/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_loopvsstraightlinecode_100-1loop_file-87.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 22:09:45,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 22:09:45,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 22:09:45,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 22:09:45,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 22:09:45,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 22:09:45,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 22:09:45,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 22:09:45,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 22:09:45,780 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 22:09:45,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 22:09:45,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 22:09:45,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 22:09:45,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 22:09:45,783 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 22:09:45,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 22:09:45,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 22:09:45,784 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 22:09:45,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 22:09:45,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 22:09:45,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 22:09:45,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 22:09:45,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 22:09:45,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 22:09:45,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 22:09:45,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 22:09:45,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 22:09:45,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 22:09:45,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 22:09:45,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:09:45,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 22:09:45,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 22:09:45,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 22:09:45,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 22:09:45,790 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 22:09:45,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 22:09:45,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 22:09:46,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 22:09:46,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 22:09:46,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 22:09:46,018 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 22:09:46,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-87.i [2023-12-23 22:09:47,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 22:09:47,398 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 22:09:47,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-87.i [2023-12-23 22:09:47,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e51359cc/d64dbc1297eb4542ada94195668b409c/FLAGb28e9ec50 [2023-12-23 22:09:47,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e51359cc/d64dbc1297eb4542ada94195668b409c [2023-12-23 22:09:47,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 22:09:47,424 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 22:09:47,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 22:09:47,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 22:09:47,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 22:09:47,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee8572a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47, skipping insertion in model container [2023-12-23 22:09:47,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 22:09:47,605 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_loopvsstraightlinecode_100-1loop_file-87.i[916,929] [2023-12-23 22:09:47,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:09:47,690 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 22:09:47,715 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_loopvsstraightlinecode_100-1loop_file-87.i[916,929] [2023-12-23 22:09:47,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 22:09:47,777 INFO L206 MainTranslator]: Completed translation [2023-12-23 22:09:47,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47 WrapperNode [2023-12-23 22:09:47,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 22:09:47,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 22:09:47,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 22:09:47,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 22:09:47,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,833 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2023-12-23 22:09:47,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 22:09:47,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 22:09:47,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 22:09:47,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 22:09:47,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,876 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 22:09:47,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 22:09:47,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 22:09:47,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 22:09:47,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 22:09:47,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (1/1) ... [2023-12-23 22:09:47,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 22:09:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 22:09:47,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 22:09:47,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 22:09:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 22:09:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 22:09:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 22:09:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 22:09:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 22:09:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 22:09:48,121 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 22:09:48,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 22:09:49,130 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 22:09:49,201 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 22:09:49,201 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 22:09:49,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:09:49 BoogieIcfgContainer [2023-12-23 22:09:49,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 22:09:49,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 22:09:49,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 22:09:49,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 22:09:49,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:09:47" (1/3) ... [2023-12-23 22:09:49,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b319aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:09:49, skipping insertion in model container [2023-12-23 22:09:49,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:09:47" (2/3) ... [2023-12-23 22:09:49,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b319aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:09:49, skipping insertion in model container [2023-12-23 22:09:49,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:09:49" (3/3) ... [2023-12-23 22:09:49,212 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-87.i [2023-12-23 22:09:49,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 22:09:49,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 22:09:49,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 22:09:49,298 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;@5ca4bd80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 22:09:49,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 22:09:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 22:09:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 22:09:49,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:09:49,322 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:09:49,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:09:49,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:09:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1922730438, now seen corresponding path program 1 times [2023-12-23 22:09:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:09:49,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920372842] [2023-12-23 22:09:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:09:49,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:09:49,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 22:09:49,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 22:09:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:09:49,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 22:09:49,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:09:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2023-12-23 22:09:49,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 22:09:49,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:09:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920372842] [2023-12-23 22:09:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920372842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 22:09:49,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 22:09:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 22:09:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126735539] [2023-12-23 22:09:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 22:09:49,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 22:09:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:09:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 22:09:49,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 22:09:49,850 INFO L87 Difference]: Start difference. First operand has 86 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-23 22:09:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:09:50,137 INFO L93 Difference]: Finished difference Result 171 states and 307 transitions. [2023-12-23 22:09:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 22:09:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 209 [2023-12-23 22:09:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:09:50,145 INFO L225 Difference]: With dead ends: 171 [2023-12-23 22:09:50,145 INFO L226 Difference]: Without dead ends: 84 [2023-12-23 22:09:50,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 22:09:50,151 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 22:09:50,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 22:09:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-23 22:09:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-23 22:09:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 48 states have internal predecessors, (64), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 22:09:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 132 transitions. [2023-12-23 22:09:50,189 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 132 transitions. Word has length 209 [2023-12-23 22:09:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:09:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 132 transitions. [2023-12-23 22:09:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-23 22:09:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 132 transitions. [2023-12-23 22:09:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 22:09:50,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:09:50,195 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:09:50,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 22:09:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:50,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:09:50,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:09:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash 179266958, now seen corresponding path program 1 times [2023-12-23 22:09:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:09:50,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753576480] [2023-12-23 22:09:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:09:50,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:09:50,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 22:09:50,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 22:09:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:09:50,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 22:09:50,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:09:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1229 proven. 60 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-12-23 22:09:51,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:09:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 132 proven. 63 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-23 22:09:52,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:09:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753576480] [2023-12-23 22:09:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753576480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 22:09:52,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 22:09:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-23 22:09:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471078229] [2023-12-23 22:09:52,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 22:09:52,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-23 22:09:52,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:09:52,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-23 22:09:52,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-23 22:09:52,131 INFO L87 Difference]: Start difference. First operand 84 states and 132 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2023-12-23 22:09:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:09:54,599 INFO L93 Difference]: Finished difference Result 266 states and 402 transitions. [2023-12-23 22:09:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-23 22:09:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 209 [2023-12-23 22:09:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:09:54,604 INFO L225 Difference]: With dead ends: 266 [2023-12-23 22:09:54,604 INFO L226 Difference]: Without dead ends: 183 [2023-12-23 22:09:54,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2023-12-23 22:09:54,606 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 326 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 22:09:54,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 408 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 22:09:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-23 22:09:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 170. [2023-12-23 22:09:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 99 states have internal predecessors, (125), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 22:09:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 257 transitions. [2023-12-23 22:09:54,652 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 257 transitions. Word has length 209 [2023-12-23 22:09:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:09:54,655 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 257 transitions. [2023-12-23 22:09:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2023-12-23 22:09:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 257 transitions. [2023-12-23 22:09:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 22:09:54,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:09:54,665 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:09:54,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 22:09:54,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:54,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:09:54,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:09:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1409080944, now seen corresponding path program 1 times [2023-12-23 22:09:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:09:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929802875] [2023-12-23 22:09:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:09:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:54,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:09:54,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 22:09:54,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 22:09:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:09:55,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 22:09:55,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:09:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1143 proven. 54 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2023-12-23 22:09:55,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 22:09:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-23 22:09:55,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 22:09:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929802875] [2023-12-23 22:09:55,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929802875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 22:09:55,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 22:09:55,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 22:09:55,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937992203] [2023-12-23 22:09:55,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 22:09:55,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 22:09:55,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 22:09:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 22:09:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 22:09:55,808 INFO L87 Difference]: Start difference. First operand 170 states and 257 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-23 22:09:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 22:09:56,537 INFO L93 Difference]: Finished difference Result 359 states and 531 transitions. [2023-12-23 22:09:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 22:09:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 209 [2023-12-23 22:09:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 22:09:56,541 INFO L225 Difference]: With dead ends: 359 [2023-12-23 22:09:56,542 INFO L226 Difference]: Without dead ends: 190 [2023-12-23 22:09:56,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 22:09:56,544 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 64 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 22:09:56,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 198 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 22:09:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-23 22:09:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2023-12-23 22:09:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 105 states have internal predecessors, (129), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 22:09:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 261 transitions. [2023-12-23 22:09:56,568 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 261 transitions. Word has length 209 [2023-12-23 22:09:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 22:09:56,569 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 261 transitions. [2023-12-23 22:09:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-23 22:09:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 261 transitions. [2023-12-23 22:09:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 22:09:56,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 22:09:56,571 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 22:09:56,586 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 [2023-12-23 22:09:56,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:56,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 22:09:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 22:09:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1606022674, now seen corresponding path program 1 times [2023-12-23 22:09:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 22:09:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147928277] [2023-12-23 22:09:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 22:09:56,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 22:09:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 22:09:56,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 22:09:56,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 22:09:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 22:09:57,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-23 22:09:57,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 22:11:35,397 WARN L293 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 158 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)