/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:32:11,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:32:11,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:32:11,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:32:11,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:32:11,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:32:11,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:32:11,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:32:11,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:32:11,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:32:11,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:32:11,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:32:11,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:32:11,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:32:11,950 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:32:11,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:32:11,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:32:11,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:32:11,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:32:11,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:32:11,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:32:11,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:32:11,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:32:11,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:32:11,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:32:11,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:32:11,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:32:11,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:32:11,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:32:11,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:32:11,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:32:11,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:32:11,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:32:11,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:32:11,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:32:11,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:32:11,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:32:11,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:32:11,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:32:12,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:32:12,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:32:12,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:32:12,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:32:12,151 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:32:12,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2023-12-15 20:32:13,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:32:13,492 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:32:13,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2023-12-15 20:32:13,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fecb875ed/b87b9a698a5140a08e14fd56d3262df5/FLAG044046564 [2023-12-15 20:32:13,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fecb875ed/b87b9a698a5140a08e14fd56d3262df5 [2023-12-15 20:32:13,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:32:13,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:32:13,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:32:13,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:32:13,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:32:13,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:32:13" (1/1) ... [2023-12-15 20:32:13,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1a3105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:13, skipping insertion in model container [2023-12-15 20:32:13,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:32:13" (1/1) ... [2023-12-15 20:32:13,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:32:13,756 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_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2023-12-15 20:32:13,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:32:13,906 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:32:13,928 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_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2023-12-15 20:32:14,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:32:14,063 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:32:14,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14 WrapperNode [2023-12-15 20:32:14,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:32:14,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:32:14,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:32:14,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:32:14,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,122 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2023-12-15 20:32:14,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:32:14,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:32:14,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:32:14,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:32:14,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,149 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]. [2023-12-15 20:32:14,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:32:14,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:32:14,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:32:14,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:32:14,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (1/1) ... [2023-12-15 20:32:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:32:14,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:14,229 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) [2023-12-15 20:32:14,235 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 [2023-12-15 20:32:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:32:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:32:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:32:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:32:14,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:32:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:32:14,339 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:32:14,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:32:14,707 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:32:14,740 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:32:14,740 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:32:14,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:32:14 BoogieIcfgContainer [2023-12-15 20:32:14,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:32:14,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:32:14,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:32:14,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:32:14,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:32:13" (1/3) ... [2023-12-15 20:32:14,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:32:14, skipping insertion in model container [2023-12-15 20:32:14,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:32:14" (2/3) ... [2023-12-15 20:32:14,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:32:14, skipping insertion in model container [2023-12-15 20:32:14,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:32:14" (3/3) ... [2023-12-15 20:32:14,748 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2023-12-15 20:32:14,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:32:14,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:32:14,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:32:14,831 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;@4a14ce60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:32:14,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:32:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 20:32:14,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-15 20:32:14,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:14,855 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:14,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:14,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 752032013, now seen corresponding path program 1 times [2023-12-15 20:32:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:14,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941004326] [2023-12-15 20:32:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:15,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:32:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941004326] [2023-12-15 20:32:15,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:32:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189094597] [2023-12-15 20:32:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:15,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:15,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:15,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:32:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:15,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:32:15,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-12-15 20:32:15,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:32:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189094597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:32:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:32:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:32:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639699430] [2023-12-15 20:32:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:32:15,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:32:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:32:15,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:32:15,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:32:15,288 INFO L87 Difference]: Start difference. First operand has 96 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:32:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:32:15,339 INFO L93 Difference]: Finished difference Result 189 states and 348 transitions. [2023-12-15 20:32:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:32:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 211 [2023-12-15 20:32:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:32:15,348 INFO L225 Difference]: With dead ends: 189 [2023-12-15 20:32:15,348 INFO L226 Difference]: Without dead ends: 94 [2023-12-15 20:32:15,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:32:15,358 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:32:15,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:32:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-15 20:32:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-15 20:32:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 20:32:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 152 transitions. [2023-12-15 20:32:15,416 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 152 transitions. Word has length 211 [2023-12-15 20:32:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:32:15,417 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 152 transitions. [2023-12-15 20:32:15,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-15 20:32:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 152 transitions. [2023-12-15 20:32:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-15 20:32:15,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:15,421 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:15,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:32:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:32:15,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:15,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1145962325, now seen corresponding path program 1 times [2023-12-15 20:32:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741994606] [2023-12-15 20:32:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:15,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:32:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473577958] [2023-12-15 20:32:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:15,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:15,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:15,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:32:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:15,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:32:15,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:32:16,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:32:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:32:16,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741994606] [2023-12-15 20:32:16,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:32:16,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473577958] [2023-12-15 20:32:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473577958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:32:16,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:32:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:32:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074952507] [2023-12-15 20:32:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:32:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:32:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:32:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:32:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:32:16,088 INFO L87 Difference]: Start difference. First operand 94 states and 152 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:32:16,143 INFO L93 Difference]: Finished difference Result 280 states and 454 transitions. [2023-12-15 20:32:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:32:16,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 211 [2023-12-15 20:32:16,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:32:16,145 INFO L225 Difference]: With dead ends: 280 [2023-12-15 20:32:16,146 INFO L226 Difference]: Without dead ends: 187 [2023-12-15 20:32:16,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:32:16,147 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 51 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:32:16,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 318 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:32:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-15 20:32:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-12-15 20:32:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 114 states have (on average 1.4385964912280702) internal successors, (164), 114 states have internal predecessors, (164), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 20:32:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 300 transitions. [2023-12-15 20:32:16,170 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 300 transitions. Word has length 211 [2023-12-15 20:32:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:32:16,170 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 300 transitions. [2023-12-15 20:32:16,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 300 transitions. [2023-12-15 20:32:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-15 20:32:16,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:16,173 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:16,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:32:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:32:16,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:16,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1460061229, now seen corresponding path program 1 times [2023-12-15 20:32:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768588151] [2023-12-15 20:32:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:16,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:32:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761468118] [2023-12-15 20:32:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:16,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:16,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:32:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:16,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:32:16,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:32:16,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:32:16,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:32:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768588151] [2023-12-15 20:32:16,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:32:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761468118] [2023-12-15 20:32:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761468118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:32:16,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:32:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:32:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788343264] [2023-12-15 20:32:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:32:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:32:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:32:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:32:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:32:16,759 INFO L87 Difference]: Start difference. First operand 185 states and 300 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:32:16,910 INFO L93 Difference]: Finished difference Result 495 states and 805 transitions. [2023-12-15 20:32:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:32:16,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 211 [2023-12-15 20:32:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:32:16,913 INFO L225 Difference]: With dead ends: 495 [2023-12-15 20:32:16,913 INFO L226 Difference]: Without dead ends: 311 [2023-12-15 20:32:16,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:32:16,915 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 110 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:32:16,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 443 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:32:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-15 20:32:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 277. [2023-12-15 20:32:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 171 states have (on average 1.4444444444444444) internal successors, (247), 171 states have internal predecessors, (247), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 20:32:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 451 transitions. [2023-12-15 20:32:16,944 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 451 transitions. Word has length 211 [2023-12-15 20:32:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:32:16,945 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 451 transitions. [2023-12-15 20:32:16,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 451 transitions. [2023-12-15 20:32:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-15 20:32:16,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:16,947 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:16,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:32:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:17,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:17,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1754448869, now seen corresponding path program 1 times [2023-12-15 20:32:17,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071256442] [2023-12-15 20:32:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:17,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:32:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589028026] [2023-12-15 20:32:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:17,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:17,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:17,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:17,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:32:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:17,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:32:17,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-15 20:32:17,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:32:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:32:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071256442] [2023-12-15 20:32:17,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:32:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589028026] [2023-12-15 20:32:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589028026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:32:17,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:32:17,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:32:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222285154] [2023-12-15 20:32:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:32:17,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:32:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:32:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:32:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:32:17,772 INFO L87 Difference]: Start difference. First operand 277 states and 451 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:32:17,947 INFO L93 Difference]: Finished difference Result 661 states and 1070 transitions. [2023-12-15 20:32:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:32:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 212 [2023-12-15 20:32:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:32:17,951 INFO L225 Difference]: With dead ends: 661 [2023-12-15 20:32:17,951 INFO L226 Difference]: Without dead ends: 477 [2023-12-15 20:32:17,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:32:17,952 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 166 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:32:17,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 554 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:32:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-15 20:32:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 459. [2023-12-15 20:32:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 283 states have (on average 1.431095406360424) internal successors, (405), 283 states have internal predecessors, (405), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-15 20:32:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 745 transitions. [2023-12-15 20:32:17,991 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 745 transitions. Word has length 212 [2023-12-15 20:32:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:32:17,991 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 745 transitions. [2023-12-15 20:32:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-15 20:32:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 745 transitions. [2023-12-15 20:32:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-15 20:32:17,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:17,993 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:18,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:32:18,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:18,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:18,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 258069692, now seen corresponding path program 1 times [2023-12-15 20:32:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309144272] [2023-12-15 20:32:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:18,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:32:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786074608] [2023-12-15 20:32:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:18,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:18,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:18,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:32:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:18,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 20:32:18,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1065 proven. 63 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2023-12-15 20:32:18,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:32:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-15 20:32:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:32:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309144272] [2023-12-15 20:32:19,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:32:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786074608] [2023-12-15 20:32:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786074608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:32:19,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:32:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-12-15 20:32:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339522962] [2023-12-15 20:32:19,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:32:19,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 20:32:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:32:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 20:32:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:32:19,211 INFO L87 Difference]: Start difference. First operand 459 states and 745 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:32:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:32:20,232 INFO L93 Difference]: Finished difference Result 1639 states and 2538 transitions. [2023-12-15 20:32:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-15 20:32:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 213 [2023-12-15 20:32:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:32:20,252 INFO L225 Difference]: With dead ends: 1639 [2023-12-15 20:32:20,252 INFO L226 Difference]: Without dead ends: 1273 [2023-12-15 20:32:20,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=344, Invalid=1062, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 20:32:20,255 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 880 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:32:20,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1160 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:32:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-12-15 20:32:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 735. [2023-12-15 20:32:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 472 states have (on average 1.3516949152542372) internal successors, (638), 478 states have internal predecessors, (638), 244 states have call successors, (244), 18 states have call predecessors, (244), 18 states have return successors, (244), 238 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-15 20:32:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1126 transitions. [2023-12-15 20:32:20,414 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1126 transitions. Word has length 213 [2023-12-15 20:32:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:32:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1126 transitions. [2023-12-15 20:32:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 4 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2023-12-15 20:32:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1126 transitions. [2023-12-15 20:32:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-15 20:32:20,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:32:20,416 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:20,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:32:20,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:20,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:32:20,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:32:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash 200811390, now seen corresponding path program 1 times [2023-12-15 20:32:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:32:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014932415] [2023-12-15 20:32:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:32:20,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:32:20,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860525565] [2023-12-15 20:32:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:32:20,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:32:20,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:32:20,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:32:20,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:32:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:32:21,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-15 20:32:21,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:32:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 429 proven. 405 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2023-12-15 20:32:23,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:32:38,754 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-15 20:32:50,833 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-15 20:33:30,755 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 [2023-12-15 20:33:30,755 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:33:31,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:33:31,956 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 20:33:31,965 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:33:31,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 20:33:31,965 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 214 with TraceHistMax 34,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-15 20:33:31,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-15 20:33:31,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:33:31,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:33:31 BoogieIcfgContainer [2023-12-15 20:33:31,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:33:31,971 INFO L158 Benchmark]: Toolchain (without parser) took 78459.07ms. Allocated memory was 227.5MB in the beginning and 404.8MB in the end (delta: 177.2MB). Free memory was 159.8MB in the beginning and 214.0MB in the end (delta: -54.2MB). Peak memory consumption was 124.3MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,972 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 227.5MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:33:31,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.74ms. Allocated memory was 227.5MB in the beginning and 302.0MB in the end (delta: 74.4MB). Free memory was 159.5MB in the beginning and 266.1MB in the end (delta: -106.5MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.99ms. Allocated memory is still 302.0MB. Free memory was 266.1MB in the beginning and 260.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,980 INFO L158 Benchmark]: Boogie Preprocessor took 62.40ms. Allocated memory is still 302.0MB. Free memory was 260.8MB in the beginning and 253.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,981 INFO L158 Benchmark]: RCFGBuilder took 554.47ms. Allocated memory is still 302.0MB. Free memory was 253.5MB in the beginning and 220.4MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,981 INFO L158 Benchmark]: TraceAbstraction took 77227.92ms. Allocated memory was 302.0MB in the beginning and 404.8MB in the end (delta: 102.8MB). Free memory was 219.9MB in the beginning and 214.0MB in the end (delta: 5.9MB). Peak memory consumption was 109.2MB. Max. memory is 8.0GB. [2023-12-15 20:33:31,987 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 227.5MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 536.74ms. Allocated memory was 227.5MB in the beginning and 302.0MB in the end (delta: 74.4MB). Free memory was 159.5MB in the beginning and 266.1MB in the end (delta: -106.5MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.99ms. Allocated memory is still 302.0MB. Free memory was 266.1MB in the beginning and 260.8MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.40ms. Allocated memory is still 302.0MB. Free memory was 260.8MB in the beginning and 253.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 554.47ms. Allocated memory is still 302.0MB. Free memory was 253.5MB in the beginning and 220.4MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 77227.92ms. Allocated memory was 302.0MB in the beginning and 404.8MB in the end (delta: 102.8MB). Free memory was 219.9MB in the beginning and 214.0MB in the end (delta: 5.9MB). Peak memory consumption was 109.2MB. 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 214 with TraceHistMax 34,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.2s, OverallIterations: 6, TraceHistogramMax: 34, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1221 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1207 mSDsluCounter, 2624 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1790 mSDsCounter, 698 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 832 IncrementalHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 698 mSolverCounterUnsat, 834 mSDtfsCounter, 832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1295 GetRequests, 1250 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=735occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 592 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1269 NumberOfCodeBlocks, 1269 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1265 ConstructedInterpolants, 0 QuantifiedInterpolants, 4605 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2505 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 13338/13464 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 [2023-12-15 20:33:32,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137