/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_normal_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 23:04:00,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 23:04:00,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 23:04:00,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 23:04:00,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 23:04:00,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 23:04:00,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 23:04:00,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 23:04:00,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 23:04:00,097 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 23:04:00,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 23:04:00,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 23:04:00,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 23:04:00,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 23:04:00,102 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 23:04:00,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 23:04:00,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 23:04:00,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 23:04:00,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 23:04:00,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 23:04:00,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 23:04:00,105 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 23:04:00,106 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 23:04:00,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 23:04:00,106 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 23:04:00,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 23:04:00,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 23:04:00,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 23:04:00,108 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 23:04:00,108 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 23:04:00,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 23:04:00,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 23:04:00,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 23:04:00,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 23:04:00,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 23:04:00,109 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 23:04:00,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 23:04:00,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 23:04:00,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 23:04:00,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 23:04:00,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 23:04:00,301 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 23:04:00,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-4.i [2023-12-22 23:04:01,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 23:04:01,545 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 23:04:01,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-4.i [2023-12-22 23:04:01,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5bf2cbe/6f8b2162267146a086435b51c9dc6208/FLAG3162686ef [2023-12-22 23:04:01,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5bf2cbe/6f8b2162267146a086435b51c9dc6208 [2023-12-22 23:04:01,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 23:04:01,569 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 23:04:01,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 23:04:01,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 23:04:01,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 23:04:01,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c71f8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01, skipping insertion in model container [2023-12-22 23:04:01,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 23:04:01,705 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_normal_file-4.i[912,925] [2023-12-22 23:04:01,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 23:04:01,756 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 23:04:01,764 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_normal_file-4.i[912,925] [2023-12-22 23:04:01,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 23:04:01,795 INFO L206 MainTranslator]: Completed translation [2023-12-22 23:04:01,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01 WrapperNode [2023-12-22 23:04:01,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 23:04:01,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 23:04:01,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 23:04:01,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 23:04:01,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,844 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 140 [2023-12-22 23:04:01,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 23:04:01,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 23:04:01,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 23:04:01,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 23:04:01,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,864 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,874 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]. [2023-12-22 23:04:01,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 23:04:01,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 23:04:01,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 23:04:01,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 23:04:01,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (1/1) ... [2023-12-22 23:04:01,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 23:04:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 23:04:01,912 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) [2023-12-22 23:04:01,942 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 [2023-12-22 23:04:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 23:04:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 23:04:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 23:04:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 23:04:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 23:04:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 23:04:02,012 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 23:04:02,014 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 23:04:02,669 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 23:04:02,705 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 23:04:02,706 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 23:04:02,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:04:02 BoogieIcfgContainer [2023-12-22 23:04:02,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 23:04:02,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 23:04:02,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 23:04:02,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 23:04:02,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:04:01" (1/3) ... [2023-12-22 23:04:02,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd78387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:04:02, skipping insertion in model container [2023-12-22 23:04:02,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:01" (2/3) ... [2023-12-22 23:04:02,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd78387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:04:02, skipping insertion in model container [2023-12-22 23:04:02,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:04:02" (3/3) ... [2023-12-22 23:04:02,745 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-4.i [2023-12-22 23:04:02,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 23:04:02,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 23:04:02,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 23:04:02,813 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;@9494504, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 23:04:02,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 23:04:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 35 states have (on average 1.457142857142857) internal successors, (51), 36 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-22 23:04:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 23:04:02,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:02,826 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:02,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:02,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash -279030631, now seen corresponding path program 1 times [2023-12-22 23:04:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699887362] [2023-12-22 23:04:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:02,843 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 [2023-12-22 23:04:02,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:02,846 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) [2023-12-22 23:04:02,847 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 [2023-12-22 23:04:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:03,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 23:04:03,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-22 23:04:03,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:04:03,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699887362] [2023-12-22 23:04:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699887362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:04:03,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:04:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 23:04:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321917225] [2023-12-22 23:04:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:04:03,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 23:04:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 23:04:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 23:04:03,178 INFO L87 Difference]: Start difference. First operand has 58 states, 35 states have (on average 1.457142857142857) internal successors, (51), 36 states have internal predecessors, (51), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:03,448 INFO L93 Difference]: Finished difference Result 113 states and 200 transitions. [2023-12-22 23:04:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 23:04:03,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-12-22 23:04:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:03,467 INFO L225 Difference]: With dead ends: 113 [2023-12-22 23:04:03,467 INFO L226 Difference]: Without dead ends: 56 [2023-12-22 23:04:03,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 23:04:03,471 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:03,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 23:04:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-22 23:04:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-22 23:04:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-22 23:04:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 85 transitions. [2023-12-22 23:04:03,499 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 85 transitions. Word has length 125 [2023-12-22 23:04:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:03,500 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 85 transitions. [2023-12-22 23:04:03,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 85 transitions. [2023-12-22 23:04:03,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-22 23:04:03,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:03,502 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:03,510 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 [2023-12-22 23:04:03,709 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 [2023-12-22 23:04:03,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:03,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1621605454, now seen corresponding path program 1 times [2023-12-22 23:04:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128533167] [2023-12-22 23:04:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:03,711 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 [2023-12-22 23:04:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:03,713 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) [2023-12-22 23:04:03,717 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 [2023-12-22 23:04:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:03,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 23:04:03,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-22 23:04:04,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:04:04,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128533167] [2023-12-22 23:04:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128533167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:04:04,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:04:04,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 23:04:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325093764] [2023-12-22 23:04:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:04:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 23:04:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 23:04:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 23:04:04,687 INFO L87 Difference]: Start difference. First operand 56 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:05,812 INFO L93 Difference]: Finished difference Result 167 states and 254 transitions. [2023-12-22 23:04:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 23:04:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 126 [2023-12-22 23:04:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:05,828 INFO L225 Difference]: With dead ends: 167 [2023-12-22 23:04:05,828 INFO L226 Difference]: Without dead ends: 112 [2023-12-22 23:04:05,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-22 23:04:05,829 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 65 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:05,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 259 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 23:04:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-22 23:04:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2023-12-22 23:04:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 23:04:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 146 transitions. [2023-12-22 23:04:05,847 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 146 transitions. Word has length 126 [2023-12-22 23:04:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:05,847 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 146 transitions. [2023-12-22 23:04:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 146 transitions. [2023-12-22 23:04:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-22 23:04:05,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:05,849 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:05,855 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 [2023-12-22 23:04:06,055 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 [2023-12-22 23:04:06,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:06,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1972297264, now seen corresponding path program 1 times [2023-12-22 23:04:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787054360] [2023-12-22 23:04:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:06,060 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 [2023-12-22 23:04:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:06,061 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) [2023-12-22 23:04:06,065 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 [2023-12-22 23:04:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 23:04:06,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 179 proven. 99 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2023-12-22 23:04:06,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:04:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 102 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-12-22 23:04:07,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787054360] [2023-12-22 23:04:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787054360] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 23:04:07,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:04:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-12-22 23:04:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327631490] [2023-12-22 23:04:07,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:04:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-22 23:04:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-22 23:04:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-22 23:04:07,009 INFO L87 Difference]: Start difference. First operand 96 states and 146 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-22 23:04:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:08,198 INFO L93 Difference]: Finished difference Result 192 states and 268 transitions. [2023-12-22 23:04:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 23:04:08,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 126 [2023-12-22 23:04:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:08,205 INFO L225 Difference]: With dead ends: 192 [2023-12-22 23:04:08,205 INFO L226 Difference]: Without dead ends: 134 [2023-12-22 23:04:08,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-12-22 23:04:08,206 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 84 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:08,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 235 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 23:04:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-22 23:04:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 115. [2023-12-22 23:04:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 68 states have internal predecessors, (75), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 23:04:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2023-12-22 23:04:08,222 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 126 [2023-12-22 23:04:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:08,223 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2023-12-22 23:04:08,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (38), 3 states have call predecessors, (38), 7 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-22 23:04:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2023-12-22 23:04:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 23:04:08,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:08,225 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:08,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 23:04:08,434 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 [2023-12-22 23:04:08,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:08,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 519772408, now seen corresponding path program 1 times [2023-12-22 23:04:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:08,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007236302] [2023-12-22 23:04:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:08,439 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 [2023-12-22 23:04:08,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:08,440 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) [2023-12-22 23:04:08,464 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 [2023-12-22 23:04:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:08,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 23:04:08,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-12-22 23:04:08,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:04:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-22 23:04:08,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007236302] [2023-12-22 23:04:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007236302] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 23:04:08,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:04:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-22 23:04:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469514256] [2023-12-22 23:04:08,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:04:08,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 23:04:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 23:04:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-22 23:04:08,933 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-22 23:04:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:10,217 INFO L93 Difference]: Finished difference Result 256 states and 340 transitions. [2023-12-22 23:04:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 23:04:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 127 [2023-12-22 23:04:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:10,220 INFO L225 Difference]: With dead ends: 256 [2023-12-22 23:04:10,220 INFO L226 Difference]: Without dead ends: 189 [2023-12-22 23:04:10,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-12-22 23:04:10,221 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:10,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 306 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 23:04:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-22 23:04:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2023-12-22 23:04:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 99 states have (on average 1.101010101010101) internal successors, (109), 99 states have internal predecessors, (109), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-22 23:04:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 229 transitions. [2023-12-22 23:04:10,244 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 229 transitions. Word has length 127 [2023-12-22 23:04:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 229 transitions. [2023-12-22 23:04:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-22 23:04:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 229 transitions. [2023-12-22 23:04:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 23:04:10,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:10,246 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:10,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 23:04:10,458 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 [2023-12-22 23:04:10,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:10,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 519831990, now seen corresponding path program 1 times [2023-12-22 23:04:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209188463] [2023-12-22 23:04:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:10,460 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 [2023-12-22 23:04:10,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:10,462 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) [2023-12-22 23:04:10,463 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 [2023-12-22 23:04:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:10,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 23:04:10,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-12-22 23:04:10,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:04:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-22 23:04:11,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209188463] [2023-12-22 23:04:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209188463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 23:04:11,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:04:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-22 23:04:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283545891] [2023-12-22 23:04:11,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:04:11,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 23:04:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 23:04:11,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-22 23:04:11,230 INFO L87 Difference]: Start difference. First operand 169 states and 229 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-22 23:04:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:12,085 INFO L93 Difference]: Finished difference Result 257 states and 340 transitions. [2023-12-22 23:04:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 23:04:12,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 127 [2023-12-22 23:04:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:12,100 INFO L225 Difference]: With dead ends: 257 [2023-12-22 23:04:12,100 INFO L226 Difference]: Without dead ends: 136 [2023-12-22 23:04:12,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-22 23:04:12,101 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 63 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:12,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 157 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 23:04:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-22 23:04:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2023-12-22 23:04:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 23:04:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2023-12-22 23:04:12,112 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 127 [2023-12-22 23:04:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:12,112 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2023-12-22 23:04:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-22 23:04:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2023-12-22 23:04:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 23:04:12,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:12,113 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:12,120 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 [2023-12-22 23:04:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 23:04:12,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:12,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2018242555, now seen corresponding path program 1 times [2023-12-22 23:04:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:12,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440772176] [2023-12-22 23:04:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:12,321 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 [2023-12-22 23:04:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:12,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 23:04:12,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 23:04:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:12,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 23:04:12,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-22 23:04:12,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 23:04:12,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440772176] [2023-12-22 23:04:12,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440772176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 23:04:12,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 23:04:12,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 23:04:12,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541530485] [2023-12-22 23:04:12,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 23:04:12,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 23:04:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 23:04:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 23:04:12,620 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:13,174 INFO L93 Difference]: Finished difference Result 235 states and 314 transitions. [2023-12-22 23:04:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 23:04:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 127 [2023-12-22 23:04:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:13,176 INFO L225 Difference]: With dead ends: 235 [2023-12-22 23:04:13,176 INFO L226 Difference]: Without dead ends: 174 [2023-12-22 23:04:13,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-22 23:04:13,177 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 95 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:13,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 193 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 23:04:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-22 23:04:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2023-12-22 23:04:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-22 23:04:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 224 transitions. [2023-12-22 23:04:13,190 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 224 transitions. Word has length 127 [2023-12-22 23:04:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:13,190 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 224 transitions. [2023-12-22 23:04:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-22 23:04:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 224 transitions. [2023-12-22 23:04:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-22 23:04:13,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:13,192 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:13,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 23:04:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 23:04:13,399 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:13,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1208895929, now seen corresponding path program 1 times [2023-12-22 23:04:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:13,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136504400] [2023-12-22 23:04:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:13,400 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 [2023-12-22 23:04:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:13,401 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) [2023-12-22 23:04:13,426 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 [2023-12-22 23:04:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:13,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 23:04:13,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 387 proven. 33 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-22 23:04:14,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:04:14,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 23:04:14,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136504400] [2023-12-22 23:04:14,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136504400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-22 23:04:14,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1583961311] [2023-12-22 23:04:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:14,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-22 23:04:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-22 23:04:14,258 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) [2023-12-22 23:04:14,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-22 23:04:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:14,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 23:04:14,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 23:04:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 438 proven. 57 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-22 23:04:15,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 23:04:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1583961311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-22 23:04:15,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 23:04:15,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2023-12-22 23:04:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782447101] [2023-12-22 23:04:15,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 23:04:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-22 23:04:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 23:04:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-22 23:04:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-22 23:04:15,574 INFO L87 Difference]: Start difference. First operand 167 states and 224 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 5 states have call predecessors, (40), 5 states have call successors, (40) [2023-12-22 23:04:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 23:04:18,813 INFO L93 Difference]: Finished difference Result 256 states and 330 transitions. [2023-12-22 23:04:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-22 23:04:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 5 states have call predecessors, (40), 5 states have call successors, (40) Word has length 127 [2023-12-22 23:04:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 23:04:18,815 INFO L225 Difference]: With dead ends: 256 [2023-12-22 23:04:18,816 INFO L226 Difference]: Without dead ends: 137 [2023-12-22 23:04:18,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640 [2023-12-22 23:04:18,817 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 213 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-22 23:04:18,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 238 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-22 23:04:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-22 23:04:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2023-12-22 23:04:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-22 23:04:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 157 transitions. [2023-12-22 23:04:18,832 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 157 transitions. Word has length 127 [2023-12-22 23:04:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 23:04:18,833 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 157 transitions. [2023-12-22 23:04:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 5 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 5 states have call predecessors, (40), 5 states have call successors, (40) [2023-12-22 23:04:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 157 transitions. [2023-12-22 23:04:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-22 23:04:18,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 23:04:18,834 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:04:18,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-22 23:04:19,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 23:04:19,239 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 [2023-12-22 23:04:19,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 23:04:19,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 23:04:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -761419599, now seen corresponding path program 1 times [2023-12-22 23:04:19,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 23:04:19,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648251958] [2023-12-22 23:04:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 23:04:19,241 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 [2023-12-22 23:04:19,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 23:04:19,242 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) [2023-12-22 23:04:19,244 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 [2023-12-22 23:04:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 23:04:19,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-22 23:04:19,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-22 23:18:37,558 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 23:18:37,569 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 23:18:37,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 23:18:37,916 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 [2023-12-22 23:18:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 23:18:38,119 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 129 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-59-3-2-4-3-4-3-4-3-3-2-3-2-4-3-4-3-3-2-3-2-3-2-4-3-4-3-3-2-4-3-3-2-2-2-4-3-3-2-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. [2023-12-22 23:18:38,122 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 23:18:38,124 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 23:18:38,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:18:38 BoogieIcfgContainer [2023-12-22 23:18:38,126 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 23:18:38,126 INFO L158 Benchmark]: Toolchain (without parser) took 876557.09ms. Allocated memory was 297.8MB in the beginning and 2.9GB in the end (delta: 2.6GB). Free memory was 249.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-22 23:18:38,126 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 23:18:38,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.64ms. Allocated memory is still 297.8MB. Free memory was 249.1MB in the beginning and 234.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-22 23:18:38,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.75ms. Allocated memory is still 297.8MB. Free memory was 234.4MB in the beginning and 232.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-22 23:18:38,127 INFO L158 Benchmark]: Boogie Preprocessor took 43.01ms. Allocated memory is still 297.8MB. Free memory was 232.3MB in the beginning and 229.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-22 23:18:38,127 INFO L158 Benchmark]: RCFGBuilder took 817.36ms. Allocated memory is still 297.8MB. Free memory was 228.8MB in the beginning and 205.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-22 23:18:38,127 INFO L158 Benchmark]: TraceAbstraction took 875417.97ms. Allocated memory was 297.8MB in the beginning and 2.9GB in the end (delta: 2.6GB). Free memory was 205.1MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-22 23:18:38,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.64ms. Allocated memory is still 297.8MB. Free memory was 249.1MB in the beginning and 234.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.75ms. Allocated memory is still 297.8MB. Free memory was 234.4MB in the beginning and 232.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.01ms. Allocated memory is still 297.8MB. Free memory was 232.3MB in the beginning and 229.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 817.36ms. Allocated memory is still 297.8MB. Free memory was 228.8MB in the beginning and 205.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 875417.97ms. Allocated memory was 297.8MB in the beginning and 2.9GB in the end (delta: 2.6GB). Free memory was 205.1MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 129 with TraceHistMax 20,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-16-2-3-2-2-2-4-3-2-2-3-2-2-2-3-2-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-3-2-2-2-4-3-3-2-2-2-2-2-2-2-2-2-2-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-59-3-2-4-3-4-3-4-3-3-2-3-2-4-3-4-3-3-2-3-2-3-2-4-3-4-3-3-2-4-3-3-2-2-2-4-3-3-2-3-2-4-3-4-3-4-3-4-3-4-3-4-3-4-3-3-2-4-3-4-3-3-2-3-2-3-2-3-2-2-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 875.3s, OverallIterations: 8, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 599 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 595 mSDsluCounter, 1470 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 915 mSDsCounter, 318 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1565 IncrementalHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 318 mSolverCounterUnsat, 555 mSDtfsCounter, 1565 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 1360 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=4, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 101 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1381 ConstructedInterpolants, 1 QuantifiedInterpolants, 6720 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1697 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 7853/8360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown