/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_variablewrapping_normal_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 11:28:26,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 11:28:26,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 11:28:26,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 11:28:26,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 11:28:26,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 11:28:26,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 11:28:26,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 11:28:26,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 11:28:26,772 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 11:28:26,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 11:28:26,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 11:28:26,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 11:28:26,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 11:28:26,773 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 11:28:26,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 11:28:26,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 11:28:26,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 11:28:26,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 11:28:26,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 11:28:26,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 11:28:26,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 11:28:26,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 11:28:26,776 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 11:28:26,788 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 11:28:26,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 11:28:26,789 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 11:28:26,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 11:28:26,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 11:28:26,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 11:28:26,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 11:28:26,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 11:28:26,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 11:28:26,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 11:28:26,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 11:28:26,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 11:28:26,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 11:28:26,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 11:28:26,791 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 11:28:26,791 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 11:28:26,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 11:28:26,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 11:28:26,792 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 11:28:26,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 11:28:26,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 11:28:26,793 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 11:28:26,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 11:28:26,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 11:28:26,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 11:28:26,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 11:28:26,968 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 11:28:26,969 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 11:28:26,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_normal_file-15.i [2023-12-24 11:28:28,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 11:28:28,281 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 11:28:28,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_normal_file-15.i [2023-12-24 11:28:28,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d562b75/7a847d61a4104d2490cb3221a16f6a62/FLAG07716c0bb [2023-12-24 11:28:28,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d562b75/7a847d61a4104d2490cb3221a16f6a62 [2023-12-24 11:28:28,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 11:28:28,303 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 11:28:28,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 11:28:28,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 11:28:28,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 11:28:28,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e27cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28, skipping insertion in model container [2023-12-24 11:28:28,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 11:28:28,473 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_variablewrapping_normal_file-15.i[913,926] [2023-12-24 11:28:28,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 11:28:28,527 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 11:28:28,536 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_variablewrapping_normal_file-15.i[913,926] [2023-12-24 11:28:28,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 11:28:28,565 INFO L206 MainTranslator]: Completed translation [2023-12-24 11:28:28,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28 WrapperNode [2023-12-24 11:28:28,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 11:28:28,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 11:28:28,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 11:28:28,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 11:28:28,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,604 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-24 11:28:28,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 11:28:28,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 11:28:28,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 11:28:28,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 11:28:28,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,627 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]. [2023-12-24 11:28:28,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 11:28:28,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 11:28:28,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 11:28:28,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 11:28:28,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (1/1) ... [2023-12-24 11:28:28,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 11:28:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 11:28:28,667 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) [2023-12-24 11:28:28,674 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 [2023-12-24 11:28:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 11:28:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 11:28:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 11:28:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 11:28:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 11:28:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 11:28:28,751 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 11:28:28,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 11:28:29,467 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 11:28:29,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 11:28:29,541 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 11:28:29,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:28:29 BoogieIcfgContainer [2023-12-24 11:28:29,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 11:28:29,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 11:28:29,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 11:28:29,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 11:28:29,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 11:28:28" (1/3) ... [2023-12-24 11:28:29,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270910bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:28:29, skipping insertion in model container [2023-12-24 11:28:29,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 11:28:28" (2/3) ... [2023-12-24 11:28:29,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270910bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 11:28:29, skipping insertion in model container [2023-12-24 11:28:29,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 11:28:29" (3/3) ... [2023-12-24 11:28:29,548 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-15.i [2023-12-24 11:28:29,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 11:28:29,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 11:28:29,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 11:28:29,631 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;@1d049e32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 11:28:29,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 11:28:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 11:28:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 11:28:29,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 11:28:29,643 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 11:28:29,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 11:28:29,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 11:28:29,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1285337844, now seen corresponding path program 1 times [2023-12-24 11:28:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 11:28:29,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369674946] [2023-12-24 11:28:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 11:28:29,656 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 [2023-12-24 11:28:29,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 11:28:29,658 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) [2023-12-24 11:28:29,669 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 [2023-12-24 11:28:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 11:28:29,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 11:28:29,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 11:28:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-24 11:28:29,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 11:28:29,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 11:28:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369674946] [2023-12-24 11:28:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369674946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 11:28:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 11:28:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 11:28:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499802334] [2023-12-24 11:28:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 11:28:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 11:28:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 11:28:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 11:28:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 11:28:29,989 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 11:28:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 11:28:30,568 INFO L93 Difference]: Finished difference Result 77 states and 130 transitions. [2023-12-24 11:28:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 11:28:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2023-12-24 11:28:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 11:28:30,592 INFO L225 Difference]: With dead ends: 77 [2023-12-24 11:28:30,592 INFO L226 Difference]: Without dead ends: 38 [2023-12-24 11:28:30,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 11:28:30,597 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 11:28:30,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 11:28:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-24 11:28:30,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-24 11:28:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 11:28:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2023-12-24 11:28:30,623 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 78 [2023-12-24 11:28:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 11:28:30,623 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2023-12-24 11:28:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 11:28:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2023-12-24 11:28:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 11:28:30,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 11:28:30,626 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 11:28:30,634 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 [2023-12-24 11:28:30,833 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 [2023-12-24 11:28:30,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 11:28:30,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 11:28:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1063438060, now seen corresponding path program 1 times [2023-12-24 11:28:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 11:28:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542661301] [2023-12-24 11:28:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 11:28:30,836 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 [2023-12-24 11:28:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 11:28:30,838 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) [2023-12-24 11:28:30,851 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 [2023-12-24 11:28:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 11:28:31,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 11:28:31,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 11:28:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 11:28:31,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 11:28:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 11:28:31,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 11:28:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542661301] [2023-12-24 11:28:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542661301] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 11:28:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 11:28:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-24 11:28:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388852031] [2023-12-24 11:28:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 11:28:31,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 11:28:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 11:28:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 11:28:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 11:28:31,473 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 11:28:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 11:28:32,250 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2023-12-24 11:28:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 11:28:32,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-12-24 11:28:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 11:28:32,268 INFO L225 Difference]: With dead ends: 87 [2023-12-24 11:28:32,268 INFO L226 Difference]: Without dead ends: 50 [2023-12-24 11:28:32,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 11:28:32,269 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 18 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 11:28:32,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 147 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 11:28:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-24 11:28:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2023-12-24 11:28:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 11:28:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2023-12-24 11:28:32,275 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 78 [2023-12-24 11:28:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 11:28:32,276 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2023-12-24 11:28:32,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 11:28:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2023-12-24 11:28:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 11:28:32,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 11:28:32,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 11:28:32,297 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 [2023-12-24 11:28:32,492 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 [2023-12-24 11:28:32,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 11:28:32,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 11:28:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2029098796, now seen corresponding path program 1 times [2023-12-24 11:28:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 11:28:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314108993] [2023-12-24 11:28:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 11:28:32,494 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 [2023-12-24 11:28:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 11:28:32,500 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) [2023-12-24 11:28:32,501 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 [2023-12-24 11:28:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 11:28:32,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 11:28:32,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 11:28:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 11:28:32,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 11:28:32,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 11:28:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314108993] [2023-12-24 11:28:32,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314108993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 11:28:32,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 11:28:32,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 11:28:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317681587] [2023-12-24 11:28:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 11:28:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 11:28:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 11:28:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 11:28:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 11:28:32,900 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 11:28:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 11:28:33,421 INFO L93 Difference]: Finished difference Result 119 states and 167 transitions. [2023-12-24 11:28:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 11:28:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-12-24 11:28:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 11:28:33,423 INFO L225 Difference]: With dead ends: 119 [2023-12-24 11:28:33,423 INFO L226 Difference]: Without dead ends: 79 [2023-12-24 11:28:33,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 11:28:33,424 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 11:28:33,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 107 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 11:28:33,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-24 11:28:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2023-12-24 11:28:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 11:28:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2023-12-24 11:28:33,435 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 78 [2023-12-24 11:28:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 11:28:33,435 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2023-12-24 11:28:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 11:28:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2023-12-24 11:28:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 11:28:33,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 11:28:33,436 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 11:28:33,452 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 [2023-12-24 11:28:33,653 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 [2023-12-24 11:28:33,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 11:28:33,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 11:28:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1802169699, now seen corresponding path program 1 times [2023-12-24 11:28:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 11:28:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711850375] [2023-12-24 11:28:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 11:28:33,654 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 [2023-12-24 11:28:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 11:28:33,657 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) [2023-12-24 11:28:33,678 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 [2023-12-24 11:28:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 11:28:33,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 11:28:33,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 11:29:48,116 WARN L293 SmtUtils]: Spent 31.55s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 11:43:08,031 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 11:43:08,043 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 [2023-12-24 11:43:08,054 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 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 11:43:08,070 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 [2023-12-24 11:43:08,242 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 [2023-12-24 11:43:08,244 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 80 with TraceHistMax 12,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-45-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-24 11:43:08,248 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-24 11:43:08,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 11:43:08,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:43:08 BoogieIcfgContainer [2023-12-24 11:43:08,251 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 11:43:08,252 INFO L158 Benchmark]: Toolchain (without parser) took 879949.11ms. Allocated memory was 411.0MB in the beginning and 1.4GB in the end (delta: 978.3MB). Free memory was 359.7MB in the beginning and 781.0MB in the end (delta: -421.3MB). Peak memory consumption was 865.3MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,252 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 206.6MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 11:43:08,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.13ms. Allocated memory is still 411.0MB. Free memory was 359.4MB in the beginning and 346.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 411.0MB. Free memory was 346.1MB in the beginning and 344.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,253 INFO L158 Benchmark]: Boogie Preprocessor took 35.40ms. Allocated memory is still 411.0MB. Free memory was 344.1MB in the beginning and 341.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,253 INFO L158 Benchmark]: RCFGBuilder took 901.02ms. Allocated memory is still 411.0MB. Free memory was 341.5MB in the beginning and 323.4MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,253 INFO L158 Benchmark]: TraceAbstraction took 878708.00ms. Allocated memory was 411.0MB in the beginning and 1.4GB in the end (delta: 978.3MB). Free memory was 322.7MB in the beginning and 781.0MB in the end (delta: -458.3MB). Peak memory consumption was 827.6MB. Max. memory is 8.0GB. [2023-12-24 11:43:08,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 206.6MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 262.13ms. Allocated memory is still 411.0MB. Free memory was 359.4MB in the beginning and 346.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 411.0MB. Free memory was 346.1MB in the beginning and 344.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.40ms. Allocated memory is still 411.0MB. Free memory was 344.1MB in the beginning and 341.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 901.02ms. Allocated memory is still 411.0MB. Free memory was 341.5MB in the beginning and 323.4MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 878708.00ms. Allocated memory was 411.0MB in the beginning and 1.4GB in the end (delta: 978.3MB). Free memory was 322.7MB in the beginning and 781.0MB in the end (delta: -458.3MB). Peak memory consumption was 827.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 80 with TraceHistMax 12,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-45-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.6s, OverallIterations: 4, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 164 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 818 SizeOfPredicates, 2 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1026/1056 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown