/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-pr-ci_file-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:07:57,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:07:57,768 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 12:07:57,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:07:57,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:07:57,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:07:57,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:07:57,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:07:57,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:07:57,799 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:07:57,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:07:57,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:07:57,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:07:57,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:07:57,801 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:07:57,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:07:57,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:07:57,801 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:07:57,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:07:57,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:07:57,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:07:57,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:07:57,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:07:57,806 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:07:57,808 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:07:57,809 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:07:57,809 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:07:57,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:07:57,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:07:57,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:07:57,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:07:57,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:07:57,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:07:57,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:07:57,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:07:57,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:07:57,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:07:57,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:07:57,812 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:07:57,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:07:58,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:07:58,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:07:58,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:07:58,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:07:58,024 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:07:58,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-17.i [2023-12-16 12:07:59,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:07:59,255 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:07:59,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-17.i [2023-12-16 12:07:59,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32196bae2/f19507a326e84a269c44344a58155619/FLAG654bd99d5 [2023-12-16 12:07:59,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32196bae2/f19507a326e84a269c44344a58155619 [2023-12-16 12:07:59,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:07:59,285 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:07:59,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:07:59,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:07:59,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:07:59,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50906a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59, skipping insertion in model container [2023-12-16 12:07:59,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:07:59,429 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-pr-ci_file-17.i[919,932] [2023-12-16 12:07:59,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:07:59,494 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:07:59,512 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-pr-ci_file-17.i[919,932] [2023-12-16 12:07:59,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:07:59,549 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:07:59,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59 WrapperNode [2023-12-16 12:07:59,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:07:59,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:07:59,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:07:59,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:07:59,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,597 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2023-12-16 12:07:59,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:07:59,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:07:59,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:07:59,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:07:59,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,622 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 12:07:59,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:07:59,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:07:59,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:07:59,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:07:59,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (1/1) ... [2023-12-16 12:07:59,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:07:59,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:07:59,681 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 12:07:59,691 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 12:07:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:07:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:07:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:07:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:07:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:07:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:07:59,775 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:07:59,776 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:08:00,588 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:08:00,625 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:08:00,625 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:08:00,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:08:00 BoogieIcfgContainer [2023-12-16 12:08:00,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:08:00,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:08:00,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:08:00,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:08:00,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:07:59" (1/3) ... [2023-12-16 12:08:00,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd659b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:08:00, skipping insertion in model container [2023-12-16 12:08:00,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:07:59" (2/3) ... [2023-12-16 12:08:00,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd659b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:08:00, skipping insertion in model container [2023-12-16 12:08:00,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:08:00" (3/3) ... [2023-12-16 12:08:00,640 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-17.i [2023-12-16 12:08:00,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:08:00,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:08:00,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:08:00,709 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;@515151a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:08:00,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:08:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 46 states have (on average 1.565217391304348) internal successors, (72), 47 states have internal predecessors, (72), 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 12:08:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 12:08:00,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:00,724 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, 1, 1, 1, 1] [2023-12-16 12:08:00,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:00,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1965276462, now seen corresponding path program 1 times [2023-12-16 12:08:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:00,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143508481] [2023-12-16 12:08:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:00,741 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 12:08:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:00,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:08:00,814 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 12:08:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:01,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:08:01,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-16 12:08:01,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:08:01,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:08:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143508481] [2023-12-16 12:08:01,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143508481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:08:01,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:08:01,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:08:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011957181] [2023-12-16 12:08:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:08:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:08:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:08:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:08:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:08:01,092 INFO L87 Difference]: Start difference. First operand has 69 states, 46 states have (on average 1.565217391304348) internal successors, (72), 47 states have internal predecessors, (72), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 12:08:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:08:01,314 INFO L93 Difference]: Finished difference Result 135 states and 242 transitions. [2023-12-16 12:08:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:08:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 131 [2023-12-16 12:08:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:08:01,332 INFO L225 Difference]: With dead ends: 135 [2023-12-16 12:08:01,332 INFO L226 Difference]: Without dead ends: 67 [2023-12-16 12:08:01,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 12:08:01,337 INFO L413 NwaCegarLoop]: 104 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, 104 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 12:08:01,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 12:08:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-16 12:08:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-16 12:08:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 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 12:08:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2023-12-16 12:08:01,370 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 107 transitions. Word has length 131 [2023-12-16 12:08:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:08:01,370 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 107 transitions. [2023-12-16 12:08:01,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 12:08:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 107 transitions. [2023-12-16 12:08:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 12:08:01,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:01,373 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, 1, 1, 1, 1] [2023-12-16 12:08:01,380 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 12:08:01,579 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 12:08:01,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:01,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 839427350, now seen corresponding path program 1 times [2023-12-16 12:08:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:01,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354808137] [2023-12-16 12:08:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:01,581 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 12:08:01,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:01,583 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 12:08:01,585 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 12:08:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:01,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:08:01,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:02,135 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 12:08:02,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:08:02,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:08:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354808137] [2023-12-16 12:08:02,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354808137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:08:02,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:08:02,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 12:08:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8764128] [2023-12-16 12:08:02,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:08:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:08:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:08:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:08:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:08:02,142 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 12:08:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:08:02,590 INFO L93 Difference]: Finished difference Result 200 states and 320 transitions. [2023-12-16 12:08:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 12:08:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 131 [2023-12-16 12:08:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:08:02,600 INFO L225 Difference]: With dead ends: 200 [2023-12-16 12:08:02,601 INFO L226 Difference]: Without dead ends: 134 [2023-12-16 12:08:02,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 12:08:02,602 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 66 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:08:02,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 353 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 12:08:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-16 12:08:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 105. [2023-12-16 12:08:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 states have internal predecessors, (84), 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 12:08:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 164 transitions. [2023-12-16 12:08:02,617 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 164 transitions. Word has length 131 [2023-12-16 12:08:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:08:02,618 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 164 transitions. [2023-12-16 12:08:02,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 12:08:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 164 transitions. [2023-12-16 12:08:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-16 12:08:02,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:02,620 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, 1, 1, 1, 1, 1] [2023-12-16 12:08:02,627 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 12:08:02,826 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 12:08:02,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:02,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1553771399, now seen corresponding path program 1 times [2023-12-16 12:08:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105945253] [2023-12-16 12:08:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:02,829 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 12:08:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:02,830 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 12:08:02,832 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 12:08:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:03,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:08:03,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 243 proven. 9 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-16 12:08:03,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:08:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 12:08:03,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:08:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105945253] [2023-12-16 12:08:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105945253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:08:03,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:08:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 12:08:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323139256] [2023-12-16 12:08:03,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:08:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 12:08:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:08:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 12:08:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 12:08:03,227 INFO L87 Difference]: Start difference. First operand 105 states and 164 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 12:08:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:08:03,705 INFO L93 Difference]: Finished difference Result 181 states and 276 transitions. [2023-12-16 12:08:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 12:08:03,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 132 [2023-12-16 12:08:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:08:03,717 INFO L225 Difference]: With dead ends: 181 [2023-12-16 12:08:03,717 INFO L226 Difference]: Without dead ends: 115 [2023-12-16 12:08:03,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 12:08:03,718 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:08:03,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 166 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 12:08:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-16 12:08:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2023-12-16 12:08:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 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 12:08:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 164 transitions. [2023-12-16 12:08:03,730 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 164 transitions. Word has length 132 [2023-12-16 12:08:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:08:03,731 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 164 transitions. [2023-12-16 12:08:03,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 12:08:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 164 transitions. [2023-12-16 12:08:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 12:08:03,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:03,732 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, 1, 1, 1, 1, 1, 1] [2023-12-16 12:08:03,750 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 (4)] Ended with exit code 0 [2023-12-16 12:08:03,939 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 12:08:03,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1970671451, now seen corresponding path program 1 times [2023-12-16 12:08:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903720797] [2023-12-16 12:08:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:03,943 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 12:08:03,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:03,944 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 12:08:03,945 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 12:08:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:04,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:08:04,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 399 proven. 27 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-16 12:08:04,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:08:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 12:08:04,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:08:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903720797] [2023-12-16 12:08:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903720797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:08:04,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:08:04,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-16 12:08:04,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866392521] [2023-12-16 12:08:04,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:08:04,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 12:08:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:08:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 12:08:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:08:04,560 INFO L87 Difference]: Start difference. First operand 111 states and 164 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-16 12:08:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:08:05,723 INFO L93 Difference]: Finished difference Result 263 states and 381 transitions. [2023-12-16 12:08:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 12:08:05,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 133 [2023-12-16 12:08:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:08:05,725 INFO L225 Difference]: With dead ends: 263 [2023-12-16 12:08:05,725 INFO L226 Difference]: Without dead ends: 195 [2023-12-16 12:08:05,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-12-16 12:08:05,726 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 192 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:08:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 427 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 12:08:05,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-16 12:08:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 132. [2023-12-16 12:08:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 85 states have internal predecessors, (107), 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 12:08:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 187 transitions. [2023-12-16 12:08:05,741 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 187 transitions. Word has length 133 [2023-12-16 12:08:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:08:05,741 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 187 transitions. [2023-12-16 12:08:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-16 12:08:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 187 transitions. [2023-12-16 12:08:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 12:08:05,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:05,743 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, 1, 1, 1, 1, 1, 1] [2023-12-16 12:08:05,755 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 12:08:05,952 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 12:08:05,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1514949219, now seen corresponding path program 1 times [2023-12-16 12:08:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189347561] [2023-12-16 12:08:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:05,954 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 12:08:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:05,956 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 12:08:05,957 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 12:08:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:06,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 12:08:06,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 309 proven. 42 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2023-12-16 12:08:06,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:08:06,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:08:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189347561] [2023-12-16 12:08:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189347561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:08:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573731017] [2023-12-16 12:08:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:06,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:08:06,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:08:06,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:08:06,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 12:08:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:07,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:08:07,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:08:07,626 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 12:08:07,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:08:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573731017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:08:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 12:08:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-12-16 12:08:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227785464] [2023-12-16 12:08:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:08:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:08:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:08:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:08:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 12:08:07,629 INFO L87 Difference]: Start difference. First operand 132 states and 187 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 12:08:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:08:08,376 INFO L93 Difference]: Finished difference Result 349 states and 495 transitions. [2023-12-16 12:08:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 12:08:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 133 [2023-12-16 12:08:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:08:08,379 INFO L225 Difference]: With dead ends: 349 [2023-12-16 12:08:08,379 INFO L226 Difference]: Without dead ends: 264 [2023-12-16 12:08:08,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-16 12:08:08,380 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 86 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 12:08:08,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 291 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 12:08:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-16 12:08:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 259. [2023-12-16 12:08:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 183 states have (on average 1.278688524590164) internal successors, (234), 184 states have internal predecessors, (234), 64 states have call successors, (64), 11 states have call predecessors, (64), 11 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-16 12:08:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 362 transitions. [2023-12-16 12:08:08,412 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 362 transitions. Word has length 133 [2023-12-16 12:08:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:08:08,414 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 362 transitions. [2023-12-16 12:08:08,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 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 12:08:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 362 transitions. [2023-12-16 12:08:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 12:08:08,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:08:08,420 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, 1, 1, 1, 1, 1, 1] [2023-12-16 12:08:08,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:08:08,652 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 12:08:08,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 12:08:08,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:08:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:08:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1572207521, now seen corresponding path program 1 times [2023-12-16 12:08:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:08:08,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633049785] [2023-12-16 12:08:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:08:08,834 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 12:08:08,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:08:08,835 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 12:08:08,845 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 12:08:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:08:08,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 12:08:09,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:09:12,956 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 12:09:12,956 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 12:09:13,985 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 (8)] Ended with exit code 0 [2023-12-16 12:09:14,157 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 12:09:14,170 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown