12-16 18:18:24,204 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 [2023-12-16 18:18:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:24,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:18:24,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:24,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:18:24,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:24,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612909576] [2023-12-16 18:18:24,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612909576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:18:24,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:18:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:18:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232949888] [2023-12-16 18:18:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:18:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:18:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:18:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:24,288 INFO L87 Difference]: Start difference. First operand 21565 states and 25520 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:24,331 INFO L93 Difference]: Finished difference Result 23831 states and 28084 transitions. [2023-12-16 18:18:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:18:24,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-16 18:18:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:24,346 INFO L225 Difference]: With dead ends: 23831 [2023-12-16 18:18:24,346 INFO L226 Difference]: Without dead ends: 16439 [2023-12-16 18:18:24,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:18:24,354 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 51 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:24,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 232 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:18:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16439 states. [2023-12-16 18:18:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16439 to 16437. [2023-12-16 18:18:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16437 states, 16436 states have (on average 1.1657337551715745) internal successors, (19160), 16436 states have internal predecessors, (19160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16437 states to 16437 states and 19160 transitions. [2023-12-16 18:18:24,519 INFO L78 Accepts]: Start accepts. Automaton has 16437 states and 19160 transitions. Word has length 71 [2023-12-16 18:18:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:24,519 INFO L495 AbstractCegarLoop]: Abstraction has 16437 states and 19160 transitions. [2023-12-16 18:18:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 16437 states and 19160 transitions. [2023-12-16 18:18:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 18:18:24,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:24,521 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:18:24,523 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 [2023-12-16 18:18:24,723 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 [2023-12-16 18:18:24,724 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:24,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1800747589, now seen corresponding path program 1 times [2023-12-16 18:18:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:24,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259732836] [2023-12-16 18:18:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:24,725 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 [2023-12-16 18:18:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:24,726 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) [2023-12-16 18:18:24,727 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 [2023-12-16 18:18:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:24,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 18:18:24,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:26,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:26,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259732836] [2023-12-16 18:18:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259732836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:26,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2023-12-16 18:18:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673638925] [2023-12-16 18:18:26,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:26,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 18:18:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 18:18:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 18:18:26,963 INFO L87 Difference]: Start difference. First operand 16437 states and 19160 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:50,702 INFO L93 Difference]: Finished difference Result 111813 states and 129816 transitions. [2023-12-16 18:18:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 270 states. [2023-12-16 18:18:50,702 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 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 72 [2023-12-16 18:18:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:50,799 INFO L225 Difference]: With dead ends: 111813 [2023-12-16 18:18:50,800 INFO L226 Difference]: Without dead ends: 97315 [2023-12-16 18:18:50,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37162 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=12971, Invalid=72585, Unknown=0, NotChecked=0, Total=85556 [2023-12-16 18:18:50,838 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 4992 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 5771 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 8839 SdHoareTripleChecker+Invalid, 5921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 5771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:50,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 8839 Invalid, 5921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 5771 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-16 18:18:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97315 states. [2023-12-16 18:18:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97315 to 31147. [2023-12-16 18:18:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31147 states, 31146 states have (on average 1.1645797213125282) internal successors, (36272), 31146 states have internal predecessors, (36272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31147 states to 31147 states and 36272 transitions. [2023-12-16 18:18:51,372 INFO L78 Accepts]: Start accepts. Automaton has 31147 states and 36272 transitions. Word has length 72 [2023-12-16 18:18:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:51,372 INFO L495 AbstractCegarLoop]: Abstraction has 31147 states and 36272 transitions. [2023-12-16 18:18:51,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 31147 states and 36272 transitions. [2023-12-16 18:18:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 18:18:51,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:51,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-16 18:18:51,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-16 18:18:51,582 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 [2023-12-16 18:18:51,582 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:51,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1046924911, now seen corresponding path program 1 times [2023-12-16 18:18:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:51,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337780361] [2023-12-16 18:18:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:51,583 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 [2023-12-16 18:18:51,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:51,584 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) [2023-12-16 18:18:51,586 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 [2023-12-16 18:18:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:51,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:18:51,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:18:52,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:18:52,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:52,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337780361] [2023-12-16 18:18:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337780361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:52,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:52,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 18:18:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065484776] [2023-12-16 18:18:52,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:52,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 18:18:52,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 18:18:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 18:18:52,377 INFO L87 Difference]: Start difference. First operand 31147 states and 36272 transitions. Second operand has 18 states, 18 states have (on average 11.11111111111111) internal successors, (200), 17 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:55,188 INFO L93 Difference]: Finished difference Result 58117 states and 67094 transitions. [2023-12-16 18:18:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 18:18:55,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.11111111111111) internal successors, (200), 17 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-16 18:18:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:55,229 INFO L225 Difference]: With dead ends: 58117 [2023-12-16 18:18:55,229 INFO L226 Difference]: Without dead ends: 46090 [2023-12-16 18:18:55,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1019, Invalid=2763, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 18:18:55,245 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1920 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:55,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 1382 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 18:18:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46090 states. [2023-12-16 18:18:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46090 to 26187. [2023-12-16 18:18:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26187 states, 26186 states have (on average 1.1589017032001834) internal successors, (30347), 26186 states have internal predecessors, (30347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26187 states to 26187 states and 30347 transitions. [2023-12-16 18:18:55,549 INFO L78 Accepts]: Start accepts. Automaton has 26187 states and 30347 transitions. Word has length 118 [2023-12-16 18:18:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:55,549 INFO L495 AbstractCegarLoop]: Abstraction has 26187 states and 30347 transitions. [2023-12-16 18:18:55,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.11111111111111) internal successors, (200), 17 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26187 states and 30347 transitions. [2023-12-16 18:18:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 18:18:55,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:55,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-16 18:18:55,561 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 [2023-12-16 18:18:55,758 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 [2023-12-16 18:18:55,759 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:55,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1683486826, now seen corresponding path program 1 times [2023-12-16 18:18:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94759757] [2023-12-16 18:18:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:55,759 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 [2023-12-16 18:18:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:55,760 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) [2023-12-16 18:18:55,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-16 18:18:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:55,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:18:55,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:56,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:56,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94759757] [2023-12-16 18:18:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94759757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:56,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:56,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:18:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102993568] [2023-12-16 18:18:56,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:56,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:18:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:18:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:18:56,814 INFO L87 Difference]: Start difference. First operand 26187 states and 30347 transitions. Second operand has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:59,472 INFO L93 Difference]: Finished difference Result 56166 states and 64797 transitions. [2023-12-16 18:18:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 18:18:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-16 18:18:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:59,517 INFO L225 Difference]: With dead ends: 56166 [2023-12-16 18:18:59,517 INFO L226 Difference]: Without dead ends: 48553 [2023-12-16 18:18:59,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=757, Invalid=3025, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 18:18:59,531 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2078 mSDsluCounter, 4913 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 5248 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 5248 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 18:18:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48553 states. [2023-12-16 18:18:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48553 to 41365. [2023-12-16 18:18:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41365 states, 41364 states have (on average 1.153974470554105) internal successors, (47733), 41364 states have internal predecessors, (47733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41365 states to 41365 states and 47733 transitions. [2023-12-16 18:18:59,930 INFO L78 Accepts]: Start accepts. Automaton has 41365 states and 47733 transitions. Word has length 118 [2023-12-16 18:18:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:59,931 INFO L495 AbstractCegarLoop]: Abstraction has 41365 states and 47733 transitions. [2023-12-16 18:18:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 41365 states and 47733 transitions. [2023-12-16 18:18:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 18:18:59,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:59,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-16 18:18:59,943 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 [2023-12-16 18:19:00,141 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 [2023-12-16 18:19:00,141 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:19:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:19:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -815671498, now seen corresponding path program 2 times [2023-12-16 18:19:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:19:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796369014] [2023-12-16 18:19:00,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:19:00,142 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 [2023-12-16 18:19:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:19:00,143 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) [2023-12-16 18:19:00,145 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 [2023-12-16 18:19:00,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 18:19:00,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:19:00,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 18:19:00,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:19:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 31 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:19:00,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:19:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:19:01,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:19:01,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796369014] [2023-12-16 18:19:01,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796369014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:19:01,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:19:01,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-12-16 18:19:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36301785] [2023-12-16 18:19:01,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:19:01,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 18:19:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:19:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 18:19:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-16 18:19:01,010 INFO L87 Difference]: Start difference. First operand 41365 states and 47733 transitions. Second operand has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:19:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:19:02,278 INFO L93 Difference]: Finished difference Result 65667 states and 75712 transitions. [2023-12-16 18:19:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 18:19:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-16 18:19:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:19:02,317 INFO L225 Difference]: With dead ends: 65667 [2023-12-16 18:19:02,317 INFO L226 Difference]: Without dead ends: 47453 [2023-12-16 18:19:02,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=2232, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 18:19:02,331 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1700 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:19:02,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 5149 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:19:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47453 states. [2023-12-16 18:19:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47453 to 39263. [2023-12-16 18:19:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39263 states, 39262 states have (on average 1.1523865315062911) internal successors, (45245), 39262 states have internal predecessors, (45245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:19:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39263 states to 39263 states and 45245 transitions. [2023-12-16 18:19:02,677 INFO L78 Accepts]: Start accepts. Automaton has 39263 states and 45245 transitions. Word has length 118 [2023-12-16 18:19:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:19:02,678 INFO L495 AbstractCegarLoop]: Abstraction has 39263 states and 45245 transitions. [2023-12-16 18:19:02,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:19:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 39263 states and 45245 transitions. [2023-12-16 18:19:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-16 18:19:02,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:19:02,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-16 18:19:02,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-16 18:19:02,888 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 [2023-12-16 18:19:02,888 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:19:02,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:19:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2032821529, now seen corresponding path program 1 times [2023-12-16 18:19:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:19:02,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602667439] [2023-12-16 18:19:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:19:02,889 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 [2023-12-16 18:19:02,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:19:02,890 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) [2023-12-16 18:19:02,895 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 [2023-12-16 18:19:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:19:02,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:19:02,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:19:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:19:03,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 18:19:03,828 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:19:03,831 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 (32)] Ended with exit code 0 [2023-12-16 18:19:03,858 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 (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:19:03,858 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 [2023-12-16 18:19:04,031 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 [2023-12-16 18:19:04,031 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 119 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 18:19:04,034 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-16 18:19:04,036 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:19:04,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:19:04 BoogieIcfgContainer [2023-12-16 18:19:04,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:19:04,038 INFO L158 Benchmark]: Toolchain (without parser) took 71976.44ms. Allocated memory was 199.2MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 151.6MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 859.0MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,038 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:19:04,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.48ms. Allocated memory is still 199.2MB. Free memory was 151.5MB in the beginning and 135.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.54ms. Allocated memory is still 199.2MB. Free memory was 135.2MB in the beginning and 132.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,038 INFO L158 Benchmark]: Boogie Preprocessor took 43.45ms. Allocated memory is still 199.2MB. Free memory was 132.8MB in the beginning and 130.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,038 INFO L158 Benchmark]: RCFGBuilder took 461.28ms. Allocated memory is still 199.2MB. Free memory was 130.1MB in the beginning and 104.5MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,039 INFO L158 Benchmark]: TraceAbstraction took 71187.04ms. Allocated memory was 199.2MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 103.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 810.8MB. Max. memory is 8.0GB. [2023-12-16 18:19:04,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.48ms. Allocated memory is still 199.2MB. Free memory was 151.5MB in the beginning and 135.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.54ms. Allocated memory is still 199.2MB. Free memory was 135.2MB in the beginning and 132.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.45ms. Allocated memory is still 199.2MB. Free memory was 132.8MB in the beginning and 130.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 461.28ms. Allocated memory is still 199.2MB. Free memory was 130.1MB in the beginning and 104.5MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 71187.04ms. Allocated memory was 199.2MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 103.9MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 810.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 214). Cancelled while NwaCegarLoop was analyzing trace of length 119 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.1s, OverallIterations: 31, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 46.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22911 SdHoareTripleChecker+Valid, 14.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22911 mSDsluCounter, 32981 SdHoareTripleChecker+Invalid, 12.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27861 mSDsCounter, 351 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13903 IncrementalHoareTripleChecker+Invalid, 14254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 351 mSolverCounterUnsat, 5120 mSDtfsCounter, 13903 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3325 GetRequests, 2548 SyntacticMatches, 0 SemanticMatches, 777 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46525 ImplicationChecksByTransitivity, 29.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41365occurred in iteration=29, InterpolantAutomatonStates: 712, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.4s AutomataMinimizationTime, 30 MinimizatonAttempts, 214912 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 1887 NumberOfCodeBlocks, 1887 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2708 ConstructedInterpolants, 446 QuantifiedInterpolants, 21764 SizeOfPredicates, 76 NumberOfNonLiveVariables, 3939 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 41 InterpolantComputations, 19 PerfectInterpolantSequences, 456/804 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown