/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/recursive-simple/fibo_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:09:22,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:09:22,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:09:22,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:09:22,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:09:22,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:09:22,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:09:22,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:09:22,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:09:22,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:09:22,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:09:22,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:09:22,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:09:22,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:09:22,891 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:09:22,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:09:22,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:09:22,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:09:22,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:09:22,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:09:22,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:09:22,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:09:22,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:09:22,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:09:22,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:09:22,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:09:22,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:09:22,896 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:09:22,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:09:22,898 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:09:22,898 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:09:23,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:09:23,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:09:23,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:09:23,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:09:23,114 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:09:23,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2023-12-25 06:09:24,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:09:24,328 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:09:24,329 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2023-12-25 06:09:24,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab570e01/9a1e4ad46ca34753a21f7816ebbb2fe4/FLAG77953e095 [2023-12-25 06:09:24,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab570e01/9a1e4ad46ca34753a21f7816ebbb2fe4 [2023-12-25 06:09:24,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:09:24,345 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:09:24,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:09:24,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:09:24,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:09:24,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c21839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24, skipping insertion in model container [2023-12-25 06:09:24,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,361 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:09:24,454 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_15-2.c[744,757] [2023-12-25 06:09:24,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:09:24,465 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:09:24,473 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_15-2.c[744,757] [2023-12-25 06:09:24,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:09:24,482 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:09:24,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24 WrapperNode [2023-12-25 06:09:24,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:09:24,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:09:24,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:09:24,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:09:24,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,501 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:09:24,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:09:24,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:09:24,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:09:24,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:09:24,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,516 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 06:09:24,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:09:24,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:09:24,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:09:24,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:09:24,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (1/1) ... [2023-12-25 06:09:24,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:09:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:09:24,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 06:09:24,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 06:09:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:09:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:09:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:09:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:09:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-12-25 06:09:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-12-25 06:09:24,608 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:09:24,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:09:24,684 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:09:24,702 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:09:24,702 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:09:24,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:09:24 BoogieIcfgContainer [2023-12-25 06:09:24,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:09:24,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:09:24,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:09:24,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:09:24,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:09:24" (1/3) ... [2023-12-25 06:09:24,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adb6a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:09:24, skipping insertion in model container [2023-12-25 06:09:24,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:09:24" (2/3) ... [2023-12-25 06:09:24,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adb6a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:09:24, skipping insertion in model container [2023-12-25 06:09:24,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:09:24" (3/3) ... [2023-12-25 06:09:24,707 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2023-12-25 06:09:24,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:09:24,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:09:24,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:09:24,749 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;@40d29a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:09:24,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:09:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:09:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:09:24,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:24,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:24,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:24,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash -735234106, now seen corresponding path program 1 times [2023-12-25 06:09:24,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:24,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848134845] [2023-12-25 06:09:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:09:24,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:24,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:24,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:24,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:09:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:24,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:09:24,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:09:24,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:09:24,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848134845] [2023-12-25 06:09:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848134845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:09:24,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:09:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:09:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623333422] [2023-12-25 06:09:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:09:24,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:09:24,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:09:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:09:24,900 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:09:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:24,953 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-25 06:09:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:09:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:09:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:24,959 INFO L225 Difference]: With dead ends: 24 [2023-12-25 06:09:24,959 INFO L226 Difference]: Without dead ends: 16 [2023-12-25 06:09:24,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:09:24,963 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:24,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:09:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-25 06:09:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-25 06:09:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:09:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:09:24,986 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-25 06:09:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:24,986 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:09:24,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:09:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:09:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:09:24,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:24,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:24,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:25,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:25,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:25,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -574078710, now seen corresponding path program 1 times [2023-12-25 06:09:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:25,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850573530] [2023-12-25 06:09:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:09:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:25,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:25,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:25,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 06:09:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:25,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:09:25,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:09:25,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:09:25,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:25,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850573530] [2023-12-25 06:09:25,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850573530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:09:25,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:09:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:09:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568555445] [2023-12-25 06:09:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:09:25,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:09:25,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:09:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:09:25,265 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:09:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:25,314 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-25 06:09:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:09:25,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:09:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:25,315 INFO L225 Difference]: With dead ends: 22 [2023-12-25 06:09:25,315 INFO L226 Difference]: Without dead ends: 18 [2023-12-25 06:09:25,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:09:25,317 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:25,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:09:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-25 06:09:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-12-25 06:09:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:09:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:09:25,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-25 06:09:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:25,322 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:09:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:09:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:09:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:09:25,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:25,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:25,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-25 06:09:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:25,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1482643974, now seen corresponding path program 1 times [2023-12-25 06:09:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053810173] [2023-12-25 06:09:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:09:25,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:25,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:25,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:25,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 06:09:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:25,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:09:25,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:09:25,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:09:25,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053810173] [2023-12-25 06:09:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053810173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:25,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:09:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942408894] [2023-12-25 06:09:25,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:25,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:09:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:09:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:09:25,810 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:09:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:25,917 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2023-12-25 06:09:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:09:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-25 06:09:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:25,919 INFO L225 Difference]: With dead ends: 26 [2023-12-25 06:09:25,919 INFO L226 Difference]: Without dead ends: 22 [2023-12-25 06:09:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:09:25,921 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:25,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-25 06:09:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-25 06:09:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-25 06:09:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-12-25 06:09:25,928 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 21 [2023-12-25 06:09:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:25,928 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-12-25 06:09:25,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:09:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-12-25 06:09:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:09:25,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:25,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:25,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:26,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:26,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:26,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1283424576, now seen corresponding path program 1 times [2023-12-25 06:09:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727058540] [2023-12-25 06:09:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:09:26,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:26,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:26,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:26,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 06:09:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:26,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:09:26,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:09:26,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:09:26,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727058540] [2023-12-25 06:09:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727058540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:26,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:09:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112802815] [2023-12-25 06:09:26,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:26,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:09:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:09:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:09:26,330 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:09:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:26,409 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-12-25 06:09:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:09:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-25 06:09:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:26,413 INFO L225 Difference]: With dead ends: 44 [2023-12-25 06:09:26,414 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:09:26,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:09:26,415 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:26,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:09:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:09:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:09:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2023-12-25 06:09:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2023-12-25 06:09:26,422 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 22 [2023-12-25 06:09:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:26,423 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 41 transitions. [2023-12-25 06:09:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:09:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 41 transitions. [2023-12-25 06:09:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:09:26,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:26,424 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:26,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:26,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:26,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:26,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash -129465146, now seen corresponding path program 2 times [2023-12-25 06:09:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432705593] [2023-12-25 06:09:26,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:26,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:26,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:26,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 06:09:26,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:26,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:26,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:09:26,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:09:26,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:09:27,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432705593] [2023-12-25 06:09:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432705593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:27,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:27,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:09:27,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444445809] [2023-12-25 06:09:27,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:27,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:09:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:09:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:09:27,016 INFO L87 Difference]: Start difference. First operand 26 states and 41 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:09:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:27,190 INFO L93 Difference]: Finished difference Result 59 states and 109 transitions. [2023-12-25 06:09:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:09:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2023-12-25 06:09:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:27,193 INFO L225 Difference]: With dead ends: 59 [2023-12-25 06:09:27,193 INFO L226 Difference]: Without dead ends: 35 [2023-12-25 06:09:27,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:09:27,194 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:27,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-25 06:09:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-25 06:09:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-25 06:09:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-12-25 06:09:27,200 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 33 [2023-12-25 06:09:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:27,200 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-12-25 06:09:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:09:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-12-25 06:09:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-25 06:09:27,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:27,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:27,210 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 (6)] Ended with exit code 0 [2023-12-25 06:09:27,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:27,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:27,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1440927676, now seen corresponding path program 2 times [2023-12-25 06:09:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865253961] [2023-12-25 06:09:27,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:27,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:27,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:27,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:27,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:09:27,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:27,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:27,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:09:27,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 06:09:27,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:09:27,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865253961] [2023-12-25 06:09:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865253961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:27,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:09:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218716236] [2023-12-25 06:09:27,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:09:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:09:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:09:27,670 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:09:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:27,775 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2023-12-25 06:09:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:09:27,775 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-25 06:09:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:27,781 INFO L225 Difference]: With dead ends: 66 [2023-12-25 06:09:27,782 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:09:27,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:09:27,785 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:27,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:09:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-12-25 06:09:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-25 06:09:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2023-12-25 06:09:27,793 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2023-12-25 06:09:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2023-12-25 06:09:27,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:09:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2023-12-25 06:09:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-25 06:09:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:27,795 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:27,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:27,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:27,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:27,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1149036726, now seen corresponding path program 3 times [2023-12-25 06:09:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892727715] [2023-12-25 06:09:28,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:28,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:28,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 06:09:28,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:09:28,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:28,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:09:28,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 180 proven. 5 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-25 06:09:28,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-25 06:09:28,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892727715] [2023-12-25 06:09:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892727715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:28,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-25 06:09:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939677083] [2023-12-25 06:09:28,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:09:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:09:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:09:28,471 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:09:28,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:28,570 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2023-12-25 06:09:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:09:28,571 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 82 [2023-12-25 06:09:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:28,572 INFO L225 Difference]: With dead ends: 65 [2023-12-25 06:09:28,572 INFO L226 Difference]: Without dead ends: 31 [2023-12-25 06:09:28,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:09:28,573 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:28,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:28,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-25 06:09:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-25 06:09:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 06:09:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-25 06:09:28,579 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 82 [2023-12-25 06:09:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:28,580 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-25 06:09:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:09:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-25 06:09:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 06:09:28,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:28,581 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:28,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:28,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:28,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1163688374, now seen corresponding path program 4 times [2023-12-25 06:09:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819756772] [2023-12-25 06:09:28,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:09:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:28,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:28,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 06:09:28,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:09:28,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:28,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:09:28,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 154 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-25 06:09:28,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 06:09:29,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819756772] [2023-12-25 06:09:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819756772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:29,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-25 06:09:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351719148] [2023-12-25 06:09:29,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:09:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:09:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:09:29,228 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:09:29,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:29,348 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-12-25 06:09:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:09:29,349 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 86 [2023-12-25 06:09:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:29,350 INFO L225 Difference]: With dead ends: 71 [2023-12-25 06:09:29,350 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:09:29,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:09:29,351 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:29,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:09:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-25 06:09:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-25 06:09:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-25 06:09:29,355 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 86 [2023-12-25 06:09:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:29,356 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-25 06:09:29,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:09:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-25 06:09:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 06:09:29,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:29,357 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:29,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:29,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:29,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1652042176, now seen corresponding path program 5 times [2023-12-25 06:09:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:29,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171548873] [2023-12-25 06:09:29,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:09:29,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:29,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:29,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:29,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 06:09:29,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-25 06:09:29,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:29,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:09:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 310 proven. 265 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-25 06:09:29,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 321 proven. 309 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-25 06:09:31,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171548873] [2023-12-25 06:09:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171548873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:31,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 23 [2023-12-25 06:09:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673078468] [2023-12-25 06:09:31,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:09:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:09:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:09:31,528 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:09:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:31,943 INFO L93 Difference]: Finished difference Result 98 states and 163 transitions. [2023-12-25 06:09:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:09:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 136 [2023-12-25 06:09:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:31,945 INFO L225 Difference]: With dead ends: 98 [2023-12-25 06:09:31,945 INFO L226 Difference]: Without dead ends: 61 [2023-12-25 06:09:31,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:09:31,946 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:31,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 135 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:09:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-25 06:09:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-12-25 06:09:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (29), 13 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-25 06:09:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-25 06:09:31,954 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 136 [2023-12-25 06:09:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:31,955 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-25 06:09:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:09:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-25 06:09:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 06:09:31,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:31,956 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:31,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:32,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:32,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1711998528, now seen corresponding path program 6 times [2023-12-25 06:09:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238161051] [2023-12-25 06:09:32,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:09:32,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:32,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:32,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:32,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 06:09:32,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-25 06:09:32,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:32,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:09:32,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 212 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-25 06:09:32,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 06:09:32,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:32,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238161051] [2023-12-25 06:09:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238161051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:32,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-25 06:09:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102198129] [2023-12-25 06:09:32,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:32,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:09:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:09:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:09:32,672 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:09:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:32,836 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-25 06:09:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:09:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) Word has length 98 [2023-12-25 06:09:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:32,837 INFO L225 Difference]: With dead ends: 55 [2023-12-25 06:09:32,837 INFO L226 Difference]: Without dead ends: 51 [2023-12-25 06:09:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:09:32,838 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:32,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 93 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:09:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-25 06:09:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-25 06:09:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (28), 13 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-25 06:09:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-25 06:09:32,844 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 98 [2023-12-25 06:09:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:32,844 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-25 06:09:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:09:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-25 06:09:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-25 06:09:32,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:32,845 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:32,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-25 06:09:33,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:33,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:33,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823686, now seen corresponding path program 7 times [2023-12-25 06:09:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189813084] [2023-12-25 06:09:33,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:09:33,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:33,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:33,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 06:09:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:33,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:09:33,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 492 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-12-25 06:09:33,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 532 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-25 06:09:33,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189813084] [2023-12-25 06:09:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189813084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:33,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-25 06:09:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699201549] [2023-12-25 06:09:33,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:09:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:09:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:09:33,846 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:09:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:34,070 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2023-12-25 06:09:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:09:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 161 [2023-12-25 06:09:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:34,071 INFO L225 Difference]: With dead ends: 119 [2023-12-25 06:09:34,071 INFO L226 Difference]: Without dead ends: 70 [2023-12-25 06:09:34,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:09:34,072 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:34,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 122 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:09:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-25 06:09:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-12-25 06:09:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (33), 15 states have call predecessors, (33), 12 states have call successors, (33) [2023-12-25 06:09:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-25 06:09:34,079 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 161 [2023-12-25 06:09:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:34,080 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-25 06:09:34,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:09:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-25 06:09:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-25 06:09:34,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:34,082 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:34,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:34,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:34,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:34,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 409879046, now seen corresponding path program 8 times [2023-12-25 06:09:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970023634] [2023-12-25 06:09:34,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:09:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:34,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:34,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:34,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:09:34,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:09:34,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:34,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:09:34,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1373 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-25 06:09:34,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1430 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2023-12-25 06:09:35,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970023634] [2023-12-25 06:09:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970023634] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:35,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:35,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-25 06:09:35,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161797126] [2023-12-25 06:09:35,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:35,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:09:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:09:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:09:35,465 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:09:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:35,772 INFO L93 Difference]: Finished difference Result 136 states and 256 transitions. [2023-12-25 06:09:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:09:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 325 [2023-12-25 06:09:35,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:35,774 INFO L225 Difference]: With dead ends: 136 [2023-12-25 06:09:35,774 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 06:09:35,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:09:35,775 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:35,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 177 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:09:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 06:09:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-25 06:09:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (34), 16 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-25 06:09:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-25 06:09:35,783 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 325 [2023-12-25 06:09:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:35,784 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-25 06:09:35,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:09:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-25 06:09:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-25 06:09:35,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:35,791 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:35,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:35,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:35,997 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:35,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash 48182618, now seen corresponding path program 9 times [2023-12-25 06:09:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:35,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638566611] [2023-12-25 06:09:35,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:35,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:35,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:36,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:36,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 06:09:36,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-25 06:09:36,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:36,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:09:36,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2708 refuted. 0 times theorem prover too weak. 15199 trivial. 0 not checked. [2023-12-25 06:09:36,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2785 refuted. 0 times theorem prover too weak. 15122 trivial. 0 not checked. [2023-12-25 06:09:37,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638566611] [2023-12-25 06:09:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638566611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:37,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-25 06:09:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504707676] [2023-12-25 06:09:37,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:37,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:09:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:09:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:09:38,000 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:09:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:38,431 INFO L93 Difference]: Finished difference Result 152 states and 274 transitions. [2023-12-25 06:09:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:09:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) Word has length 527 [2023-12-25 06:09:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:38,433 INFO L225 Difference]: With dead ends: 152 [2023-12-25 06:09:38,433 INFO L226 Difference]: Without dead ends: 90 [2023-12-25 06:09:38,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:09:38,435 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:38,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 198 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:09:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-25 06:09:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-12-25 06:09:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (31), 17 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-25 06:09:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-12-25 06:09:38,450 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 527 [2023-12-25 06:09:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:38,450 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-12-25 06:09:38,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:09:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-12-25 06:09:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-25 06:09:38,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:38,454 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:38,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:38,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:38,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash -979193692, now seen corresponding path program 10 times [2023-12-25 06:09:38,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:38,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607029187] [2023-12-25 06:09:38,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:09:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:38,668 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:38,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 06:09:38,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:09:38,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:38,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:09:38,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4035 refuted. 0 times theorem prover too weak. 27022 trivial. 0 not checked. [2023-12-25 06:09:39,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4135 refuted. 0 times theorem prover too weak. 26922 trivial. 0 not checked. [2023-12-25 06:09:40,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607029187] [2023-12-25 06:09:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607029187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:40,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:40,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:09:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249335197] [2023-12-25 06:09:40,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:40,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:09:40,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:09:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:09:40,871 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:09:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:41,346 INFO L93 Difference]: Finished difference Result 171 states and 313 transitions. [2023-12-25 06:09:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:09:41,347 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) Word has length 691 [2023-12-25 06:09:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:41,350 INFO L225 Difference]: With dead ends: 171 [2023-12-25 06:09:41,350 INFO L226 Difference]: Without dead ends: 102 [2023-12-25 06:09:41,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:09:41,352 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:41,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 268 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:09:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-25 06:09:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2023-12-25 06:09:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-25 06:09:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-25 06:09:41,368 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 691 [2023-12-25 06:09:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:41,369 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-25 06:09:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:09:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-25 06:09:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2023-12-25 06:09:41,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:41,377 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:41,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:41,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:41,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:41,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash -111943124, now seen corresponding path program 11 times [2023-12-25 06:09:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20926085] [2023-12-25 06:09:41,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:09:41,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:41,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:41,588 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:41,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:09:45,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 151 check-sat command(s) [2023-12-25 06:09:45,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:45,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:09:45,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2530 refuted. 0 times theorem prover too weak. 76151 trivial. 0 not checked. [2023-12-25 06:09:45,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2630 refuted. 0 times theorem prover too weak. 76051 trivial. 0 not checked. [2023-12-25 06:09:48,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20926085] [2023-12-25 06:09:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20926085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:48,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:09:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632723312] [2023-12-25 06:09:48,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:48,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:09:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:09:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:09:48,078 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-25 06:09:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:48,485 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2023-12-25 06:09:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:09:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 1120 [2023-12-25 06:09:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:48,487 INFO L225 Difference]: With dead ends: 109 [2023-12-25 06:09:48,487 INFO L226 Difference]: Without dead ends: 105 [2023-12-25 06:09:48,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2247 GetRequests, 2217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:09:48,488 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 102 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:48,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 263 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:09:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-25 06:09:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2023-12-25 06:09:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-25 06:09:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-25 06:09:48,494 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 1120 [2023-12-25 06:09:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:48,494 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-25 06:09:48,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-25 06:09:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-25 06:09:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-12-25 06:09:48,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:48,506 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:48,519 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 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:48,707 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:48,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -753267258, now seen corresponding path program 12 times [2023-12-25 06:09:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814627314] [2023-12-25 06:09:48,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:09:48,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:48,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:48,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:48,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 06:09:49,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-12-25 06:09:49,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:49,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:09:49,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7267 refuted. 0 times theorem prover too weak. 119145 trivial. 0 not checked. [2023-12-25 06:09:49,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7360 refuted. 0 times theorem prover too weak. 119052 trivial. 0 not checked. [2023-12-25 06:09:52,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:52,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814627314] [2023-12-25 06:09:52,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814627314] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:52,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:52,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:09:52,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098945187] [2023-12-25 06:09:52,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:52,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:09:52,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:09:52,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:09:52,934 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-25 06:09:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:54,758 INFO L93 Difference]: Finished difference Result 272 states and 397 transitions. [2023-12-25 06:09:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 06:09:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) Word has length 1385 [2023-12-25 06:09:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:54,761 INFO L225 Difference]: With dead ends: 272 [2023-12-25 06:09:54,762 INFO L226 Difference]: Without dead ends: 167 [2023-12-25 06:09:54,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2799 GetRequests, 2747 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=745, Invalid=2117, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 06:09:54,763 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 104 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:54,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 101 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:09:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-25 06:09:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2023-12-25 06:09:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (56), 23 states have call predecessors, (56), 19 states have call successors, (56) [2023-12-25 06:09:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2023-12-25 06:09:54,772 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 1385 [2023-12-25 06:09:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2023-12-25 06:09:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-25 06:09:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2023-12-25 06:09:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1916 [2023-12-25 06:09:54,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:54,792 INFO L195 NwaCegarLoop]: trace histogram [303, 303, 245, 151, 151, 151, 151, 151, 151, 94, 58, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:54,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:54,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:54,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:54,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1015944830, now seen corresponding path program 13 times [2023-12-25 06:09:54,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:54,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510723063] [2023-12-25 06:09:54,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:09:54,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:54,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:55,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:55,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:09:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:09:55,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:09:55,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 14847 refuted. 0 times theorem prover too weak. 230237 trivial. 0 not checked. [2023-12-25 06:09:55,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 15002 refuted. 0 times theorem prover too weak. 230082 trivial. 0 not checked. [2023-12-25 06:10:00,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:00,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510723063] [2023-12-25 06:10:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510723063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:00,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 27 [2023-12-25 06:10:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237217115] [2023-12-25 06:10:00,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 06:10:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 06:10:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-12-25 06:10:00,115 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-25 06:10:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:00,651 INFO L93 Difference]: Finished difference Result 256 states and 562 transitions. [2023-12-25 06:10:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 06:10:00,652 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 1915 [2023-12-25 06:10:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:00,654 INFO L225 Difference]: With dead ends: 256 [2023-12-25 06:10:00,654 INFO L226 Difference]: Without dead ends: 163 [2023-12-25 06:10:00,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3839 GetRequests, 3803 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:10:00,656 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 145 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:00,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 330 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:10:00,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-25 06:10:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 104. [2023-12-25 06:10:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 21 states have call successors, (21), 11 states have call predecessors, (21), 16 states have return successors, (49), 26 states have call predecessors, (49), 21 states have call successors, (49) [2023-12-25 06:10:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2023-12-25 06:10:00,668 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 1915 [2023-12-25 06:10:00,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:00,669 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2023-12-25 06:10:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-25 06:10:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2023-12-25 06:10:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2938 [2023-12-25 06:10:00,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:00,711 INFO L195 NwaCegarLoop]: trace histogram [465, 465, 376, 232, 232, 232, 232, 232, 232, 144, 89, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:00,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:00,950 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:00,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1900092778, now seen corresponding path program 14 times [2023-12-25 06:10:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919725034] [2023-12-25 06:10:00,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:10:00,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:00,969 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:10:01,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:10:01,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:10:01,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:02,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:10:02,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25120 refuted. 0 times theorem prover too weak. 554197 trivial. 0 not checked. [2023-12-25 06:10:02,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25307 refuted. 0 times theorem prover too weak. 554010 trivial. 0 not checked. [2023-12-25 06:10:08,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919725034] [2023-12-25 06:10:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919725034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:08,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27] total 29 [2023-12-25 06:10:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829531812] [2023-12-25 06:10:08,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:08,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 06:10:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 06:10:08,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:10:08,587 INFO L87 Difference]: Start difference. First operand 104 states and 137 transitions. Second operand has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-25 06:10:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:09,267 INFO L93 Difference]: Finished difference Result 249 states and 508 transitions. [2023-12-25 06:10:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 06:10:09,268 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) Word has length 2937 [2023-12-25 06:10:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:09,272 INFO L225 Difference]: With dead ends: 249 [2023-12-25 06:10:09,273 INFO L226 Difference]: Without dead ends: 147 [2023-12-25 06:10:09,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5884 GetRequests, 5845 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 06:10:09,275 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 141 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:09,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 391 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:10:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-25 06:10:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2023-12-25 06:10:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 23 states have call successors, (23), 12 states have call predecessors, (23), 17 states have return successors, (53), 28 states have call predecessors, (53), 23 states have call successors, (53) [2023-12-25 06:10:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2023-12-25 06:10:09,286 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 2937 [2023-12-25 06:10:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:09,287 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2023-12-25 06:10:09,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-25 06:10:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2023-12-25 06:10:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4755 [2023-12-25 06:10:09,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:09,419 INFO L195 NwaCegarLoop]: trace histogram [753, 753, 609, 376, 376, 376, 376, 376, 376, 233, 144, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:09,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:09,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:09,644 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:09,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:09,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2006228766, now seen corresponding path program 15 times [2023-12-25 06:10:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735388068] [2023-12-25 06:10:09,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:10:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:09,649 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:10:09,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:10:10,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2023-12-25 06:10:10,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:10,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:10:10,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 44844 refuted. 0 times theorem prover too weak. 1479148 trivial. 0 not checked. [2023-12-25 06:10:10,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 45066 refuted. 0 times theorem prover too weak. 1478926 trivial. 0 not checked. [2023-12-25 06:10:22,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735388068] [2023-12-25 06:10:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735388068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:22,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29] total 31 [2023-12-25 06:10:22,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644687548] [2023-12-25 06:10:22,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:10:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:10:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:10:22,593 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-25 06:10:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:23,476 INFO L93 Difference]: Finished difference Result 269 states and 564 transitions. [2023-12-25 06:10:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:10:23,477 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) Word has length 4754 [2023-12-25 06:10:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:23,481 INFO L225 Difference]: With dead ends: 269 [2023-12-25 06:10:23,481 INFO L226 Difference]: Without dead ends: 159 [2023-12-25 06:10:23,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9519 GetRequests, 9477 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:10:23,483 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 259 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:23,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 468 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:10:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-25 06:10:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2023-12-25 06:10:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 25 states have call successors, (25), 13 states have call predecessors, (25), 18 states have return successors, (57), 30 states have call predecessors, (57), 25 states have call successors, (57) [2023-12-25 06:10:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2023-12-25 06:10:23,493 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 4754 [2023-12-25 06:10:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:23,495 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-12-25 06:10:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-25 06:10:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2023-12-25 06:10:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9512 [2023-12-25 06:10:23,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:23,948 INFO L195 NwaCegarLoop]: trace histogram [1507, 1507, 1219, 753, 753, 753, 753, 753, 753, 466, 288, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:23,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:24,153 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 [2023-12-25 06:10:24,153 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:24,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1014541182, now seen corresponding path program 16 times [2023-12-25 06:10:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251859751] [2023-12-25 06:10:24,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:10:24,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:24,161 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) [2023-12-25 06:10:24,186 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 [2023-12-25 06:10:27,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:10:27,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:10:27,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 13291 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:10:27,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:10:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 9246 proven. 99528 refuted. 0 times theorem prover too weak. 6022065 trivial. 0 not checked. [2023-12-25 06:10:28,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:10:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 9246 proven. 99788 refuted. 0 times theorem prover too weak. 6021805 trivial. 0 not checked. [2023-12-25 06:10:54,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:10:54,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251859751] [2023-12-25 06:10:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251859751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:10:54,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:10:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 31] total 33 [2023-12-25 06:10:54,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248077844] [2023-12-25 06:10:54,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:10:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:10:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:10:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:10:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:10:54,629 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) [2023-12-25 06:10:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:10:55,622 INFO L93 Difference]: Finished difference Result 289 states and 622 transitions. [2023-12-25 06:10:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:10:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) Word has length 9511 [2023-12-25 06:10:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:10:55,627 INFO L225 Difference]: With dead ends: 289 [2023-12-25 06:10:55,627 INFO L226 Difference]: Without dead ends: 171 [2023-12-25 06:10:55,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19034 GetRequests, 18989 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:10:55,629 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 177 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:10:55,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 504 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:10:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-25 06:10:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2023-12-25 06:10:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 27 states have call successors, (27), 14 states have call predecessors, (27), 19 states have return successors, (61), 32 states have call predecessors, (61), 27 states have call successors, (61) [2023-12-25 06:10:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 170 transitions. [2023-12-25 06:10:55,642 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 170 transitions. Word has length 9511 [2023-12-25 06:10:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:10:55,644 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 170 transitions. [2023-12-25 06:10:55,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) [2023-12-25 06:10:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 170 transitions. [2023-12-25 06:10:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15392 [2023-12-25 06:10:57,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:10:57,340 INFO L195 NwaCegarLoop]: trace histogram [2439, 2439, 1973, 1219, 1219, 1219, 1219, 1219, 1219, 754, 466, 1, 1, 1, 1, 1, 1] [2023-12-25 06:10:57,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:10:57,553 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 [2023-12-25 06:10:57,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:10:57,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:10:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2108920650, now seen corresponding path program 17 times [2023-12-25 06:10:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:10:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756780630] [2023-12-25 06:10:57,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:10:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:10:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:10:57,567 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) [2023-12-25 06:10:57,600 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 [2023-12-25 06:22:46,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2128 check-sat command(s) [2023-12-25 06:22:46,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:46,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 21449 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-25 06:22:46,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16065055 backedges. 156153 proven. 189772 refuted. 0 times theorem prover too weak. 15719130 trivial. 0 not checked. [2023-12-25 06:22:47,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:23:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16065055 backedges. 156221 proven. 190674 refuted. 0 times theorem prover too weak. 15718160 trivial. 0 not checked. [2023-12-25 06:23:16,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:23:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756780630] [2023-12-25 06:23:16,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756780630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:23:16,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:23:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33] total 35 [2023-12-25 06:23:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256523097] [2023-12-25 06:23:16,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:23:16,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 06:23:16,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:23:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 06:23:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:23:16,967 INFO L87 Difference]: Start difference. First operand 128 states and 170 transitions. Second operand has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2023-12-25 06:23:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:23:17,940 INFO L93 Difference]: Finished difference Result 320 states and 773 transitions. [2023-12-25 06:23:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-25 06:23:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) Word has length 15391 [2023-12-25 06:23:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:23:17,947 INFO L225 Difference]: With dead ends: 320 [2023-12-25 06:23:17,947 INFO L226 Difference]: Without dead ends: 194 [2023-12-25 06:23:17,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30798 GetRequests, 30747 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=559, Invalid=2197, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 06:23:17,949 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 231 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:23:17,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 507 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:23:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-25 06:23:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 141. [2023-12-25 06:23:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (107), 37 states have call predecessors, (107), 31 states have call successors, (107) [2023-12-25 06:23:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 227 transitions. [2023-12-25 06:23:17,964 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 227 transitions. Word has length 15391 [2023-12-25 06:23:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:23:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 227 transitions. [2023-12-25 06:23:17,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2023-12-25 06:23:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 227 transitions. [2023-12-25 06:23:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12452 [2023-12-25 06:23:18,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:23:18,901 INFO L195 NwaCegarLoop]: trace histogram [1973, 1973, 1596, 986, 986, 986, 986, 986, 986, 610, 377, 1, 1, 1, 1, 1, 1] [2023-12-25 06:23:19,073 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 (22)] Ended with exit code 0 [2023-12-25 06:23:19,128 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 [2023-12-25 06:23:19,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:23:19,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:23:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1937938396, now seen corresponding path program 18 times [2023-12-25 06:23:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:23:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480023174] [2023-12-25 06:23:19,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:23:19,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:23:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:23:19,139 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) [2023-12-25 06:23:19,140 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 Received shutdown request... [2023-12-25 06:24:00,497 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 [2023-12-25 06:24:00,501 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 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:24:01,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 06:24:01,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 06:24:01,556 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:24:01,651 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 [2023-12-25 06:24:01,757 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 [2023-12-25 06:24:01,757 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 12452 with TraceHistMax 1973,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1480023174] and IpTcStrategyModuleCvc4 [1037772470]. [2023-12-25 06:24:01,761 INFO L445 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1] [2023-12-25 06:24:01,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:24:01,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:24:01 BoogieIcfgContainer [2023-12-25 06:24:01,765 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:24:01,765 INFO L158 Benchmark]: Toolchain (without parser) took 877420.84ms. Allocated memory was 261.1MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 218.7MB in the beginning and 915.9MB in the end (delta: -697.3MB). Peak memory consumption was 515.4MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,765 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 217.1MB. Free memory is still 167.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:24:01,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.33ms. Allocated memory is still 261.1MB. Free memory was 218.7MB in the beginning and 207.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.52ms. Allocated memory is still 261.1MB. Free memory was 207.7MB in the beginning and 206.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,766 INFO L158 Benchmark]: Boogie Preprocessor took 19.26ms. Allocated memory is still 261.1MB. Free memory was 206.1MB in the beginning and 204.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,766 INFO L158 Benchmark]: RCFGBuilder took 180.59ms. Allocated memory is still 261.1MB. Free memory was 204.5MB in the beginning and 193.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,766 INFO L158 Benchmark]: TraceAbstraction took 877061.30ms. Allocated memory was 261.1MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 192.5MB in the beginning and 915.9MB in the end (delta: -723.5MB). Peak memory consumption was 489.2MB. Max. memory is 8.0GB. [2023-12-25 06:24:01,767 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 217.1MB. Free memory is still 167.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 137.33ms. Allocated memory is still 261.1MB. Free memory was 218.7MB in the beginning and 207.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.52ms. Allocated memory is still 261.1MB. Free memory was 207.7MB in the beginning and 206.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.26ms. Allocated memory is still 261.1MB. Free memory was 206.1MB in the beginning and 204.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 180.59ms. Allocated memory is still 261.1MB. Free memory was 204.5MB in the beginning and 193.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 877061.30ms. Allocated memory was 261.1MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 192.5MB in the beginning and 915.9MB in the end (delta: -723.5MB). Peak memory consumption was 489.2MB. 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: 29]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 29). Cancelled while NwaCegarLoop was analyzing trace of length 12452 with TraceHistMax 1973,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1480023174] and IpTcStrategyModuleCvc4 [1037772470]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 877.0s, OverallIterations: 22, TraceHistogramMax: 2439, PathProgramHistogramMax: 18, EmptinessCheckTime: 3.3s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1914 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1686 mSDsluCounter, 3901 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3312 mSDsCounter, 2727 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12429 IncrementalHoareTripleChecker+Invalid, 15156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2727 mSolverCounterUnsat, 589 mSDtfsCounter, 12429 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78618 GetRequests, 78088 SyntacticMatches, 7 SemanticMatches, 523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=21, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 427 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.5s SsaConstructionTime, 716.4s SatisfiabilityAnalysisTime, 97.1s InterpolantComputationTime, 39249 NumberOfCodeBlocks, 33342 NumberOfCodeBlocksAsserted, 2446 NumberOfCheckSat, 78439 ConstructedInterpolants, 0 QuantifiedInterpolants, 85430 SizeOfPredicates, 158 NumberOfNonLiveVariables, 46775 ConjunctsInSsa, 357 ConjunctsInUnsatCore, 40 InterpolantComputations, 2 PerfectInterpolantSequences, 48867103/49655820 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