/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_floatingpointinfluence_has-floats_file-21.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 18:19:27,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 18:19:27,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 18:19:27,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 18:19:27,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 18:19:27,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 18:19:27,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 18:19:27,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 18:19:27,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 18:19:27,654 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 18:19:27,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 18:19:27,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 18:19:27,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 18:19:27,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 18:19:27,655 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 18:19:27,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 18:19:27,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 18:19:27,664 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 18:19:27,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 18:19:27,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 18:19:27,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 18:19:27,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 18:19:27,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 18:19:27,667 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 18:19:27,667 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 18:19:27,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 18:19:27,667 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 18:19:27,668 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 18:19:27,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 18:19:27,668 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 18:19:27,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 18:19:27,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 18:19:27,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 18:19:27,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 18:19:27,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 18:19:27,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 18:19:27,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 18:19:27,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 18:19:27,670 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 18:19:27,671 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 18:19:27,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 18:19:27,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 18:19:27,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 18:19:27,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 18:19:27,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 18:19:27,672 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 18:19:27,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 18:19:27,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 18:19:27,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 18:19:27,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 18:19:27,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 18:19:27,966 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 18:19:27,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-21.i [2023-12-23 18:19:29,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 18:19:29,324 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 18:19:29,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-21.i [2023-12-23 18:19:29,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bda0abbb/fbef35bd0cef4d7e9f9b6e7cbcdf75d2/FLAG032d81288 [2023-12-23 18:19:29,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bda0abbb/fbef35bd0cef4d7e9f9b6e7cbcdf75d2 [2023-12-23 18:19:29,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 18:19:29,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 18:19:29,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 18:19:29,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 18:19:29,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 18:19:29,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cad6b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29, skipping insertion in model container [2023-12-23 18:19:29,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 18:19:29,542 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_floatingpointinfluence_has-floats_file-21.i[917,930] [2023-12-23 18:19:29,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 18:19:29,592 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 18:19:29,609 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_floatingpointinfluence_has-floats_file-21.i[917,930] [2023-12-23 18:19:29,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 18:19:29,655 INFO L206 MainTranslator]: Completed translation [2023-12-23 18:19:29,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29 WrapperNode [2023-12-23 18:19:29,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 18:19:29,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 18:19:29,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 18:19:29,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 18:19:29,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,714 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2023-12-23 18:19:29,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 18:19:29,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 18:19:29,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 18:19:29,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 18:19:29,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,766 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]. [2023-12-23 18:19:29,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 18:19:29,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 18:19:29,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 18:19:29,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 18:19:29,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (1/1) ... [2023-12-23 18:19:29,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 18:19:29,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 18:19:29,822 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) [2023-12-23 18:19:29,824 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 [2023-12-23 18:19:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 18:19:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 18:19:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 18:19:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 18:19:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 18:19:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 18:19:29,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 18:19:29,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 18:19:35,815 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 18:19:35,849 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 18:19:35,849 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 18:19:35,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:19:35 BoogieIcfgContainer [2023-12-23 18:19:35,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 18:19:35,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 18:19:35,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 18:19:35,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 18:19:35,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:19:29" (1/3) ... [2023-12-23 18:19:35,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7428e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:19:35, skipping insertion in model container [2023-12-23 18:19:35,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:19:29" (2/3) ... [2023-12-23 18:19:35,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7428e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:19:35, skipping insertion in model container [2023-12-23 18:19:35,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:19:35" (3/3) ... [2023-12-23 18:19:35,858 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-21.i [2023-12-23 18:19:35,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 18:19:35,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 18:19:35,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 18:19:35,934 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;@2e2c0f41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 18:19:35,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 18:19:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-23 18:19:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-23 18:19:35,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:19:35,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:19:35,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:19:35,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:19:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1039608984, now seen corresponding path program 1 times [2023-12-23 18:19:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:19:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693351662] [2023-12-23 18:19:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:19:35,973 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 [2023-12-23 18:19:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:19:35,976 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) [2023-12-23 18:19:35,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 18:19:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:19:36,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 18:19:36,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:19:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-23 18:19:36,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 18:19:36,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:19:36,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693351662] [2023-12-23 18:19:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693351662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 18:19:36,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 18:19:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 18:19:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963384899] [2023-12-23 18:19:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 18:19:36,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 18:19:36,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:19:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 18:19:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 18:19:36,223 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-23 18:19:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:19:36,281 INFO L93 Difference]: Finished difference Result 63 states and 103 transitions. [2023-12-23 18:19:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 18:19:36,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2023-12-23 18:19:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:19:36,291 INFO L225 Difference]: With dead ends: 63 [2023-12-23 18:19:36,291 INFO L226 Difference]: Without dead ends: 31 [2023-12-23 18:19:36,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 18:19:36,296 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 18:19:36,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 18:19:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-23 18:19:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-23 18:19:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-23 18:19:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2023-12-23 18:19:36,323 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 49 [2023-12-23 18:19:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:19:36,323 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2023-12-23 18:19:36,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-23 18:19:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2023-12-23 18:19:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-23 18:19:36,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:19:36,325 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:19:36,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 18:19:36,531 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 [2023-12-23 18:19:36,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:19:36,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:19:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash 743328986, now seen corresponding path program 1 times [2023-12-23 18:19:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:19:36,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840357903] [2023-12-23 18:19:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:19:36,533 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 [2023-12-23 18:19:36,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:19:36,534 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) [2023-12-23 18:19:36,536 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 [2023-12-23 18:19:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:19:36,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 18:19:36,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:19:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-23 18:19:37,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 18:19:37,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:19:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840357903] [2023-12-23 18:19:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840357903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 18:19:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 18:19:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 18:19:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365555583] [2023-12-23 18:19:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 18:19:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 18:19:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:19:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 18:19:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 18:19:37,008 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:19:40,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:19:43,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:19:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:19:43,485 INFO L93 Difference]: Finished difference Result 98 states and 138 transitions. [2023-12-23 18:19:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 18:19:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 49 [2023-12-23 18:19:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:19:43,492 INFO L225 Difference]: With dead ends: 98 [2023-12-23 18:19:43,492 INFO L226 Difference]: Without dead ends: 68 [2023-12-23 18:19:43,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 18:19:43,493 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-23 18:19:43,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 113 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-23 18:19:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-23 18:19:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2023-12-23 18:19:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 18:19:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2023-12-23 18:19:43,517 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 49 [2023-12-23 18:19:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:19:43,518 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2023-12-23 18:19:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:19:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2023-12-23 18:19:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-23 18:19:43,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:19:43,521 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:19:43,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 18:19:43,730 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 [2023-12-23 18:19:43,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:19:43,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:19:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1586302373, now seen corresponding path program 1 times [2023-12-23 18:19:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:19:43,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910896628] [2023-12-23 18:19:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:19:43,732 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 [2023-12-23 18:19:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:19:43,734 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) [2023-12-23 18:19:43,747 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 [2023-12-23 18:19:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:19:43,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 18:19:43,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:19:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-23 18:19:44,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 18:19:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-23 18:19:44,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:19:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910896628] [2023-12-23 18:19:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910896628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 18:19:44,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 18:19:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 18:19:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157179999] [2023-12-23 18:19:44,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 18:19:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 18:19:44,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:19:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 18:19:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 18:19:44,208 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-23 18:19:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:19:44,544 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2023-12-23 18:19:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 18:19:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 50 [2023-12-23 18:19:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:19:44,550 INFO L225 Difference]: With dead ends: 116 [2023-12-23 18:19:44,551 INFO L226 Difference]: Without dead ends: 60 [2023-12-23 18:19:44,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-23 18:19:44,552 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 45 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 18:19:44,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 72 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 18:19:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-23 18:19:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-12-23 18:19:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 18:19:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-12-23 18:19:44,577 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 50 [2023-12-23 18:19:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:19:44,577 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-12-23 18:19:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-23 18:19:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-12-23 18:19:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-23 18:19:44,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:19:44,579 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:19:44,603 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 [2023-12-23 18:19:44,785 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 [2023-12-23 18:19:44,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:19:44,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:19:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1684609692, now seen corresponding path program 1 times [2023-12-23 18:19:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:19:44,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010097578] [2023-12-23 18:19:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:19:44,788 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 [2023-12-23 18:19:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:19:44,792 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) [2023-12-23 18:19:44,793 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 [2023-12-23 18:19:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:19:45,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 18:19:45,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:21:29,748 WARN L293 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:21:36,260 WARN L293 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:21:51,015 WARN L293 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:22:02,712 WARN L293 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:22:20,664 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:22:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-23 18:22:24,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 18:22:24,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:22:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010097578] [2023-12-23 18:22:24,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010097578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 18:22:24,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 18:22:24,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-23 18:22:24,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598783216] [2023-12-23 18:22:24,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 18:22:24,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 18:22:24,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:22:24,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 18:22:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-23 18:22:24,811 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:22:27,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:22:29,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:22:33,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:22:36,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:22:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:22:36,931 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2023-12-23 18:22:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 18:22:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2023-12-23 18:22:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:22:36,932 INFO L225 Difference]: With dead ends: 107 [2023-12-23 18:22:36,933 INFO L226 Difference]: Without dead ends: 73 [2023-12-23 18:22:36,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 18:22:36,934 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-23 18:22:36,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 157 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-23 18:22:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-23 18:22:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2023-12-23 18:22:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 18:22:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2023-12-23 18:22:36,942 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 51 [2023-12-23 18:22:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:22:36,943 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2023-12-23 18:22:36,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:22:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2023-12-23 18:22:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-23 18:22:36,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:22:36,944 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:22:36,955 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 [2023-12-23 18:22:37,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 18:22:37,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:22:37,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:22:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 674424809, now seen corresponding path program 1 times [2023-12-23 18:22:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:22:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413961939] [2023-12-23 18:22:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:22:37,152 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 [2023-12-23 18:22:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:22:37,153 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) [2023-12-23 18:22:37,164 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 [2023-12-23 18:22:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:22:37,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 18:22:37,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:24:45,150 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:24:51,643 WARN L293 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:24:57,133 WARN L293 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:02,395 WARN L293 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:08,839 WARN L293 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:14,836 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:22,023 WARN L293 SmtUtils]: Spent 7.15s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:28,824 WARN L293 SmtUtils]: Spent 6.79s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:36,233 WARN L293 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:43,606 WARN L293 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:51,996 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:25:57,215 WARN L293 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:06,200 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:13,972 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:19,398 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:27,204 WARN L293 SmtUtils]: Spent 7.16s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:34,950 WARN L293 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:26:41,161 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:27:09,007 WARN L293 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:27:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-23 18:27:24,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 18:27:24,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:27:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413961939] [2023-12-23 18:27:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413961939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 18:27:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 18:27:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-23 18:27:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897364934] [2023-12-23 18:27:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 18:27:24,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 18:27:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:27:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 18:27:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-23 18:27:24,941 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:27:27,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:31,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:35,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:37,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:27:37,862 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2023-12-23 18:27:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 18:27:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 52 [2023-12-23 18:27:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:27:37,863 INFO L225 Difference]: With dead ends: 71 [2023-12-23 18:27:37,863 INFO L226 Difference]: Without dead ends: 69 [2023-12-23 18:27:37,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 18:27:37,864 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-23 18:27:37,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 155 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-23 18:27:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-23 18:27:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-12-23 18:27:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 18:27:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2023-12-23 18:27:37,872 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 52 [2023-12-23 18:27:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:27:37,873 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2023-12-23 18:27:37,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-23 18:27:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2023-12-23 18:27:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-23 18:27:37,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:27:37,874 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:27:37,887 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 [2023-12-23 18:27:38,085 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 [2023-12-23 18:27:38,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:27:38,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:27:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1846625856, now seen corresponding path program 1 times [2023-12-23 18:27:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:27:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251352440] [2023-12-23 18:27:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:27:38,086 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 [2023-12-23 18:27:38,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:27:38,088 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) [2023-12-23 18:27:38,089 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 [2023-12-23 18:27:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:27:38,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 18:27:38,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:27:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 5 proven. 211 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-23 18:27:38,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 18:27:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-23 18:27:42,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 18:27:42,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251352440] [2023-12-23 18:27:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251352440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 18:27:42,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 18:27:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-23 18:27:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800618877] [2023-12-23 18:27:42,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 18:27:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 18:27:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 18:27:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 18:27:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-23 18:27:42,848 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-23 18:27:46,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:51,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:53,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:27:57,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:28:00,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 18:28:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 18:28:01,059 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2023-12-23 18:28:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 18:28:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 100 [2023-12-23 18:28:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 18:28:01,060 INFO L225 Difference]: With dead ends: 100 [2023-12-23 18:28:01,060 INFO L226 Difference]: Without dead ends: 66 [2023-12-23 18:28:01,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-23 18:28:01,061 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 73 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-23 18:28:01,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 82 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 55 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2023-12-23 18:28:01,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-23 18:28:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-12-23 18:28:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-23 18:28:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2023-12-23 18:28:01,072 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 100 [2023-12-23 18:28:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 18:28:01,073 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2023-12-23 18:28:01,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-23 18:28:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2023-12-23 18:28:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-23 18:28:01,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 18:28:01,074 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-23 18:28:01,095 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 [2023-12-23 18:28:01,274 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 [2023-12-23 18:28:01,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 18:28:01,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 18:28:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 760749443, now seen corresponding path program 1 times [2023-12-23 18:28:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 18:28:01,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200552115] [2023-12-23 18:28:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 18:28:01,276 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 [2023-12-23 18:28:01,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 18:28:01,278 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) [2023-12-23 18:28:01,280 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 [2023-12-23 18:28:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 18:28:01,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 18:28:01,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 18:28:25,636 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:28:30,683 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:28:35,853 WARN L293 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:28:51,891 WARN L293 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:28:57,006 WARN L293 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:29:10,880 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:29:45,670 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:29:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 216 proven. 1 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-23 18:29:50,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 18:31:06,776 WARN L293 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:22,047 WARN L293 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:27,276 WARN L293 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:33,183 WARN L293 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:39,350 WARN L293 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:45,469 WARN L293 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:51,818 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:31:58,133 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:32:05,090 WARN L293 SmtUtils]: Spent 6.88s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:32:33,023 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:32:46,970 WARN L293 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:32:52,717 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:33:04,640 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:33:11,136 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:33:18,181 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:33:30,612 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 18:34:02,015 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-23 18:34:05,399 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 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 18:34:05,400 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 [2023-12-23 18:34:06,439 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 [2023-12-23 18:34:06,608 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-23 18:34:06,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-23 18:34:06,641 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 18:34:06,642 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 102 with TraceHistMax 14,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-23 18:34:06,645 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-23 18:34:06,647 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 18:34:06,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:34:06 BoogieIcfgContainer [2023-12-23 18:34:06,649 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 18:34:06,649 INFO L158 Benchmark]: Toolchain (without parser) took 877298.23ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 929.0MB). Free memory was 255.2MB in the beginning and 1.0GB in the end (delta: -758.5MB). Peak memory consumption was 728.7MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,650 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory was 131.4MB in the beginning and 131.3MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 18:34:06,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.44ms. Allocated memory is still 314.6MB. Free memory was 254.9MB in the beginning and 241.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.67ms. Allocated memory is still 314.6MB. Free memory was 241.8MB in the beginning and 239.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,650 INFO L158 Benchmark]: Boogie Preprocessor took 63.89ms. Allocated memory is still 314.6MB. Free memory was 239.8MB in the beginning and 237.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,651 INFO L158 Benchmark]: RCFGBuilder took 6059.73ms. Allocated memory is still 314.6MB. Free memory was 237.0MB in the beginning and 272.7MB in the end (delta: -35.6MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,651 INFO L158 Benchmark]: TraceAbstraction took 870796.56ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 929.0MB). Free memory was 272.2MB in the beginning and 1.0GB in the end (delta: -741.5MB). Peak memory consumption was 744.9MB. Max. memory is 8.0GB. [2023-12-23 18:34:06,652 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory was 131.4MB in the beginning and 131.3MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 302.44ms. Allocated memory is still 314.6MB. Free memory was 254.9MB in the beginning and 241.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.67ms. Allocated memory is still 314.6MB. Free memory was 241.8MB in the beginning and 239.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.89ms. Allocated memory is still 314.6MB. Free memory was 239.8MB in the beginning and 237.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 6059.73ms. Allocated memory is still 314.6MB. Free memory was 237.0MB in the beginning and 272.7MB in the end (delta: -35.6MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. * TraceAbstraction took 870796.56ms. Allocated memory was 314.6MB in the beginning and 1.2GB in the end (delta: 929.0MB). Free memory was 272.2MB in the beginning and 1.0GB in the end (delta: -741.5MB). Peak memory consumption was 744.9MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 102 with TraceHistMax 14,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.7s, OverallIterations: 7, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 50.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 49.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 620 SdHoareTripleChecker+Invalid, 48.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 378 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 272 IncrementalHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 242 mSDtfsCounter, 272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 506 GetRequests, 471 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 452.4s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 493 ConstructedInterpolants, 0 QuantifiedInterpolants, 1967 SizeOfPredicates, 39 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1028/1272 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