/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/hardness-nfm22/hardness_codestructure_dependencies_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 20:08:32,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 20:08:32,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 20:08:32,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 20:08:32,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 20:08:32,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 20:08:32,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 20:08:32,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 20:08:32,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 20:08:32,726 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 20:08:32,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 20:08:32,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 20:08:32,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 20:08:32,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 20:08:32,728 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 20:08:32,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 20:08:32,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 20:08:32,729 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 20:08:32,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 20:08:32,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 20:08:32,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 20:08:32,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 20:08:32,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 20:08:32,730 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 20:08:32,730 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 20:08:32,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 20:08:32,731 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 20:08:32,731 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 20:08:32,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 20:08:32,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 20:08:32,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 20:08:32,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 20:08:32,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 20:08:32,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 20:08:32,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:08:32,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 20:08:32,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 20:08:32,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 20:08:32,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 20:08:32,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 20:08:32,734 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 20:08:32,734 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 20:08:32,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 20:08:32,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 20:08:32,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 20:08:32,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 20:08:32,909 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 20:08:32,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-65.i [2023-12-22 20:08:33,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 20:08:34,090 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 20:08:34,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-65.i [2023-12-22 20:08:34,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c164c61/e4b22689c93d44b2a81e0d28b74f7968/FLAGf3af52a9c [2023-12-22 20:08:34,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3c164c61/e4b22689c93d44b2a81e0d28b74f7968 [2023-12-22 20:08:34,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 20:08:34,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 20:08:34,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 20:08:34,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 20:08:34,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 20:08:34,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d760a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34, skipping insertion in model container [2023-12-22 20:08:34,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 20:08:34,258 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-65.i[919,932] [2023-12-22 20:08:34,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:08:34,312 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 20:08:34,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-65.i[919,932] [2023-12-22 20:08:34,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:08:34,351 INFO L206 MainTranslator]: Completed translation [2023-12-22 20:08:34,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34 WrapperNode [2023-12-22 20:08:34,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 20:08:34,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 20:08:34,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 20:08:34,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 20:08:34,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,405 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-12-22 20:08:34,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 20:08:34,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 20:08:34,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 20:08:34,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 20:08:34,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,427 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 20:08:34,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 20:08:34,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 20:08:34,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 20:08:34,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 20:08:34,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (1/1) ... [2023-12-22 20:08:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:08:34,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 20:08:34,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 20:08:34,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 20:08:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 20:08:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 20:08:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 20:08:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 20:08:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 20:08:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 20:08:34,544 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 20:08:34,546 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 20:08:35,567 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 20:08:35,599 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 20:08:35,599 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 20:08:35,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:35 BoogieIcfgContainer [2023-12-22 20:08:35,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 20:08:35,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 20:08:35,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 20:08:35,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 20:08:35,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:08:34" (1/3) ... [2023-12-22 20:08:35,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4714dc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:35, skipping insertion in model container [2023-12-22 20:08:35,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:34" (2/3) ... [2023-12-22 20:08:35,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4714dc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:35, skipping insertion in model container [2023-12-22 20:08:35,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:35" (3/3) ... [2023-12-22 20:08:35,605 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-65.i [2023-12-22 20:08:35,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 20:08:35,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 20:08:35,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 20:08:35,655 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;@91bef0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 20:08:35,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 20:08:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 31 states have internal predecessors, (43), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-22 20:08:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 20:08:35,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:35,670 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:35,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:35,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 234660073, now seen corresponding path program 1 times [2023-12-22 20:08:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332743512] [2023-12-22 20:08:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:35,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:35,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:35,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:35,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 20:08:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:35,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 20:08:35,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:08:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-22 20:08:35,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:08:35,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:08:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332743512] [2023-12-22 20:08:35,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332743512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:08:35,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:08:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 20:08:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550913907] [2023-12-22 20:08:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:08:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 20:08:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:08:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 20:08:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 20:08:36,017 INFO L87 Difference]: Start difference. First operand has 51 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 31 states have internal predecessors, (43), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-22 20:08:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:08:36,691 INFO L93 Difference]: Finished difference Result 97 states and 170 transitions. [2023-12-22 20:08:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 20:08:36,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2023-12-22 20:08:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:08:36,721 INFO L225 Difference]: With dead ends: 97 [2023-12-22 20:08:36,721 INFO L226 Difference]: Without dead ends: 47 [2023-12-22 20:08:36,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 20:08:36,726 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 20:08:36,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 20:08:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-22 20:08:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-22 20:08:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-22 20:08:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2023-12-22 20:08:36,782 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 112 [2023-12-22 20:08:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:08:36,783 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2023-12-22 20:08:36,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-22 20:08:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2023-12-22 20:08:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 20:08:36,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:36,787 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:36,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 20:08:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:36,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:36,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 811307117, now seen corresponding path program 1 times [2023-12-22 20:08:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488158844] [2023-12-22 20:08:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:36,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:36,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:36,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 20:08:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:37,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 20:08:37,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:08:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-22 20:08:38,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:08:38,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:08:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488158844] [2023-12-22 20:08:38,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488158844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:08:38,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:08:38,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 20:08:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646516817] [2023-12-22 20:08:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:08:38,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 20:08:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:08:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 20:08:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 20:08:38,443 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:39,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:08:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:08:40,652 INFO L93 Difference]: Finished difference Result 140 states and 203 transitions. [2023-12-22 20:08:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 20:08:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 112 [2023-12-22 20:08:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:08:40,672 INFO L225 Difference]: With dead ends: 140 [2023-12-22 20:08:40,672 INFO L226 Difference]: Without dead ends: 94 [2023-12-22 20:08:40,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 20:08:40,673 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 30 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 20:08:40,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 183 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 20:08:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-22 20:08:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-22 20:08:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-22 20:08:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2023-12-22 20:08:40,691 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 112 [2023-12-22 20:08:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:08:40,692 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2023-12-22 20:08:40,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2023-12-22 20:08:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 20:08:40,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:40,694 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:40,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 20:08:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:40,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:40,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1204334127, now seen corresponding path program 1 times [2023-12-22 20:08:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:40,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524251477] [2023-12-22 20:08:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:40,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:40,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:40,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 20:08:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:41,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 20:08:41,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:08:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-22 20:08:41,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:08:41,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:08:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524251477] [2023-12-22 20:08:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524251477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:08:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:08:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 20:08:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564668031] [2023-12-22 20:08:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:08:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 20:08:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:08:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 20:08:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 20:08:41,255 INFO L87 Difference]: Start difference. First operand 81 states and 119 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:08:42,088 INFO L93 Difference]: Finished difference Result 173 states and 253 transitions. [2023-12-22 20:08:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 20:08:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 112 [2023-12-22 20:08:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:08:42,099 INFO L225 Difference]: With dead ends: 173 [2023-12-22 20:08:42,099 INFO L226 Difference]: Without dead ends: 127 [2023-12-22 20:08:42,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 20:08:42,101 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 20:08:42,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 20:08:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-22 20:08:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-12-22 20:08:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 67 states have internal predecessors, (76), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-22 20:08:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 184 transitions. [2023-12-22 20:08:42,148 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 184 transitions. Word has length 112 [2023-12-22 20:08:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:08:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 184 transitions. [2023-12-22 20:08:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 184 transitions. [2023-12-22 20:08:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 20:08:42,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:42,156 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 20:08:42,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:42,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:42,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1202487085, now seen corresponding path program 1 times [2023-12-22 20:08:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209213009] [2023-12-22 20:08:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:42,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:42,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:42,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 20:08:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:42,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 20:08:42,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:08:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 33 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-22 20:08:42,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 20:08:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-22 20:08:42,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:08:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209213009] [2023-12-22 20:08:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209213009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 20:08:42,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 20:08:42,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-22 20:08:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123349052] [2023-12-22 20:08:42,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 20:08:42,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 20:08:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:08:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 20:08:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-22 20:08:42,884 INFO L87 Difference]: Start difference. First operand 125 states and 184 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-22 20:08:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:08:44,160 INFO L93 Difference]: Finished difference Result 191 states and 268 transitions. [2023-12-22 20:08:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 20:08:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 112 [2023-12-22 20:08:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:08:44,164 INFO L225 Difference]: With dead ends: 191 [2023-12-22 20:08:44,164 INFO L226 Difference]: Without dead ends: 145 [2023-12-22 20:08:44,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-22 20:08:44,165 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 70 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 20:08:44,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 113 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 20:08:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-22 20:08:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2023-12-22 20:08:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-22 20:08:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 124 transitions. [2023-12-22 20:08:44,199 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 124 transitions. Word has length 112 [2023-12-22 20:08:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:08:44,199 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 124 transitions. [2023-12-22 20:08:44,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-22 20:08:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 124 transitions. [2023-12-22 20:08:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 20:08:44,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:44,202 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:44,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 20:08:44,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:44,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:44,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:44,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1329967297, now seen corresponding path program 1 times [2023-12-22 20:08:44,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204452917] [2023-12-22 20:08:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:44,412 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 [2023-12-22 20:08:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:44,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:44,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 20:08:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:44,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 20:08:44,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:08:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-22 20:08:44,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:08:44,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:08:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204452917] [2023-12-22 20:08:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204452917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:08:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:08:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 20:08:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371772008] [2023-12-22 20:08:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:08:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 20:08:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:08:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 20:08:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 20:08:44,654 INFO L87 Difference]: Start difference. First operand 89 states and 124 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:08:45,684 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2023-12-22 20:08:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 20:08:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 113 [2023-12-22 20:08:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:08:45,686 INFO L225 Difference]: With dead ends: 161 [2023-12-22 20:08:45,686 INFO L226 Difference]: Without dead ends: 111 [2023-12-22 20:08:45,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-12-22 20:08:45,687 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 84 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 20:08:45,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 178 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 20:08:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-22 20:08:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2023-12-22 20:08:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-22 20:08:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2023-12-22 20:08:45,702 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 113 [2023-12-22 20:08:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:08:45,702 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2023-12-22 20:08:45,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:08:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2023-12-22 20:08:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 20:08:45,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:08:45,703 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:08:45,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 20:08:45,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:45,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:08:45,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:08:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1329907715, now seen corresponding path program 1 times [2023-12-22 20:08:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:08:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341368247] [2023-12-22 20:08:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:08:45,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:08:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:08:45,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:08:45,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 20:08:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:08:46,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 20:08:46,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:09:22,086 WARN L293 SmtUtils]: Spent 13.14s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 20:09:53,128 WARN L293 SmtUtils]: Spent 13.54s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 20:10:25,181 WARN L293 SmtUtils]: Spent 12.92s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)