/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:06:12,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:06:12,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:06:12,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:06:12,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:06:12,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:06:12,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:06:12,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:06:12,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:06:12,895 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:06:12,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:06:12,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:06:12,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:06:12,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:06:12,901 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:06:12,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:06:12,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:06:12,901 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:06:12,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:06:12,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:06:12,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:06:12,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:06:12,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:06:12,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:06:12,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:06:12,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:06:12,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:06:12,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:06:12,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:06:12,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:06:12,907 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:06:12,907 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:06:13,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:06:13,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:06:13,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:06:13,156 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:06:13,156 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:06:13,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-15.i [2023-12-16 10:06:14,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:06:14,397 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:06:14,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-15.i [2023-12-16 10:06:14,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc304186/7db2e95af0f5402e8c246a2c5eca3434/FLAG2569a448e [2023-12-16 10:06:14,415 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc304186/7db2e95af0f5402e8c246a2c5eca3434 [2023-12-16 10:06:14,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:06:14,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:06:14,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:06:14,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:06:14,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:06:14,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5ab2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14, skipping insertion in model container [2023-12-16 10:06:14,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:06:14,587 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-15.i[919,932] [2023-12-16 10:06:14,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:06:14,668 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:06:14,679 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-15.i[919,932] [2023-12-16 10:06:14,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:06:14,729 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:06:14,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14 WrapperNode [2023-12-16 10:06:14,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:06:14,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:06:14,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:06:14,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:06:14,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,771 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-12-16 10:06:14,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:06:14,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:06:14,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:06:14,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:06:14,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,846 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 10:06:14,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:06:14,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:06:14,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:06:14,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:06:14,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (1/1) ... [2023-12-16 10:06:14,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:06:14,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:06:14,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 10:06:14,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 10:06:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:06:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:06:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:06:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:06:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:06:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:06:15,039 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:06:15,043 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:06:19,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:06:19,395 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:06:19,395 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:06:19,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:06:19 BoogieIcfgContainer [2023-12-16 10:06:19,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:06:19,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:06:19,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:06:19,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:06:19,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:06:14" (1/3) ... [2023-12-16 10:06:19,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cb5996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:06:19, skipping insertion in model container [2023-12-16 10:06:19,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:06:14" (2/3) ... [2023-12-16 10:06:19,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cb5996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:06:19, skipping insertion in model container [2023-12-16 10:06:19,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:06:19" (3/3) ... [2023-12-16 10:06:19,401 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-15.i [2023-12-16 10:06:19,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:06:19,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:06:19,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:06:19,518 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;@58d573a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:06:19,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:06:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 35 states have (on average 1.457142857142857) internal successors, (51), 36 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 10:06:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 10:06:19,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:19,550 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:19,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:19,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash 490304764, now seen corresponding path program 1 times [2023-12-16 10:06:19,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:19,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857631916] [2023-12-16 10:06:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:19,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:19,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:19,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:19,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 10:06:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:19,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:06:19,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:06:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-16 10:06:19,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:06:19,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:06:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857631916] [2023-12-16 10:06:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857631916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:06:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:06:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:06:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716357166] [2023-12-16 10:06:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:06:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:06:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:06:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:06:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:06:19,994 INFO L87 Difference]: Start difference. First operand has 58 states, 35 states have (on average 1.457142857142857) internal successors, (51), 36 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 10:06:23,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:06:23,149 INFO L93 Difference]: Finished difference Result 113 states and 200 transitions. [2023-12-16 10:06:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:06:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 125 [2023-12-16 10:06:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:06:23,182 INFO L225 Difference]: With dead ends: 113 [2023-12-16 10:06:23,182 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 10:06:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:06:23,200 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:06:23,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 10:06:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 10:06:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-16 10:06:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 10:06:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2023-12-16 10:06:23,230 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 125 [2023-12-16 10:06:23,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:06:23,230 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2023-12-16 10:06:23,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 10:06:23,230 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2023-12-16 10:06:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 10:06:23,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:23,233 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:23,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 10:06:23,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:23,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:23,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -843425208, now seen corresponding path program 1 times [2023-12-16 10:06:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806426623] [2023-12-16 10:06:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:23,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 10:06:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:23,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:06:23,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:06:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 10:06:24,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:06:24,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:06:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806426623] [2023-12-16 10:06:24,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806426623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:06:24,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:06:24,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:06:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768926548] [2023-12-16 10:06:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:06:24,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:06:24,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:06:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:06:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:06:24,630 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 10:06:26,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:28,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:06:28,042 INFO L93 Difference]: Finished difference Result 167 states and 257 transitions. [2023-12-16 10:06:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 10:06:28,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-16 10:06:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:06:28,082 INFO L225 Difference]: With dead ends: 167 [2023-12-16 10:06:28,082 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 10:06:28,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:06:28,084 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 47 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 10:06:28,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 236 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 10:06:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 10:06:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2023-12-16 10:06:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 10:06:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 144 transitions. [2023-12-16 10:06:28,105 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 144 transitions. Word has length 125 [2023-12-16 10:06:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:06:28,106 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 144 transitions. [2023-12-16 10:06:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 10:06:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 144 transitions. [2023-12-16 10:06:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 10:06:28,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:28,107 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:28,117 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 [2023-12-16 10:06:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:28,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1239782105, now seen corresponding path program 1 times [2023-12-16 10:06:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:28,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101009820] [2023-12-16 10:06:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:28,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:28,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:28,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:28,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 10:06:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:28,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 10:06:28,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:06:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 10:06:30,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:06:30,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:06:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101009820] [2023-12-16 10:06:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101009820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:06:30,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:06:30,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:06:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541263753] [2023-12-16 10:06:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:06:30,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 10:06:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:06:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 10:06:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 10:06:30,216 INFO L87 Difference]: Start difference. First operand 95 states and 144 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 10:06:31,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:35,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:37,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 10:06:45,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 10:06:47,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 10:06:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:06:47,123 INFO L93 Difference]: Finished difference Result 205 states and 314 transitions. [2023-12-16 10:06:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 10:06:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 126 [2023-12-16 10:06:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:06:47,145 INFO L225 Difference]: With dead ends: 205 [2023-12-16 10:06:47,145 INFO L226 Difference]: Without dead ends: 150 [2023-12-16 10:06:47,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:06:47,147 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 70 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:06:47,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 208 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-16 10:06:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-16 10:06:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 96. [2023-12-16 10:06:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 10:06:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 145 transitions. [2023-12-16 10:06:47,176 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 145 transitions. Word has length 126 [2023-12-16 10:06:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:06:47,177 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 145 transitions. [2023-12-16 10:06:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 10:06:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 145 transitions. [2023-12-16 10:06:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 10:06:47,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:47,179 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:47,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 10:06:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:47,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:47,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash 430435479, now seen corresponding path program 1 times [2023-12-16 10:06:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796091026] [2023-12-16 10:06:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:47,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:47,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:47,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 10:06:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:47,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:06:47,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:06:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 336 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-16 10:06:48,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:06:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 10:06:48,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:06:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796091026] [2023-12-16 10:06:48,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796091026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:06:48,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:06:48,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 10:06:48,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465808337] [2023-12-16 10:06:48,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:06:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 10:06:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:06:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 10:06:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-16 10:06:48,888 INFO L87 Difference]: Start difference. First operand 96 states and 145 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-16 10:06:51,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:53,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:06:55,786 INFO L93 Difference]: Finished difference Result 224 states and 329 transitions. [2023-12-16 10:06:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 10:06:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 126 [2023-12-16 10:06:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:06:55,808 INFO L225 Difference]: With dead ends: 224 [2023-12-16 10:06:55,808 INFO L226 Difference]: Without dead ends: 168 [2023-12-16 10:06:55,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-12-16 10:06:55,810 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 300 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-16 10:06:55,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 210 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-16 10:06:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-16 10:06:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 103. [2023-12-16 10:06:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 10:06:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2023-12-16 10:06:55,835 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 126 [2023-12-16 10:06:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:06:55,835 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2023-12-16 10:06:55,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2023-12-16 10:06:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2023-12-16 10:06:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 10:06:55,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:55,837 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:55,847 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 (5)] Ended with exit code 0 [2023-12-16 10:06:56,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:56,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:56,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash -874623935, now seen corresponding path program 1 times [2023-12-16 10:06:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:56,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822304438] [2023-12-16 10:06:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:56,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:56,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:56,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:56,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 10:06:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:56,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 10:06:56,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:06:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 289 proven. 12 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-16 10:06:56,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:06:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 10:06:56,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:06:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822304438] [2023-12-16 10:06:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822304438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:06:56,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:06:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 10:06:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342140323] [2023-12-16 10:06:56,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:06:56,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 10:06:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:06:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 10:06:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:06:56,668 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 10:06:58,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:06:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:06:58,357 INFO L93 Difference]: Finished difference Result 175 states and 244 transitions. [2023-12-16 10:06:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 10:06:58,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 127 [2023-12-16 10:06:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:06:58,395 INFO L225 Difference]: With dead ends: 175 [2023-12-16 10:06:58,395 INFO L226 Difference]: Without dead ends: 116 [2023-12-16 10:06:58,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-16 10:06:58,396 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 69 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 10:06:58,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 95 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 10:06:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-16 10:06:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2023-12-16 10:06:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 10:06:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 145 transitions. [2023-12-16 10:06:58,426 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 145 transitions. Word has length 127 [2023-12-16 10:06:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:06:58,427 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 145 transitions. [2023-12-16 10:06:58,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 10:06:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 145 transitions. [2023-12-16 10:06:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 10:06:58,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:06:58,430 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:06:58,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 10:06:58,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:58,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:06:58,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:06:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 959488771, now seen corresponding path program 1 times [2023-12-16 10:06:58,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:06:58,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524411767] [2023-12-16 10:06:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:06:58,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:06:58,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:06:58,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:06:58,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 10:06:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:06:58,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 10:06:58,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:07:32,756 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:07:32,799 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:07:33,782 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 [2023-12-16 10:07:34,000 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 [2023-12-16 10:07:34,013 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 10:07:34,013 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 128 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-16 10:07:34,016 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 10:07:34,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 10:07:34,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 10:07:34 BoogieIcfgContainer [2023-12-16 10:07:34,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 10:07:34,020 INFO L158 Benchmark]: Toolchain (without parser) took 79602.31ms. Allocated memory is still 335.5MB. Free memory was 280.2MB in the beginning and 109.8MB in the end (delta: 170.4MB). Peak memory consumption was 170.9MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,020 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 10:07:34,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.67ms. Allocated memory is still 335.5MB. Free memory was 280.2MB in the beginning and 265.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.23ms. Allocated memory is still 335.5MB. Free memory was 265.4MB in the beginning and 262.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,020 INFO L158 Benchmark]: Boogie Preprocessor took 94.29ms. Allocated memory is still 335.5MB. Free memory was 262.9MB in the beginning and 259.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,021 INFO L158 Benchmark]: RCFGBuilder took 4528.81ms. Allocated memory is still 335.5MB. Free memory was 259.8MB in the beginning and 237.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,021 INFO L158 Benchmark]: TraceAbstraction took 74622.26ms. Allocated memory is still 335.5MB. Free memory was 236.7MB in the beginning and 109.8MB in the end (delta: 126.9MB). Peak memory consumption was 127.9MB. Max. memory is 8.0GB. [2023-12-16 10:07:34,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 311.67ms. Allocated memory is still 335.5MB. Free memory was 280.2MB in the beginning and 265.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.23ms. Allocated memory is still 335.5MB. Free memory was 265.4MB in the beginning and 262.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.29ms. Allocated memory is still 335.5MB. Free memory was 262.9MB in the beginning and 259.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 4528.81ms. Allocated memory is still 335.5MB. Free memory was 259.8MB in the beginning and 237.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 74622.26ms. Allocated memory is still 335.5MB. Free memory was 236.7MB in the beginning and 109.8MB in the end (delta: 126.9MB). Peak memory consumption was 127.9MB. 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 128 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.5s, OverallIterations: 6, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 488 SdHoareTripleChecker+Valid, 30.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 486 mSDsluCounter, 832 SdHoareTripleChecker+Invalid, 29.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 407 mSDsCounter, 461 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 400 IncrementalHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 461 mSolverCounterUnsat, 425 mSDtfsCounter, 400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 901 GetRequests, 858 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=5, InterpolantAutomatonStates: 36, 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, 5 MinimizatonAttempts, 144 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 629 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 875 ConstructedInterpolants, 1 QuantifiedInterpolants, 3219 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 4942/5320 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 [2023-12-16 10:07:34,027 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown