/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/array-examples/standard_two_index_07.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:41:23,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:41:23,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 16:41:23,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:41:23,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:41:24,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:41:24,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:41:24,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:41:24,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:41:24,014 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:41:24,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:41:24,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:41:24,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:41:24,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:41:24,016 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:41:24,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:41:24,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:41:24,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:41:24,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:41:24,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:41:24,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:41:24,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:41:24,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:41:24,018 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:41:24,018 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:41:24,019 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:41:24,019 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:41:24,019 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:41:24,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:41:24,019 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:41:24,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:41:24,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:41:24,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:41:24,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:41:24,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:41:24,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:41:24,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:41:24,022 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:41:24,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:41:24,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:41:24,022 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:41:24,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:41:24,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:41:24,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:41:24,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:41:24,251 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:41:24,262 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:41:24,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_07.i [2023-12-21 16:41:25,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:41:25,520 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:41:25,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i [2023-12-21 16:41:25,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c7095b2/5118a2602804421e8b424657abc9c3cf/FLAG29a8e02cd [2023-12-21 16:41:25,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c7095b2/5118a2602804421e8b424657abc9c3cf [2023-12-21 16:41:25,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:41:25,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:41:25,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:41:25,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:41:25,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:41:25,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52feae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25, skipping insertion in model container [2023-12-21 16:41:25,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:41:25,661 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i[814,827] [2023-12-21 16:41:25,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:41:25,687 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:41:25,695 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i[814,827] [2023-12-21 16:41:25,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:41:25,711 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:41:25,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25 WrapperNode [2023-12-21 16:41:25,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:41:25,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:41:25,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:41:25,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:41:25,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,737 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2023-12-21 16:41:25,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:41:25,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:41:25,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:41:25,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:41:25,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,771 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-21 16:41:25,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:41:25,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:41:25,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:41:25,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:41:25,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (1/1) ... [2023-12-21 16:41:25,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:41:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:41:25,808 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) [2023-12-21 16:41:25,831 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 [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:41:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:41:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:41:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 16:41:25,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:41:25,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:41:26,046 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:41:26,065 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:41:26,065 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 16:41:26,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:41:26 BoogieIcfgContainer [2023-12-21 16:41:26,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:41:26,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:41:26,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:41:26,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:41:26,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:41:25" (1/3) ... [2023-12-21 16:41:26,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf80708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:41:26, skipping insertion in model container [2023-12-21 16:41:26,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:41:25" (2/3) ... [2023-12-21 16:41:26,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf80708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:41:26, skipping insertion in model container [2023-12-21 16:41:26,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:41:26" (3/3) ... [2023-12-21 16:41:26,072 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_07.i [2023-12-21 16:41:26,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:41:26,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:41:26,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:41:26,125 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;@4457c0e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:41:26,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:41:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 16:41:26,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:26,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:26,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:26,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1148868036, now seen corresponding path program 1 times [2023-12-21 16:41:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644921364] [2023-12-21 16:41:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:41:26,165 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 [2023-12-21 16:41:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:26,167 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) [2023-12-21 16:41:26,178 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 [2023-12-21 16:41:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:41:26,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:41:26,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:41:26,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:41:26,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644921364] [2023-12-21 16:41:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644921364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:41:26,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:41:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:41:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839871982] [2023-12-21 16:41:26,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:41:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:41:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:41:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:41:26,295 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:26,344 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2023-12-21 16:41:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:41:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 16:41:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:26,350 INFO L225 Difference]: With dead ends: 23 [2023-12-21 16:41:26,350 INFO L226 Difference]: Without dead ends: 11 [2023-12-21 16:41:26,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:41:26,355 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:41:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-21 16:41:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-21 16:41:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-21 16:41:26,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2023-12-21 16:41:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:26,376 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-21 16:41:26,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-21 16:41:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 16:41:26,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:26,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:26,381 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 [2023-12-21 16:41:26,581 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 [2023-12-21 16:41:26,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:26,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -790446873, now seen corresponding path program 1 times [2023-12-21 16:41:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154933772] [2023-12-21 16:41:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:41:26,583 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 [2023-12-21 16:41:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:26,584 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) [2023-12-21 16:41:26,601 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 [2023-12-21 16:41:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:41:26,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:41:26,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:41:26,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:41:26,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154933772] [2023-12-21 16:41:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154933772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:26,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:26,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:41:26,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836229715] [2023-12-21 16:41:26,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:41:26,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:41:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:41:26,696 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:26,779 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-12-21 16:41:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:41:26,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 16:41:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:26,780 INFO L225 Difference]: With dead ends: 34 [2023-12-21 16:41:26,780 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 16:41:26,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 16:41:26,781 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:26,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 16 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:41:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 16:41:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2023-12-21 16:41:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-21 16:41:26,785 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2023-12-21 16:41:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:26,785 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-21 16:41:26,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-21 16:41:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 16:41:26,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:26,786 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:26,797 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 [2023-12-21 16:41:26,997 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 [2023-12-21 16:41:26,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:26,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1476057404, now seen corresponding path program 1 times [2023-12-21 16:41:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11597064] [2023-12-21 16:41:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:41:26,999 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 [2023-12-21 16:41:26,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:27,000 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) [2023-12-21 16:41:27,016 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 [2023-12-21 16:41:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:41:27,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:41:27,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 16:41:27,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 16:41:27,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11597064] [2023-12-21 16:41:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11597064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:27,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:41:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261792929] [2023-12-21 16:41:27,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:41:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:41:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:41:27,152 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:27,343 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-12-21 16:41:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:41:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 16:41:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:27,344 INFO L225 Difference]: With dead ends: 42 [2023-12-21 16:41:27,344 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 16:41:27,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:41:27,346 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:27,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 34 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:41:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 16:41:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2023-12-21 16:41:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-12-21 16:41:27,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2023-12-21 16:41:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-12-21 16:41:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-12-21 16:41:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 16:41:27,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:27,352 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:27,373 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 [2023-12-21 16:41:27,556 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 [2023-12-21 16:41:27,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:27,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1614629916, now seen corresponding path program 2 times [2023-12-21 16:41:27,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:27,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259251720] [2023-12-21 16:41:27,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:41:27,557 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 [2023-12-21 16:41:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:27,562 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) [2023-12-21 16:41:27,563 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 [2023-12-21 16:41:27,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:41:27,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:41:27,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:41:27,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 16:41:27,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 16:41:28,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:28,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259251720] [2023-12-21 16:41:28,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259251720] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:28,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:28,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:41:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748628368] [2023-12-21 16:41:28,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:28,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:41:28,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:41:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:41:28,075 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:28,919 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-12-21 16:41:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:41:28,920 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 16:41:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:28,921 INFO L225 Difference]: With dead ends: 66 [2023-12-21 16:41:28,921 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 16:41:28,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:41:28,922 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:28,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 100 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 16:41:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 16:41:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 36. [2023-12-21 16:41:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-12-21 16:41:28,928 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2023-12-21 16:41:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:28,928 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-12-21 16:41:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-12-21 16:41:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 16:41:28,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:28,929 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:28,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 16:41:29,129 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 [2023-12-21 16:41:29,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:29,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2120482404, now seen corresponding path program 3 times [2023-12-21 16:41:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:29,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85732348] [2023-12-21 16:41:29,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:41:29,131 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 [2023-12-21 16:41:29,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:29,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:41:29,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 16:41:29,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 16:41:29,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:41:29,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:41:29,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:41:29,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 16:41:29,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:29,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85732348] [2023-12-21 16:41:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85732348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:29,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 16:41:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174482713] [2023-12-21 16:41:29,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:41:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:41:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:41:29,358 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:29,662 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2023-12-21 16:41:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:41:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 16:41:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:29,664 INFO L225 Difference]: With dead ends: 94 [2023-12-21 16:41:29,664 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 16:41:29,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:41:29,665 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 128 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:29,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 91 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 16:41:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 16:41:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 42. [2023-12-21 16:41:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-12-21 16:41:29,673 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 34 [2023-12-21 16:41:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:29,674 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-12-21 16:41:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-12-21 16:41:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 16:41:29,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:29,675 INFO L195 NwaCegarLoop]: trace histogram [22, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:29,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 16:41:29,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:41:29,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:29,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -973387996, now seen corresponding path program 4 times [2023-12-21 16:41:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:29,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953100413] [2023-12-21 16:41:29,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:41:29,876 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 [2023-12-21 16:41:29,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:29,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:41:29,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:41:30,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:41:30,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:41:30,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:41:30,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 16:41:30,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 16:41:31,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953100413] [2023-12-21 16:41:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953100413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:31,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:41:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214883275] [2023-12-21 16:41:31,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:41:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:41:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:41:31,437 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:37,204 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2023-12-21 16:41:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:41:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 16:41:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:37,207 INFO L225 Difference]: With dead ends: 124 [2023-12-21 16:41:37,207 INFO L226 Difference]: Without dead ends: 106 [2023-12-21 16:41:37,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:41:37,209 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 355 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:37,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 346 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 16:41:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-21 16:41:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 66. [2023-12-21 16:41:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2023-12-21 16:41:37,217 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 40 [2023-12-21 16:41:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:37,217 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2023-12-21 16:41:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2023-12-21 16:41:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 16:41:37,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:37,218 INFO L195 NwaCegarLoop]: trace histogram [46, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:37,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 16:41:37,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:41:37,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:37,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1456917412, now seen corresponding path program 5 times [2023-12-21 16:41:37,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:37,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460765652] [2023-12-21 16:41:37,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:41:37,429 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 [2023-12-21 16:41:37,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:37,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:41:37,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:41:38,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 16:41:38,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:41:38,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 16:41:38,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:38,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:38,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460765652] [2023-12-21 16:41:38,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460765652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:38,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:38,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 16:41:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948947201] [2023-12-21 16:41:38,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:41:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:41:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:41:38,645 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:40,020 INFO L93 Difference]: Finished difference Result 190 states and 204 transitions. [2023-12-21 16:41:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 16:41:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 16:41:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:40,023 INFO L225 Difference]: With dead ends: 190 [2023-12-21 16:41:40,023 INFO L226 Difference]: Without dead ends: 184 [2023-12-21 16:41:40,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 16:41:40,024 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 532 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:40,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 397 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 16:41:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-21 16:41:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 78. [2023-12-21 16:41:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-12-21 16:41:40,039 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 64 [2023-12-21 16:41:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:40,039 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-12-21 16:41:40,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-12-21 16:41:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 16:41:40,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:40,041 INFO L195 NwaCegarLoop]: trace histogram [46, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:40,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 16:41:40,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-12-21 16:41:40,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:40,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2014440740, now seen corresponding path program 6 times [2023-12-21 16:41:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:40,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929089286] [2023-12-21 16:41:40,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:41:40,252 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 [2023-12-21 16:41:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:40,254 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-21 16:41:40,282 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 (9)] Waiting until timeout for monitored process [2023-12-21 16:41:41,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-12-21 16:41:41,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:41:41,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:41:41,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:41,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:42,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929089286] [2023-12-21 16:41:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929089286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:42,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-21 16:41:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092432756] [2023-12-21 16:41:42,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:41:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:41:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:41:42,780 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:41:49,693 INFO L93 Difference]: Finished difference Result 334 states and 360 transitions. [2023-12-21 16:41:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:41:49,693 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-21 16:41:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:41:49,695 INFO L225 Difference]: With dead ends: 334 [2023-12-21 16:41:49,695 INFO L226 Difference]: Without dead ends: 328 [2023-12-21 16:41:49,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:41:49,696 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2056 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:49,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 1657 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 16:41:49,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-21 16:41:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 102. [2023-12-21 16:41:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2023-12-21 16:41:49,710 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 76 [2023-12-21 16:41:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:41:49,710 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2023-12-21 16:41:49,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:41:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2023-12-21 16:41:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 16:41:49,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:41:49,719 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:41:49,727 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 16:41:49,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 16:41:49,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:41:49,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:41:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash -260739036, now seen corresponding path program 7 times [2023-12-21 16:41:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:41:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855936642] [2023-12-21 16:41:49,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 16:41:49,930 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 [2023-12-21 16:41:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:41:49,931 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-21 16:41:49,972 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 (10)] Waiting until timeout for monitored process [2023-12-21 16:41:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:41:50,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 16:41:50,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:41:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:51,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:41:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:41:55,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:41:55,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855936642] [2023-12-21 16:41:55,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855936642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:41:55,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:41:55,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:41:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787494087] [2023-12-21 16:41:55,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:41:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:41:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:41:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:41:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:41:55,615 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:42:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:42:43,068 INFO L93 Difference]: Finished difference Result 274 states and 325 transitions. [2023-12-21 16:42:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 16:42:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-21 16:42:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:42:43,069 INFO L225 Difference]: With dead ends: 274 [2023-12-21 16:42:43,069 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 16:42:43,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 16:42:43,075 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1587 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 4413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:42:43,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1129 Invalid, 4413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 16:42:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 16:42:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 150. [2023-12-21 16:42:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0201342281879195) internal successors, (152), 149 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:42:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2023-12-21 16:42:43,096 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 100 [2023-12-21 16:42:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:42:43,096 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2023-12-21 16:42:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:42:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2023-12-21 16:42:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 16:42:43,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:42:43,098 INFO L195 NwaCegarLoop]: trace histogram [94, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:42:43,107 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 (10)] Forceful destruction successful, exit code 0 [2023-12-21 16:42:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-21 16:42:43,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:42:43,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:42:43,299 INFO L85 PathProgramCache]: Analyzing trace with hash -865371868, now seen corresponding path program 8 times [2023-12-21 16:42:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:42:43,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650235609] [2023-12-21 16:42:43,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:42:43,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:42:43,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:42:43,301 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-21 16:42:43,304 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 (11)] Waiting until timeout for monitored process [2023-12-21 16:42:43,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:42:43,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:42:43,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 16:42:43,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:42:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:42:46,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:43:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 16:43:04,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:43:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650235609] [2023-12-21 16:43:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650235609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:43:04,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:43:04,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:43:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170224308] [2023-12-21 16:43:04,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:43:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:43:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:43:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:43:04,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:43:04,053 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:50:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:50:43,897 INFO L93 Difference]: Finished difference Result 440 states and 539 transitions. [2023-12-21 16:50:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:50:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-12-21 16:50:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:50:43,899 INFO L225 Difference]: With dead ends: 440 [2023-12-21 16:50:43,899 INFO L226 Difference]: Without dead ends: 386 [2023-12-21 16:50:43,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 468.6s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:50:43,904 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5715 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 13874 mSolverCounterSat, 2858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5715 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 16732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2858 IncrementalHoareTripleChecker+Valid, 13874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-21 16:50:43,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5715 Valid, 4276 Invalid, 16732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2858 Valid, 13874 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-21 16:50:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-21 16:50:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 246. [2023-12-21 16:50:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.0122448979591836) internal successors, (248), 245 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:50:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 248 transitions. [2023-12-21 16:50:43,921 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 248 transitions. Word has length 148 [2023-12-21 16:50:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:50:43,921 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 248 transitions. [2023-12-21 16:50:43,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:50:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 248 transitions. [2023-12-21 16:50:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-21 16:50:43,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:50:43,932 INFO L195 NwaCegarLoop]: trace histogram [190, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:50:43,942 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 (11)] Forceful destruction successful, exit code 0 [2023-12-21 16:50:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-21 16:50:44,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:50:44,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:50:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1080718556, now seen corresponding path program 9 times [2023-12-21 16:50:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:50:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236252393] [2023-12-21 16:50:44,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:50:44,135 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 [2023-12-21 16:50:44,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:50:44,135 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-21 16:50:44,168 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 (12)] Waiting until timeout for monitored process [2023-12-21 16:50:46,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-21 16:50:46,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:50:46,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 16:50:46,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:50:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19226 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:50:47,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:50:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19226 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:50:52,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:50:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236252393] [2023-12-21 16:50:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236252393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:50:52,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:50:52,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2023-12-21 16:50:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275196033] [2023-12-21 16:50:52,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:50:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:50:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:50:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:50:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:50:52,498 INFO L87 Difference]: Start difference. First operand 246 states and 248 transitions. Second operand has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:51:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:51:42,059 INFO L93 Difference]: Finished difference Result 766 states and 816 transitions. [2023-12-21 16:51:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 16:51:42,059 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2023-12-21 16:51:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:51:42,062 INFO L225 Difference]: With dead ends: 766 [2023-12-21 16:51:42,062 INFO L226 Difference]: Without dead ends: 760 [2023-12-21 16:51:42,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=6903, Invalid=13403, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 16:51:42,063 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 9712 mSDsluCounter, 6624 mSDsCounter, 0 mSdLazyCounter, 7017 mSolverCounterSat, 3636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9712 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 10653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3636 IncrementalHoareTripleChecker+Valid, 7017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:51:42,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9712 Valid, 6769 Invalid, 10653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3636 Valid, 7017 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-21 16:51:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-21 16:51:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 294. [2023-12-21 16:51:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 293 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:51:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 296 transitions. [2023-12-21 16:51:42,077 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 296 transitions. Word has length 244 [2023-12-21 16:51:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:51:42,078 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 296 transitions. [2023-12-21 16:51:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:51:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 296 transitions. [2023-12-21 16:51:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-21 16:51:42,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:51:42,081 INFO L195 NwaCegarLoop]: trace histogram [190, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:51:42,104 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 (12)] Forceful destruction successful, exit code 0 [2023-12-21 16:51:42,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-21 16:51:42,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:51:42,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:51:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -372272860, now seen corresponding path program 10 times [2023-12-21 16:51:42,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:51:42,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402598695] [2023-12-21 16:51:42,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:51:42,293 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 [2023-12-21 16:51:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:51:42,294 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-21 16:51:42,298 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 (13)] Waiting until timeout for monitored process [2023-12-21 16:51:42,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:51:42,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:51:42,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:51:42,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:51:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22610 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 16:51:54,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:53:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22610 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 16:53:12,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:53:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402598695] [2023-12-21 16:53:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402598695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:53:12,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:53:12,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:53:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026387860] [2023-12-21 16:53:12,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:53:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:53:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:53:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:53:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:53:12,561 INFO L87 Difference]: Start difference. First operand 294 states and 296 transitions. Second operand has 384 states, 384 states have (on average 1.0182291666666667) internal successors, (391), 383 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:53:58,670 WARN L293 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:54:28,729 WARN L293 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:54:56,917 WARN L293 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:55:24,561 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:55:53,485 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 16:56:07,856 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 [2023-12-21 16:56:07,856 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 16:56:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-21 16:56:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 229.3s TimeCoverageRelationStatistics Valid=39166, Invalid=111766, Unknown=0, NotChecked=0, Total=150932 [2023-12-21 16:56:07,942 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:56:07,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36678 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-12-21 16:56:07,944 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:56:07,965 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 (13)] Ended with exit code 0 [2023-12-21 16:56:08,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-21 16:56:08,147 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (294states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. [2023-12-21 16:56:08,153 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2023-12-21 16:56:08,155 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:56:08,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:56:08 BoogieIcfgContainer [2023-12-21 16:56:08,158 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:56:08,158 INFO L158 Benchmark]: Toolchain (without parser) took 882620.98ms. Allocated memory is still 288.4MB. Free memory was 237.5MB in the beginning and 41.1MB in the end (delta: 196.4MB). Peak memory consumption was 204.7MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,159 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 181.4MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:56:08,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.22ms. Allocated memory is still 288.4MB. Free memory was 237.5MB in the beginning and 226.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.97ms. Allocated memory is still 288.4MB. Free memory was 226.0MB in the beginning and 224.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,160 INFO L158 Benchmark]: Boogie Preprocessor took 42.09ms. Allocated memory is still 288.4MB. Free memory was 224.3MB in the beginning and 222.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,160 INFO L158 Benchmark]: RCFGBuilder took 285.53ms. Allocated memory is still 288.4MB. Free memory was 222.2MB in the beginning and 209.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,160 INFO L158 Benchmark]: TraceAbstraction took 882090.89ms. Allocated memory is still 288.4MB. Free memory was 209.0MB in the beginning and 41.1MB in the end (delta: 168.0MB). Peak memory consumption was 176.3MB. Max. memory is 8.0GB. [2023-12-21 16:56:08,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 181.4MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.22ms. Allocated memory is still 288.4MB. Free memory was 237.5MB in the beginning and 226.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.97ms. Allocated memory is still 288.4MB. Free memory was 226.0MB in the beginning and 224.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.09ms. Allocated memory is still 288.4MB. Free memory was 224.3MB in the beginning and 222.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 285.53ms. Allocated memory is still 288.4MB. Free memory was 222.2MB in the beginning and 209.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 882090.89ms. Allocated memory is still 288.4MB. Free memory was 209.0MB in the beginning and 41.1MB in the end (delta: 168.0MB). Peak memory consumption was 176.3MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (294states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.0s, OverallIterations: 12, TraceHistogramMax: 190, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 747.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20250 SdHoareTripleChecker+Valid, 44.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20250 mSDsluCounter, 14829 SdHoareTripleChecker+Invalid, 38.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14433 mSDsCounter, 8617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65036 IncrementalHoareTripleChecker+Invalid, 73653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8617 mSolverCounterUnsat, 396 mSDtfsCounter, 65036 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2418 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 1187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 808.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=11, InterpolantAutomatonStates: 563, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 1134 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 125.6s InterpolantComputationTime, 1049 NumberOfCodeBlocks, 885 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 2067 ConstructedInterpolants, 0 QuantifiedInterpolants, 5146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4683 ConjunctsInSsa, 478 ConjunctsInUnsatCore, 23 InterpolantComputations, 1 PerfectInterpolantSequences, 54496/105314 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