/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 03:36:47,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 03:36:47,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 03:36:47,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 03:36:47,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 03:36:47,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 03:36:47,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 03:36:47,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 03:36:47,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 03:36:47,814 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 03:36:47,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 03:36:47,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 03:36:47,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 03:36:47,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 03:36:47,817 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 03:36:47,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 03:36:47,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 03:36:47,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 03:36:47,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 03:36:47,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 03:36:47,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 03:36:47,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 03:36:47,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 03:36:47,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 03:36:47,820 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 03:36:47,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 03:36:47,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 03:36:47,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 03:36:47,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:36:47,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 03:36:47,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 03:36:47,823 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 03:36:48,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 03:36:48,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 03:36:48,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 03:36:48,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 03:36:48,052 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 03:36:48,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-42.i [2023-12-23 03:36:49,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 03:36:49,309 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 03:36:49,310 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-42.i [2023-12-23 03:36:49,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c70f9bb5/9623549bea914159aeafbb20c1393ca6/FLAGd94d4b638 [2023-12-23 03:36:49,329 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c70f9bb5/9623549bea914159aeafbb20c1393ca6 [2023-12-23 03:36:49,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 03:36:49,332 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 03:36:49,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 03:36:49,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 03:36:49,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 03:36:49,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cac2f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49, skipping insertion in model container [2023-12-23 03:36:49,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 03:36:49,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-42.i[915,928] [2023-12-23 03:36:49,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:36:49,568 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 03:36:49,580 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-42.i[915,928] [2023-12-23 03:36:49,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:36:49,654 INFO L206 MainTranslator]: Completed translation [2023-12-23 03:36:49,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49 WrapperNode [2023-12-23 03:36:49,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 03:36:49,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 03:36:49,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 03:36:49,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 03:36:49,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,693 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 201 [2023-12-23 03:36:49,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 03:36:49,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 03:36:49,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 03:36:49,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 03:36:49,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,721 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 03:36:49,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 03:36:49,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 03:36:49,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 03:36:49,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 03:36:49,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (1/1) ... [2023-12-23 03:36:49,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:36:49,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 03:36:49,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 03:36:49,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 03:36:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 03:36:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 03:36:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 03:36:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 03:36:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 03:36:49,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 03:36:49,927 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 03:36:49,929 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 03:36:50,459 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 03:36:50,513 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 03:36:50,514 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 03:36:50,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:36:50 BoogieIcfgContainer [2023-12-23 03:36:50,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 03:36:50,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 03:36:50,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 03:36:50,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 03:36:50,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:36:49" (1/3) ... [2023-12-23 03:36:50,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0c05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:36:50, skipping insertion in model container [2023-12-23 03:36:50,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:36:49" (2/3) ... [2023-12-23 03:36:50,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0c05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:36:50, skipping insertion in model container [2023-12-23 03:36:50,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:36:50" (3/3) ... [2023-12-23 03:36:50,521 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-42.i [2023-12-23 03:36:50,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 03:36:50,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 03:36:50,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 03:36:50,579 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;@2a81029b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 03:36:50,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 03:36:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 50 states have internal predecessors, (70), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-23 03:36:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-23 03:36:50,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:36:50,599 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:36:50,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:36:50,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:36:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 135550756, now seen corresponding path program 1 times [2023-12-23 03:36:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:36:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043438269] [2023-12-23 03:36:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:50,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:50,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:36:50,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:36:50,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 03:36:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:50,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 03:36:50,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 587 proven. 24 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2023-12-23 03:36:51,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:36:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:36:51,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:36:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043438269] [2023-12-23 03:36:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043438269] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 03:36:51,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:36:51,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-23 03:36:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077385357] [2023-12-23 03:36:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:36:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:36:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:36:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:36:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-23 03:36:51,491 INFO L87 Difference]: Start difference. First operand has 83 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 50 states have internal predecessors, (70), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:36:51,755 INFO L93 Difference]: Finished difference Result 229 states and 425 transitions. [2023-12-23 03:36:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:36:51,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 195 [2023-12-23 03:36:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:36:51,765 INFO L225 Difference]: With dead ends: 229 [2023-12-23 03:36:51,766 INFO L226 Difference]: Without dead ends: 147 [2023-12-23 03:36:51,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-23 03:36:51,781 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 100 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 03:36:51,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 236 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 03:36:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-23 03:36:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2023-12-23 03:36:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 86 states have internal predecessors, (115), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-23 03:36:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 227 transitions. [2023-12-23 03:36:51,905 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 227 transitions. Word has length 195 [2023-12-23 03:36:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:36:51,906 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 227 transitions. [2023-12-23 03:36:51,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 227 transitions. [2023-12-23 03:36:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-23 03:36:51,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:36:51,909 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:36:51,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 03:36:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:52,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:36:52,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:36:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash -885517598, now seen corresponding path program 1 times [2023-12-23 03:36:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:36:52,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447337168] [2023-12-23 03:36:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:52,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:36:52,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:36:52,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 03:36:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:52,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 03:36:52,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:36:52,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:36:52,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:36:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447337168] [2023-12-23 03:36:52,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447337168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:36:52,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:36:52,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 03:36:52,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160431434] [2023-12-23 03:36:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:36:52,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 03:36:52,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:36:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 03:36:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 03:36:52,712 INFO L87 Difference]: Start difference. First operand 144 states and 227 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:36:53,007 INFO L93 Difference]: Finished difference Result 394 states and 618 transitions. [2023-12-23 03:36:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 03:36:53,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 195 [2023-12-23 03:36:53,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:36:53,017 INFO L225 Difference]: With dead ends: 394 [2023-12-23 03:36:53,017 INFO L226 Difference]: Without dead ends: 251 [2023-12-23 03:36:53,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 03:36:53,019 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 90 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 03:36:53,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 366 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 03:36:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-23 03:36:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 213. [2023-12-23 03:36:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 122 states have internal predecessors, (157), 87 states have call successors, (87), 4 states have call predecessors, (87), 4 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-23 03:36:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 331 transitions. [2023-12-23 03:36:53,041 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 331 transitions. Word has length 195 [2023-12-23 03:36:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:36:53,042 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 331 transitions. [2023-12-23 03:36:53,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:53,042 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 331 transitions. [2023-12-23 03:36:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-23 03:36:53,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:36:53,044 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:36:53,055 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 (3)] Ended with exit code 0 [2023-12-23 03:36:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:53,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:36:53,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:36:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash -435714880, now seen corresponding path program 1 times [2023-12-23 03:36:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:36:53,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099460862] [2023-12-23 03:36:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:53,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:36:53,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:36:53,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 03:36:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:53,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:36:53,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:36:54,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:36:54,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:36:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099460862] [2023-12-23 03:36:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099460862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:36:54,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:36:54,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 03:36:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019882287] [2023-12-23 03:36:54,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:36:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 03:36:54,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:36:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 03:36:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 03:36:54,388 INFO L87 Difference]: Start difference. First operand 213 states and 331 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:36:55,118 INFO L93 Difference]: Finished difference Result 531 states and 830 transitions. [2023-12-23 03:36:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 03:36:55,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2023-12-23 03:36:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:36:55,133 INFO L225 Difference]: With dead ends: 531 [2023-12-23 03:36:55,133 INFO L226 Difference]: Without dead ends: 388 [2023-12-23 03:36:55,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 03:36:55,135 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 120 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 03:36:55,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 432 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 03:36:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-23 03:36:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 354. [2023-12-23 03:36:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 204 states have (on average 1.3137254901960784) internal successors, (268), 206 states have internal predecessors, (268), 143 states have call successors, (143), 6 states have call predecessors, (143), 6 states have return successors, (143), 141 states have call predecessors, (143), 143 states have call successors, (143) [2023-12-23 03:36:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 554 transitions. [2023-12-23 03:36:55,176 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 554 transitions. Word has length 196 [2023-12-23 03:36:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:36:55,177 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 554 transitions. [2023-12-23 03:36:55,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 554 transitions. [2023-12-23 03:36:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-23 03:36:55,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:36:55,179 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:36:55,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-23 03:36:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:55,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:36:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:36:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1446832130, now seen corresponding path program 1 times [2023-12-23 03:36:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:36:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901924604] [2023-12-23 03:36:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:55,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:36:55,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:36:55,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 03:36:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:55,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:36:55,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:36:55,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:36:55,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:36:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901924604] [2023-12-23 03:36:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901924604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:36:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:36:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 03:36:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159490065] [2023-12-23 03:36:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:36:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:36:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:36:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:36:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 03:36:55,725 INFO L87 Difference]: Start difference. First operand 354 states and 554 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:36:55,940 INFO L93 Difference]: Finished difference Result 638 states and 1003 transitions. [2023-12-23 03:36:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:36:55,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2023-12-23 03:36:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:36:55,951 INFO L225 Difference]: With dead ends: 638 [2023-12-23 03:36:55,952 INFO L226 Difference]: Without dead ends: 354 [2023-12-23 03:36:55,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 03:36:55,953 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 11 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 03:36:55,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 225 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 03:36:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-23 03:36:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-12-23 03:36:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 204 states have (on average 1.2941176470588236) internal successors, (264), 206 states have internal predecessors, (264), 143 states have call successors, (143), 6 states have call predecessors, (143), 6 states have return successors, (143), 141 states have call predecessors, (143), 143 states have call successors, (143) [2023-12-23 03:36:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 550 transitions. [2023-12-23 03:36:55,993 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 550 transitions. Word has length 196 [2023-12-23 03:36:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:36:55,994 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 550 transitions. [2023-12-23 03:36:55,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:36:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 550 transitions. [2023-12-23 03:36:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-23 03:36:55,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:36:55,996 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:36:56,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 03:36:56,209 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 [2023-12-23 03:36:56,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:36:56,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:36:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2038788540, now seen corresponding path program 1 times [2023-12-23 03:36:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:36:56,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604172353] [2023-12-23 03:36:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:56,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:36:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:36:56,211 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) [2023-12-23 03:36:56,234 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 [2023-12-23 03:36:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:56,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 03:36:56,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 258 proven. 84 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-23 03:36:57,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:36:58,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:36:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604172353] [2023-12-23 03:36:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604172353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:36:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [178064288] [2023-12-23 03:36:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:36:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:36:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:36:58,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:36:58,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 03:36:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:36:59,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:36:59,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:36:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:36:59,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:36:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [178064288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:36:59,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:36:59,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-23 03:36:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225949451] [2023-12-23 03:36:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:36:59,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 03:36:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:36:59,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 03:36:59,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-23 03:36:59,965 INFO L87 Difference]: Start difference. First operand 354 states and 550 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:37:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:37:03,575 INFO L93 Difference]: Finished difference Result 903 states and 1384 transitions. [2023-12-23 03:37:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 03:37:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2023-12-23 03:37:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:37:03,595 INFO L225 Difference]: With dead ends: 903 [2023-12-23 03:37:03,595 INFO L226 Difference]: Without dead ends: 760 [2023-12-23 03:37:03,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 03:37:03,597 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 181 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-23 03:37:03,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 514 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-23 03:37:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-23 03:37:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 678. [2023-12-23 03:37:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 406 states have (on average 1.3103448275862069) internal successors, (532), 412 states have internal predecessors, (532), 259 states have call successors, (259), 12 states have call predecessors, (259), 12 states have return successors, (259), 253 states have call predecessors, (259), 259 states have call successors, (259) [2023-12-23 03:37:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1050 transitions. [2023-12-23 03:37:03,666 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1050 transitions. Word has length 196 [2023-12-23 03:37:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:37:03,667 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1050 transitions. [2023-12-23 03:37:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:37:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1050 transitions. [2023-12-23 03:37:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-23 03:37:03,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:37:03,668 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:37:03,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 03:37:03,885 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 [2023-12-23 03:37:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:37:04,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:37:04,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:37:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1998013318, now seen corresponding path program 1 times [2023-12-23 03:37:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:37:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494762818] [2023-12-23 03:37:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:37:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:37:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:37:04,087 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) [2023-12-23 03:37:04,108 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 [2023-12-23 03:37:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:37:04,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 03:37:04,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:37:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 258 proven. 84 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-23 03:37:05,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:37:06,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:37:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494762818] [2023-12-23 03:37:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494762818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:37:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [444214592] [2023-12-23 03:37:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:37:06,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:37:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:37:06,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:37:06,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 03:37:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:37:07,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 03:37:07,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:37:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-23 03:37:08,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:37:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [444214592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:37:08,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 03:37:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-23 03:37:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835410618] [2023-12-23 03:37:08,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:37:08,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 03:37:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:37:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 03:37:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-23 03:37:08,342 INFO L87 Difference]: Start difference. First operand 678 states and 1050 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:37:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:37:11,391 INFO L93 Difference]: Finished difference Result 1155 states and 1788 transitions. [2023-12-23 03:37:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 03:37:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2023-12-23 03:37:11,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:37:11,397 INFO L225 Difference]: With dead ends: 1155 [2023-12-23 03:37:11,397 INFO L226 Difference]: Without dead ends: 871 [2023-12-23 03:37:11,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 03:37:11,400 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 132 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:37:11,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 431 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-23 03:37:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-23 03:37:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2023-12-23 03:37:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 489 states have (on average 1.3067484662576687) internal successors, (639), 496 states have internal predecessors, (639), 315 states have call successors, (315), 14 states have call predecessors, (315), 14 states have return successors, (315), 308 states have call predecessors, (315), 315 states have call successors, (315) [2023-12-23 03:37:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1269 transitions. [2023-12-23 03:37:11,459 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1269 transitions. Word has length 196 [2023-12-23 03:37:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:37:11,460 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1269 transitions. [2023-12-23 03:37:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-23 03:37:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1269 transitions. [2023-12-23 03:37:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-23 03:37:11,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:37:11,461 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:37:11,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-23 03:37:11,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-23 03:37:11,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 03:37:11,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:37:11,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:37:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -425267931, now seen corresponding path program 1 times [2023-12-23 03:37:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:37:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457147871] [2023-12-23 03:37:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:37:11,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:37:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:37:11,876 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) [2023-12-23 03:37:11,878 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 [2023-12-23 03:37:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:37:12,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 03:37:12,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:37:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 258 proven. 84 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-23 03:37:12,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:37:13,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:37:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457147871] [2023-12-23 03:37:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457147871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:37:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [70746863] [2023-12-23 03:37:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:37:13,264 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:37:13,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:37:13,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:37:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 03:37:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:37:14,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 03:37:14,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:37:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 258 proven. 84 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2023-12-23 03:37:14,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:37:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [70746863] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:37:14,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:37:14,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-23 03:37:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154471219] [2023-12-23 03:37:14,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:37:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 03:37:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:37:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 03:37:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-23 03:37:14,957 INFO L87 Difference]: Start difference. First operand 819 states and 1269 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 03:37:16,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:37:16,136 INFO L93 Difference]: Finished difference Result 1076 states and 1631 transitions. [2023-12-23 03:37:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-23 03:37:16,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2023-12-23 03:37:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:37:16,150 INFO L225 Difference]: With dead ends: 1076 [2023-12-23 03:37:16,150 INFO L226 Difference]: Without dead ends: 750 [2023-12-23 03:37:16,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2023-12-23 03:37:16,151 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 169 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 03:37:16,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 612 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 03:37:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-12-23 03:37:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 662. [2023-12-23 03:37:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 391 states have (on average 1.2813299232736572) internal successors, (501), 395 states have internal predecessors, (501), 255 states have call successors, (255), 15 states have call predecessors, (255), 15 states have return successors, (255), 251 states have call predecessors, (255), 255 states have call successors, (255) [2023-12-23 03:37:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1011 transitions. [2023-12-23 03:37:16,229 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1011 transitions. Word has length 197 [2023-12-23 03:37:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:37:16,230 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1011 transitions. [2023-12-23 03:37:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 03:37:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1011 transitions. [2023-12-23 03:37:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-23 03:37:16,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:37:16,232 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 03:37:16,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 03:37:16,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-23 03:37:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 03:37:16,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:37:16,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:37:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -32240921, now seen corresponding path program 1 times [2023-12-23 03:37:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:37:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568246344] [2023-12-23 03:37:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:37:16,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:37:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:37:16,655 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) [2023-12-23 03:37:16,664 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 [2023-12-23 03:37:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:37:16,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-23 03:37:16,969 INFO L285 TraceCheckSpWp]: Computing forward predicates...