/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-pe-co_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:13:27,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:13:27,223 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 20:13:27,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:13:27,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:13:27,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:13:27,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:13:27,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:13:27,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:13:27,255 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:13:27,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:13:27,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:13:27,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:13:27,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:13:27,256 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:13:27,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:13:27,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:13:27,257 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:13:27,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:13:27,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:13:27,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:13:27,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:13:27,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:13:27,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:13:27,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:13:27,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:13:27,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:13:27,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:13:27,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:13:27,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:13:27,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:13:27,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:13:27,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:13:27,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:13:27,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:13:27,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:13:27,467 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:13:27,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2023-12-15 20:13:28,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:13:28,782 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:13:28,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2023-12-15 20:13:28,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6aa4c40/8bab633d4f2f426487f0af68ea55f76c/FLAGcc2e3e480 [2023-12-15 20:13:28,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6aa4c40/8bab633d4f2f426487f0af68ea55f76c [2023-12-15 20:13:28,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:13:28,810 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:13:28,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:13:28,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:13:28,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:13:28,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:13:28" (1/1) ... [2023-12-15 20:13:28,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64737904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:28, skipping insertion in model container [2023-12-15 20:13:28,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:13:28" (1/1) ... [2023-12-15 20:13:28,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:13:28,959 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-pe-co_file-12.i[919,932] [2023-12-15 20:13:29,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:13:29,036 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:13:29,044 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-pe-co_file-12.i[919,932] [2023-12-15 20:13:29,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:13:29,100 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:13:29,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29 WrapperNode [2023-12-15 20:13:29,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:13:29,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:13:29,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:13:29,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:13:29,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,157 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2023-12-15 20:13:29,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:13:29,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:13:29,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:13:29,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:13:29,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,207 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 20:13:29,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:13:29,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:13:29,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:13:29,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:13:29,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (1/1) ... [2023-12-15 20:13:29,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:13:29,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:29,305 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 20:13:29,311 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 20:13:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:13:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:13:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:13:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:13:29,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:13:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:13:29,424 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:13:29,426 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:13:29,697 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:13:29,773 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:13:29,773 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:13:29,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:13:29 BoogieIcfgContainer [2023-12-15 20:13:29,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:13:29,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:13:29,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:13:29,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:13:29,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:13:28" (1/3) ... [2023-12-15 20:13:29,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437ca4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:13:29, skipping insertion in model container [2023-12-15 20:13:29,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:13:29" (2/3) ... [2023-12-15 20:13:29,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437ca4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:13:29, skipping insertion in model container [2023-12-15 20:13:29,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:13:29" (3/3) ... [2023-12-15 20:13:29,781 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2023-12-15 20:13:29,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:13:29,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:13:29,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:13:29,850 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;@1f60ad84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:13:29,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:13:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:13:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 20:13:29,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:29,868 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:29,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:29,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -779469426, now seen corresponding path program 1 times [2023-12-15 20:13:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31042412] [2023-12-15 20:13:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31042412] [2023-12-15 20:13:30,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:13:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330179080] [2023-12-15 20:13:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:30,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:30,097 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 20:13:30,098 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 20:13:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:30,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:13:30,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-12-15 20:13:30,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:13:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330179080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:13:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:13:30,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:13:30,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135939820] [2023-12-15 20:13:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:13:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:13:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:13:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:13:30,355 INFO L87 Difference]: Start difference. First operand has 100 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) 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, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:13:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:30,395 INFO L93 Difference]: Finished difference Result 197 states and 370 transitions. [2023-12-15 20:13:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:13:30,402 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, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 251 [2023-12-15 20:13:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:30,409 INFO L225 Difference]: With dead ends: 197 [2023-12-15 20:13:30,409 INFO L226 Difference]: Without dead ends: 98 [2023-12-15 20:13:30,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 250 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 20:13:30,424 INFO L413 NwaCegarLoop]: 157 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, 157 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 20:13:30,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:13:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-15 20:13:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-15 20:13:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:13:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 160 transitions. [2023-12-15 20:13:30,474 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 160 transitions. Word has length 251 [2023-12-15 20:13:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:30,474 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 160 transitions. [2023-12-15 20:13:30,475 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, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:13:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 160 transitions. [2023-12-15 20:13:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 20:13:30,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:30,479 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:30,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:13:30,692 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 20:13:30,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:30,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 307320850, now seen corresponding path program 1 times [2023-12-15 20:13:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:30,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382093920] [2023-12-15 20:13:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:30,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491472401] [2023-12-15 20:13:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:30,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:30,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:30,790 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 20:13:30,839 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 20:13:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:30,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 20:13:30,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2023-12-15 20:13:31,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 20:13:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382093920] [2023-12-15 20:13:32,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491472401] [2023-12-15 20:13:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491472401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:13:32,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:13:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-15 20:13:32,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853901034] [2023-12-15 20:13:32,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:13:32,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 20:13:32,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 20:13:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:13:32,020 INFO L87 Difference]: Start difference. First operand 98 states and 160 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 20:13:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:34,490 INFO L93 Difference]: Finished difference Result 995 states and 1547 transitions. [2023-12-15 20:13:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-15 20:13:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 251 [2023-12-15 20:13:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:34,509 INFO L225 Difference]: With dead ends: 995 [2023-12-15 20:13:34,509 INFO L226 Difference]: Without dead ends: 898 [2023-12-15 20:13:34,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1190, Invalid=3502, Unknown=0, NotChecked=0, Total=4692 [2023-12-15 20:13:34,512 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 741 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:34,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1231 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 20:13:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-15 20:13:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 529. [2023-12-15 20:13:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 314 states have (on average 1.4171974522292994) internal successors, (445), 320 states have internal predecessors, (445), 200 states have call successors, (200), 14 states have call predecessors, (200), 14 states have return successors, (200), 194 states have call predecessors, (200), 200 states have call successors, (200) [2023-12-15 20:13:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 845 transitions. [2023-12-15 20:13:34,643 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 845 transitions. Word has length 251 [2023-12-15 20:13:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:34,645 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 845 transitions. [2023-12-15 20:13:34,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 20:13:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 845 transitions. [2023-12-15 20:13:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 20:13:34,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:34,653 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:34,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 20:13:34,858 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 20:13:34,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:34,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -703796400, now seen corresponding path program 1 times [2023-12-15 20:13:34,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:34,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108262743] [2023-12-15 20:13:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:34,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:34,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:34,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132392721] [2023-12-15 20:13:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:34,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:34,933 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 20:13:34,960 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 20:13:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:35,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:13:35,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 20:13:35,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:13:35,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:35,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108262743] [2023-12-15 20:13:35,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:35,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132392721] [2023-12-15 20:13:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132392721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:13:35,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:13:35,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:13:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877216015] [2023-12-15 20:13:35,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:13:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:13:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:13:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:13:35,580 INFO L87 Difference]: Start difference. First operand 529 states and 845 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 20:13:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:35,808 INFO L93 Difference]: Finished difference Result 1243 states and 1995 transitions. [2023-12-15 20:13:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:13:35,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 251 [2023-12-15 20:13:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:35,814 INFO L225 Difference]: With dead ends: 1243 [2023-12-15 20:13:35,814 INFO L226 Difference]: Without dead ends: 715 [2023-12-15 20:13:35,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:13:35,816 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 119 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:35,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 509 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:13:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-15 20:13:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 607. [2023-12-15 20:13:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 347 states have (on average 1.377521613832853) internal successors, (478), 353 states have internal predecessors, (478), 242 states have call successors, (242), 17 states have call predecessors, (242), 17 states have return successors, (242), 236 states have call predecessors, (242), 242 states have call successors, (242) [2023-12-15 20:13:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 962 transitions. [2023-12-15 20:13:35,925 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 962 transitions. Word has length 251 [2023-12-15 20:13:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:35,925 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 962 transitions. [2023-12-15 20:13:35,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 20:13:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 962 transitions. [2023-12-15 20:13:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 20:13:35,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:35,927 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:35,952 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 20:13:36,149 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 20:13:36,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:36,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1422061654, now seen corresponding path program 1 times [2023-12-15 20:13:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965620232] [2023-12-15 20:13:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:36,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221042176] [2023-12-15 20:13:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:36,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:36,205 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 20:13:36,254 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 20:13:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:36,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:13:36,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 20:13:37,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:13:37,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:37,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965620232] [2023-12-15 20:13:37,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:37,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221042176] [2023-12-15 20:13:37,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221042176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:13:37,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:13:37,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:13:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122179453] [2023-12-15 20:13:37,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:13:37,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:13:37,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:13:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:13:37,099 INFO L87 Difference]: Start difference. First operand 607 states and 962 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 20:13:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:38,225 INFO L93 Difference]: Finished difference Result 1593 states and 2497 transitions. [2023-12-15 20:13:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 20:13:38,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 252 [2023-12-15 20:13:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:38,231 INFO L225 Difference]: With dead ends: 1593 [2023-12-15 20:13:38,231 INFO L226 Difference]: Without dead ends: 1065 [2023-12-15 20:13:38,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:13:38,234 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 348 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:38,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 677 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 20:13:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-15 20:13:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 761. [2023-12-15 20:13:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 448 states have (on average 1.3995535714285714) internal successors, (627), 455 states have internal predecessors, (627), 290 states have call successors, (290), 22 states have call predecessors, (290), 22 states have return successors, (290), 283 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-15 20:13:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1207 transitions. [2023-12-15 20:13:38,329 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1207 transitions. Word has length 252 [2023-12-15 20:13:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:38,330 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1207 transitions. [2023-12-15 20:13:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 20:13:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1207 transitions. [2023-12-15 20:13:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 20:13:38,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:38,332 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:38,340 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 20:13:38,538 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 20:13:38,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:38,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1851837288, now seen corresponding path program 1 times [2023-12-15 20:13:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104235588] [2023-12-15 20:13:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:38,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519214940] [2023-12-15 20:13:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:38,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:38,563 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 20:13:38,593 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 20:13:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:38,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:13:38,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1163 proven. 24 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2023-12-15 20:13:39,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:44,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:44,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104235588] [2023-12-15 20:13:44,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:44,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519214940] [2023-12-15 20:13:44,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519214940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:13:44,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:13:44,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-15 20:13:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555974932] [2023-12-15 20:13:44,651 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:13:44,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:13:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:13:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=1, NotChecked=0, Total=156 [2023-12-15 20:13:44,652 INFO L87 Difference]: Start difference. First operand 761 states and 1207 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:13:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:48,707 INFO L93 Difference]: Finished difference Result 1721 states and 2670 transitions. [2023-12-15 20:13:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 20:13:48,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 252 [2023-12-15 20:13:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:48,712 INFO L225 Difference]: With dead ends: 1721 [2023-12-15 20:13:48,712 INFO L226 Difference]: Without dead ends: 1039 [2023-12-15 20:13:48,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=311, Invalid=744, Unknown=1, NotChecked=0, Total=1056 [2023-12-15 20:13:48,715 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 224 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:48,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 788 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 20:13:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-15 20:13:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 775. [2023-12-15 20:13:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 458 states have (on average 1.3864628820960698) internal successors, (635), 465 states have internal predecessors, (635), 290 states have call successors, (290), 26 states have call predecessors, (290), 26 states have return successors, (290), 283 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-15 20:13:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1215 transitions. [2023-12-15 20:13:48,783 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1215 transitions. Word has length 252 [2023-12-15 20:13:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:48,783 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 1215 transitions. [2023-12-15 20:13:48,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:13:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1215 transitions. [2023-12-15 20:13:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:13:48,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:48,785 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:48,806 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 20:13:48,991 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 20:13:48,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:48,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1400389615, now seen corresponding path program 1 times [2023-12-15 20:13:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267548414] [2023-12-15 20:13:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:49,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:49,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046512777] [2023-12-15 20:13:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:49,033 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 20:13:49,035 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 20:13:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:49,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:13:49,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1553 proven. 39 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2023-12-15 20:13:49,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 20:13:49,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:49,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267548414] [2023-12-15 20:13:49,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:49,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046512777] [2023-12-15 20:13:49,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046512777] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:13:49,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:13:49,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:13:49,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530152557] [2023-12-15 20:13:49,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:13:49,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:13:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:49,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:13:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:13:49,586 INFO L87 Difference]: Start difference. First operand 775 states and 1215 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-15 20:13:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:49,972 INFO L93 Difference]: Finished difference Result 1533 states and 2370 transitions. [2023-12-15 20:13:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:13:49,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 253 [2023-12-15 20:13:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:49,977 INFO L225 Difference]: With dead ends: 1533 [2023-12-15 20:13:49,977 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 20:13:49,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:13:49,980 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 84 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:49,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 237 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:13:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 20:13:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 799. [2023-12-15 20:13:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 476 states have (on average 1.3361344537815125) internal successors, (636), 483 states have internal predecessors, (636), 290 states have call successors, (290), 32 states have call predecessors, (290), 32 states have return successors, (290), 283 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-15 20:13:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1216 transitions. [2023-12-15 20:13:50,048 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1216 transitions. Word has length 253 [2023-12-15 20:13:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:50,049 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1216 transitions. [2023-12-15 20:13:50,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-15 20:13:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1216 transitions. [2023-12-15 20:13:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:13:50,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:50,051 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:50,059 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 20:13:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:50,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:50,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1119570319, now seen corresponding path program 1 times [2023-12-15 20:13:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:50,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76206562] [2023-12-15 20:13:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:50,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:50,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754123150] [2023-12-15 20:13:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:50,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:50,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:50,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:13:50,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:13:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:50,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:13:50,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1163 proven. 24 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2023-12-15 20:13:51,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:14:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76206562] [2023-12-15 20:14:10,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:14:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754123150] [2023-12-15 20:14:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754123150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:14:10,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:14:10,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-15 20:14:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795615394] [2023-12-15 20:14:10,095 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:14:10,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:14:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:14:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=110, Unknown=4, NotChecked=0, Total=156 [2023-12-15 20:14:10,096 INFO L87 Difference]: Start difference. First operand 799 states and 1216 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:14:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:18,762 INFO L93 Difference]: Finished difference Result 2681 states and 3975 transitions. [2023-12-15 20:14:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-15 20:14:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 253 [2023-12-15 20:14:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:18,770 INFO L225 Difference]: With dead ends: 2681 [2023-12-15 20:14:18,770 INFO L226 Difference]: Without dead ends: 1973 [2023-12-15 20:14:18,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=416, Invalid=1062, Unknown=4, NotChecked=0, Total=1482 [2023-12-15 20:14:18,773 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 398 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:18,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 578 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-15 20:14:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2023-12-15 20:14:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1240. [2023-12-15 20:14:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 753 states have (on average 1.3399734395750331) internal successors, (1009), 762 states have internal predecessors, (1009), 436 states have call successors, (436), 50 states have call predecessors, (436), 50 states have return successors, (436), 427 states have call predecessors, (436), 436 states have call successors, (436) [2023-12-15 20:14:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1881 transitions. [2023-12-15 20:14:18,976 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1881 transitions. Word has length 253 [2023-12-15 20:14:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:18,976 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1881 transitions. [2023-12-15 20:14:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 20:14:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1881 transitions. [2023-12-15 20:14:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:14:18,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:18,978 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:18,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 20:14:19,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:19,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:19,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 887855364, now seen corresponding path program 1 times [2023-12-15 20:14:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025714693] [2023-12-15 20:14:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:19,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:14:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550898293] [2023-12-15 20:14:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:19,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:14:19,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:14:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:19,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:14:19,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 771 proven. 108 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2023-12-15 20:14:21,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:14:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 15 proven. 108 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 20:14:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:14:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025714693] [2023-12-15 20:14:21,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:14:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550898293] [2023-12-15 20:14:21,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550898293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:14:21,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:14:21,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-15 20:14:21,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494639140] [2023-12-15 20:14:21,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:14:21,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:14:21,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:14:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:14:21,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:14:21,733 INFO L87 Difference]: Start difference. First operand 1240 states and 1881 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 20:14:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:14:25,286 INFO L93 Difference]: Finished difference Result 4780 states and 7063 transitions. [2023-12-15 20:14:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 20:14:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 253 [2023-12-15 20:14:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:14:25,299 INFO L225 Difference]: With dead ends: 4780 [2023-12-15 20:14:25,299 INFO L226 Difference]: Without dead ends: 3631 [2023-12-15 20:14:25,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 20:14:25,304 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 713 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:14:25,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 492 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 20:14:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2023-12-15 20:14:25,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 1631. [2023-12-15 20:14:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 988 states have (on average 1.3421052631578947) internal successors, (1326), 1001 states have internal predecessors, (1326), 575 states have call successors, (575), 67 states have call predecessors, (575), 67 states have return successors, (575), 562 states have call predecessors, (575), 575 states have call successors, (575) [2023-12-15 20:14:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2476 transitions. [2023-12-15 20:14:25,557 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2476 transitions. Word has length 253 [2023-12-15 20:14:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:14:25,558 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2476 transitions. [2023-12-15 20:14:25,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 20:14:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2476 transitions. [2023-12-15 20:14:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 20:14:25,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:14:25,561 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:25,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 20:14:25,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:14:25,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:14:25,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:14:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash 468777583, now seen corresponding path program 1 times [2023-12-15 20:14:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:14:25,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728923032] [2023-12-15 20:14:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:14:25,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:14:25,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503874991] [2023-12-15 20:14:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:14:25,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:14:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:14:25,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:14:25,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:14:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:14:25,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 20:14:25,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:14:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1315 proven. 363 refuted. 0 times theorem prover too weak. 1766 trivial. 0 not checked. [2023-12-15 20:14:31,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 20:14:37,103 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 20:14:37,104 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:14:38,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:14:38,304 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 20:14:38,334 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:14:38,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 20:14:38,334 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 254 with TraceHistMax 42,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-15 20:14:38,338 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 [2023-12-15 20:14:38,338 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:14:38,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:14:38,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:14:38 BoogieIcfgContainer [2023-12-15 20:14:38,341 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:14:38,341 INFO L158 Benchmark]: Toolchain (without parser) took 69530.82ms. Allocated memory was 229.6MB in the beginning and 411.0MB in the end (delta: 181.4MB). Free memory was 175.0MB in the beginning and 320.3MB in the end (delta: -145.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,341 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 190.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:14:38,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.61ms. Allocated memory is still 229.6MB. Free memory was 175.0MB in the beginning and 158.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.46ms. Allocated memory is still 229.6MB. Free memory was 158.7MB in the beginning and 154.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,342 INFO L158 Benchmark]: Boogie Preprocessor took 97.83ms. Allocated memory is still 229.6MB. Free memory was 154.1MB in the beginning and 147.2MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,342 INFO L158 Benchmark]: RCFGBuilder took 517.70ms. Allocated memory is still 229.6MB. Free memory was 147.2MB in the beginning and 191.6MB in the end (delta: -44.4MB). Peak memory consumption was 40.0MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,342 INFO L158 Benchmark]: TraceAbstraction took 68565.72ms. Allocated memory was 229.6MB in the beginning and 411.0MB in the end (delta: 181.4MB). Free memory was 191.1MB in the beginning and 320.3MB in the end (delta: -129.3MB). Peak memory consumption was 52.1MB. Max. memory is 8.0GB. [2023-12-15 20:14:38,343 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 190.8MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.61ms. Allocated memory is still 229.6MB. Free memory was 175.0MB in the beginning and 158.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.46ms. Allocated memory is still 229.6MB. Free memory was 158.7MB in the beginning and 154.1MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.83ms. Allocated memory is still 229.6MB. Free memory was 154.1MB in the beginning and 147.2MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 517.70ms. Allocated memory is still 229.6MB. Free memory was 147.2MB in the beginning and 191.6MB in the end (delta: -44.4MB). Peak memory consumption was 40.0MB. Max. memory is 8.0GB. * TraceAbstraction took 68565.72ms. Allocated memory was 229.6MB in the beginning and 411.0MB in the end (delta: 181.4MB). Free memory was 191.1MB in the beginning and 320.3MB in the end (delta: -129.3MB). Peak memory consumption was 52.1MB. 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 254 with TraceHistMax 42,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.5s, OverallIterations: 9, TraceHistogramMax: 42, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2813 SdHoareTripleChecker+Valid, 14.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2627 mSDsluCounter, 4669 SdHoareTripleChecker+Invalid, 13.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3261 mSDsCounter, 1913 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5951 IncrementalHoareTripleChecker+Invalid, 7864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1913 mSolverCounterUnsat, 1408 mSDtfsCounter, 5951 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2953 GetRequests, 2762 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1631occurred in iteration=8, InterpolantAutomatonStates: 185, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 3824 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 30.8s InterpolantComputationTime, 2267 NumberOfCodeBlocks, 2267 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2762 ConstructedInterpolants, 2 QuantifiedInterpolants, 13523 SizeOfPredicates, 41 NumberOfNonLiveVariables, 4521 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 37332/37884 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