/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_fillercode_fillercodestructure_filler-pe-ci_file-40.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:42:19,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:42:19,778 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 11:42:19,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:42:19,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:42:19,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:42:19,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:42:19,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:42:19,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:42:19,806 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:42:19,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:42:19,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:42:19,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:42:19,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:42:19,808 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:42:19,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:42:19,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:42:19,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:42:19,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:42:19,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:42:19,810 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:42:19,811 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:42:19,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:42:19,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:42:19,811 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:42:19,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:42:19,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:42:19,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:42:19,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:42:19,814 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:42:19,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:42:19,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:42:20,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:42:20,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:42:20,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:42:20,012 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:42:20,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-40.i [2023-12-16 11:42:21,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:42:21,430 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:42:21,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-40.i [2023-12-16 11:42:21,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7843242f4/90a0496c298446b98080aa956f3af1f3/FLAG182a6ece8 [2023-12-16 11:42:21,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7843242f4/90a0496c298446b98080aa956f3af1f3 [2023-12-16 11:42:21,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:42:21,461 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:42:21,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:42:21,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:42:21,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:42:21,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a606c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21, skipping insertion in model container [2023-12-16 11:42:21,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:42:21,700 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_fillercode_fillercodestructure_filler-pe-ci_file-40.i[919,932] [2023-12-16 11:42:21,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:42:21,781 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:42:21,792 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_fillercode_fillercodestructure_filler-pe-ci_file-40.i[919,932] [2023-12-16 11:42:21,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:42:21,841 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:42:21,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21 WrapperNode [2023-12-16 11:42:21,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:42:21,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:42:21,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:42:21,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:42:21,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,884 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 159 [2023-12-16 11:42:21,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:42:21,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:42:21,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:42:21,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:42:21,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,923 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 11:42:21,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:42:21,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:42:21,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:42:21,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:42:21,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (1/1) ... [2023-12-16 11:42:21,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:42:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:42:21,963 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 11:42:21,977 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 11:42:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:42:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:42:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:42:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:42:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:42:21,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:42:22,088 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:42:22,105 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:42:28,236 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:42:28,334 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:42:28,334 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:42:28,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:42:28 BoogieIcfgContainer [2023-12-16 11:42:28,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:42:28,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:42:28,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:42:28,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:42:28,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:42:21" (1/3) ... [2023-12-16 11:42:28,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bdbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:42:28, skipping insertion in model container [2023-12-16 11:42:28,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:42:21" (2/3) ... [2023-12-16 11:42:28,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bdbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:42:28, skipping insertion in model container [2023-12-16 11:42:28,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:42:28" (3/3) ... [2023-12-16 11:42:28,339 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-40.i [2023-12-16 11:42:28,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:42:28,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:42:28,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:42:28,446 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;@321f45d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:42:28,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:42:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 44 states have internal predecessors, (66), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 11:42:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 11:42:28,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:28,487 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:28,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:28,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 846323614, now seen corresponding path program 1 times [2023-12-16 11:42:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:28,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703438632] [2023-12-16 11:42:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:28,504 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 11:42:28,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:28,506 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 11:42:28,557 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 11:42:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:28,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:42:28,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-12-16 11:42:29,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:42:29,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:29,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703438632] [2023-12-16 11:42:29,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703438632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:42:29,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:42:29,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:42:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864536399] [2023-12-16 11:42:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:42:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:42:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:42:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:42:29,028 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 44 states have internal predecessors, (66), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 11:42:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:29,228 INFO L93 Difference]: Finished difference Result 125 states and 220 transitions. [2023-12-16 11:42:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:42:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2023-12-16 11:42:29,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:29,247 INFO L225 Difference]: With dead ends: 125 [2023-12-16 11:42:29,247 INFO L226 Difference]: Without dead ends: 62 [2023-12-16 11:42:29,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 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 11:42:29,252 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:29,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:42:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-16 11:42:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-16 11:42:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 11:42:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 96 transitions. [2023-12-16 11:42:29,285 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 96 transitions. Word has length 123 [2023-12-16 11:42:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:29,285 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 96 transitions. [2023-12-16 11:42:29,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 11:42:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 96 transitions. [2023-12-16 11:42:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:29,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:29,288 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:29,297 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 11:42:29,498 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 11:42:29,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:29,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash -758943144, now seen corresponding path program 1 times [2023-12-16 11:42:29,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:29,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377629329] [2023-12-16 11:42:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:29,515 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 11:42:29,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:29,533 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 11:42:29,542 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 11:42:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:29,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:42:29,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 321 proven. 27 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 11:42:30,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:42:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-16 11:42:30,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:30,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377629329] [2023-12-16 11:42:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377629329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:42:30,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:42:30,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 11:42:30,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705473420] [2023-12-16 11:42:30,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:42:30,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 11:42:30,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 11:42:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:42:30,392 INFO L87 Difference]: Start difference. First operand 62 states and 96 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-16 11:42:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:31,195 INFO L93 Difference]: Finished difference Result 196 states and 292 transitions. [2023-12-16 11:42:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 11:42:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 124 [2023-12-16 11:42:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:31,198 INFO L225 Difference]: With dead ends: 196 [2023-12-16 11:42:31,198 INFO L226 Difference]: Without dead ends: 135 [2023-12-16 11:42:31,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 11:42:31,199 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 282 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:31,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 244 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 11:42:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-16 11:42:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2023-12-16 11:42:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 11:42:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2023-12-16 11:42:31,222 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 124 [2023-12-16 11:42:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2023-12-16 11:42:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-16 11:42:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2023-12-16 11:42:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:31,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:31,226 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:31,238 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 11:42:31,426 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 11:42:31,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:31,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1740645404, now seen corresponding path program 1 times [2023-12-16 11:42:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939568228] [2023-12-16 11:42:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:31,428 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 11:42:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:31,430 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 11:42:31,449 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 11:42:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:31,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:42:31,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 11:42:31,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:42:31,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939568228] [2023-12-16 11:42:31,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939568228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:42:31,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:42:31,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:42:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933791742] [2023-12-16 11:42:31,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:42:31,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:42:31,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:42:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:42:31,849 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:32,126 INFO L93 Difference]: Finished difference Result 249 states and 357 transitions. [2023-12-16 11:42:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:42:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-12-16 11:42:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:32,149 INFO L225 Difference]: With dead ends: 249 [2023-12-16 11:42:32,150 INFO L226 Difference]: Without dead ends: 125 [2023-12-16 11:42:32,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:42:32,154 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:32,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 140 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 11:42:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-16 11:42:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-16 11:42:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 84 states have (on average 1.25) internal successors, (105), 84 states have internal predecessors, (105), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 11:42:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 177 transitions. [2023-12-16 11:42:32,189 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 177 transitions. Word has length 124 [2023-12-16 11:42:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:32,190 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 177 transitions. [2023-12-16 11:42:32,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 177 transitions. [2023-12-16 11:42:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:32,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:32,194 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:32,211 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 11:42:32,410 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 11:42:32,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:32,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash 719577050, now seen corresponding path program 1 times [2023-12-16 11:42:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323533828] [2023-12-16 11:42:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:32,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:42:32,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:32,414 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 11:42:32,417 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 11:42:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:32,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:42:32,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 11:42:33,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:42:33,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323533828] [2023-12-16 11:42:33,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323533828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:42:33,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:42:33,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 11:42:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565926623] [2023-12-16 11:42:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:42:33,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:42:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:42:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:42:33,048 INFO L87 Difference]: Start difference. First operand 125 states and 177 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:34,299 INFO L93 Difference]: Finished difference Result 408 states and 572 transitions. [2023-12-16 11:42:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 11:42:34,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-12-16 11:42:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:34,302 INFO L225 Difference]: With dead ends: 408 [2023-12-16 11:42:34,302 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 11:42:34,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:42:34,303 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 225 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 243 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 11:42:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 11:42:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 170. [2023-12-16 11:42:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 108 states have internal predecessors, (128), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 11:42:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 236 transitions. [2023-12-16 11:42:34,334 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 236 transitions. Word has length 124 [2023-12-16 11:42:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:34,336 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 236 transitions. [2023-12-16 11:42:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 236 transitions. [2023-12-16 11:42:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:34,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:34,338 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:34,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:42:34,552 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 11:42:34,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:34,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 132771036, now seen corresponding path program 1 times [2023-12-16 11:42:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251361739] [2023-12-16 11:42:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:34,554 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 11:42:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:34,556 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 11:42:34,587 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 11:42:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:34,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:42:34,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 213 proven. 9 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-16 11:42:35,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:42:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 11:42:35,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251361739] [2023-12-16 11:42:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251361739] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 11:42:35,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:42:35,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 11:42:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080132786] [2023-12-16 11:42:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:42:35,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:42:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:42:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:42:35,314 INFO L87 Difference]: Start difference. First operand 170 states and 236 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:35,858 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2023-12-16 11:42:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:42:35,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-12-16 11:42:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:35,862 INFO L225 Difference]: With dead ends: 312 [2023-12-16 11:42:35,862 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 11:42:35,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:42:35,863 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 56 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:35,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 149 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 11:42:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 11:42:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-16 11:42:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 113 states have (on average 1.168141592920354) internal successors, (132), 114 states have internal predecessors, (132), 54 states have call successors, (54), 10 states have call predecessors, (54), 10 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 11:42:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 240 transitions. [2023-12-16 11:42:35,878 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 240 transitions. Word has length 124 [2023-12-16 11:42:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:35,878 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 240 transitions. [2023-12-16 11:42:35,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 240 transitions. [2023-12-16 11:42:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:35,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:35,879 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:35,891 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 11:42:36,089 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 11:42:36,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:36,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 190029338, now seen corresponding path program 1 times [2023-12-16 11:42:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172456146] [2023-12-16 11:42:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:36,091 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 11:42:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:36,092 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 11:42:36,119 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 11:42:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:36,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:42:36,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:42:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-16 11:42:36,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:42:36,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:42:36,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172456146] [2023-12-16 11:42:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172456146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:42:36,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:42:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:42:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248253362] [2023-12-16 11:42:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:42:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:42:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:42:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:42:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:42:36,438 INFO L87 Difference]: Start difference. First operand 178 states and 240 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:37,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:42:37,039 INFO L93 Difference]: Finished difference Result 408 states and 541 transitions. [2023-12-16 11:42:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:42:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2023-12-16 11:42:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:42:37,044 INFO L225 Difference]: With dead ends: 408 [2023-12-16 11:42:37,044 INFO L226 Difference]: Without dead ends: 266 [2023-12-16 11:42:37,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:42:37,050 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 43 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:42:37,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 140 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 11:42:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-16 11:42:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 262. [2023-12-16 11:42:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 166 states have (on average 1.1566265060240963) internal successors, (192), 169 states have internal predecessors, (192), 78 states have call successors, (78), 17 states have call predecessors, (78), 17 states have return successors, (78), 75 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-16 11:42:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 348 transitions. [2023-12-16 11:42:37,081 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 348 transitions. Word has length 124 [2023-12-16 11:42:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:42:37,082 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 348 transitions. [2023-12-16 11:42:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-16 11:42:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 348 transitions. [2023-12-16 11:42:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 11:42:37,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:42:37,084 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:42:37,102 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 11:42:37,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:42:37,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:42:37,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:42:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash 190088920, now seen corresponding path program 1 times [2023-12-16 11:42:37,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:42:37,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078361047] [2023-12-16 11:42:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:42:37,300 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 11:42:37,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:42:37,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:42:37,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 11:42:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:42:37,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 11:42:37,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:43:35,676 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 [2023-12-16 11:43:35,676 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 11:43:36,714 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 [2023-12-16 11:43:36,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown