/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-cn_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:12:48,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:12:48,099 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 20:12:48,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:12:48,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:12:48,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:12:48,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:12:48,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:12:48,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:12:48,128 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:12:48,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:12:48,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:12:48,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:12:48,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:12:48,129 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:12:48,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:12:48,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:12:48,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:12:48,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:12:48,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:12:48,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:12:48,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:12:48,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:12:48,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:12:48,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:12:48,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:12:48,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:12:48,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:12:48,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:12:48,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:12:48,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:12:48,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:12:48,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:12:48,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:12:48,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:12:48,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:12:48,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:12:48,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:12:48,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:12:48,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:12:48,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:12:48,336 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:12:48,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-81.i [2023-12-15 20:12:49,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:12:49,453 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:12:49,454 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-81.i [2023-12-15 20:12:49,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fedfc550/634f4b2416fe43dab2e43f488afa27e5/FLAGe1625fe22 [2023-12-15 20:12:49,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fedfc550/634f4b2416fe43dab2e43f488afa27e5 [2023-12-15 20:12:49,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:12:49,481 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:12:49,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:12:49,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:12:49,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:12:49,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7f6220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49, skipping insertion in model container [2023-12-15 20:12:49,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:12:49,655 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-cn_file-81.i[919,932] [2023-12-15 20:12:49,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:12:49,714 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:12:49,722 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-cn_file-81.i[919,932] [2023-12-15 20:12:49,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:12:49,801 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:12:49,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49 WrapperNode [2023-12-15 20:12:49,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:12:49,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:12:49,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:12:49,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:12:49,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,866 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 309 [2023-12-15 20:12:49,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:12:49,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:12:49,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:12:49,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:12:49,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,893 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 20:12:49,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:12:49,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:12:49,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:12:49,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:12:49,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (1/1) ... [2023-12-15 20:12:49,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:12:49,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:49,951 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 20:12:49,962 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 20:12:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:12:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:12:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:12:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:12:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:12:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:12:50,073 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:12:50,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:12:50,434 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:12:50,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:12:50,472 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:12:50,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:12:50 BoogieIcfgContainer [2023-12-15 20:12:50,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:12:50,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:12:50,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:12:50,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:12:50,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:12:49" (1/3) ... [2023-12-15 20:12:50,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f5544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:12:50, skipping insertion in model container [2023-12-15 20:12:50,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:12:49" (2/3) ... [2023-12-15 20:12:50,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f5544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:12:50, skipping insertion in model container [2023-12-15 20:12:50,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:12:50" (3/3) ... [2023-12-15 20:12:50,479 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-81.i [2023-12-15 20:12:50,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:12:50,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:12:50,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:12:50,535 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;@627b8444, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:12:50,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:12:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 72 states have internal predecessors, (105), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 20:12:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-15 20:12:50,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:50,567 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:50,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:50,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 880065401, now seen corresponding path program 1 times [2023-12-15 20:12:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422263447] [2023-12-15 20:12:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422263447] [2023-12-15 20:12:50,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:12:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066301132] [2023-12-15 20:12:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:50,797 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 20:12:50,836 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 20:12:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:51,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:12:51,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-12-15 20:12:51,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:12:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066301132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:12:51,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:12:51,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:12:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160071026] [2023-12-15 20:12:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:12:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:12:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:12:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:12:51,108 INFO L87 Difference]: Start difference. First operand has 124 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 72 states have internal predecessors, (105), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-15 20:12:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:51,153 INFO L93 Difference]: Finished difference Result 245 states and 458 transitions. [2023-12-15 20:12:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:12:51,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 302 [2023-12-15 20:12:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:51,162 INFO L225 Difference]: With dead ends: 245 [2023-12-15 20:12:51,162 INFO L226 Difference]: Without dead ends: 122 [2023-12-15 20:12:51,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 301 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 20:12:51,167 INFO L413 NwaCegarLoop]: 197 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, 197 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 20:12:51,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:12:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-15 20:12:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-15 20:12:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 70 states have internal predecessors, (100), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 20:12:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 200 transitions. [2023-12-15 20:12:51,224 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 200 transitions. Word has length 302 [2023-12-15 20:12:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:51,225 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 200 transitions. [2023-12-15 20:12:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-15 20:12:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 200 transitions. [2023-12-15 20:12:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-15 20:12:51,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:51,231 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:51,239 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 20:12:51,438 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 20:12:51,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:51,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1585873727, now seen corresponding path program 1 times [2023-12-15 20:12:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939165584] [2023-12-15 20:12:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:51,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323816054] [2023-12-15 20:12:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:51,499 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 20:12:51,505 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 20:12:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:51,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:12:51,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 20:12:51,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:12:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939165584] [2023-12-15 20:12:51,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323816054] [2023-12-15 20:12:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323816054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:12:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:12:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:12:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413847506] [2023-12-15 20:12:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:12:51,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:12:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:12:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:12:51,739 INFO L87 Difference]: Start difference. First operand 122 states and 200 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:51,835 INFO L93 Difference]: Finished difference Result 291 states and 477 transitions. [2023-12-15 20:12:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:12:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 302 [2023-12-15 20:12:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:51,843 INFO L225 Difference]: With dead ends: 291 [2023-12-15 20:12:51,843 INFO L226 Difference]: Without dead ends: 170 [2023-12-15 20:12:51,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:12:51,848 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 175 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:12:51,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 529 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:12:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-15 20:12:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2023-12-15 20:12:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 110 states have (on average 1.509090909090909) internal successors, (166), 111 states have internal predecessors, (166), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 20:12:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 274 transitions. [2023-12-15 20:12:51,884 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 274 transitions. Word has length 302 [2023-12-15 20:12:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 274 transitions. [2023-12-15 20:12:51,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 274 transitions. [2023-12-15 20:12:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-15 20:12:51,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:51,888 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:51,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:12:52,094 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 20:12:52,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:52,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 408270979, now seen corresponding path program 1 times [2023-12-15 20:12:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804125468] [2023-12-15 20:12:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:52,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:52,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659843007] [2023-12-15 20:12:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:52,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:52,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:52,168 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 20:12:52,192 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 20:12:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:52,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:12:52,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1522 proven. 261 refuted. 0 times theorem prover too weak. 3117 trivial. 0 not checked. [2023-12-15 20:12:53,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:12:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 27 proven. 264 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2023-12-15 20:12:53,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804125468] [2023-12-15 20:12:53,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659843007] [2023-12-15 20:12:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659843007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:12:53,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:12:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 20:12:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509336182] [2023-12-15 20:12:53,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:12:53,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:12:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:12:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:12:53,516 INFO L87 Difference]: Start difference. First operand 167 states and 274 transitions. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-15 20:12:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:54,254 INFO L93 Difference]: Finished difference Result 556 states and 877 transitions. [2023-12-15 20:12:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 20:12:54,254 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) Word has length 302 [2023-12-15 20:12:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:54,258 INFO L225 Difference]: With dead ends: 556 [2023-12-15 20:12:54,258 INFO L226 Difference]: Without dead ends: 390 [2023-12-15 20:12:54,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 20:12:54,261 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 401 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:12:54,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 616 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:12:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-15 20:12:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 277. [2023-12-15 20:12:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 199 states have (on average 1.4773869346733668) internal successors, (294), 202 states have internal predecessors, (294), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 65 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 20:12:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 430 transitions. [2023-12-15 20:12:54,293 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 430 transitions. Word has length 302 [2023-12-15 20:12:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:54,294 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 430 transitions. [2023-12-15 20:12:54,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 5 states have call successors, (99), 3 states have call predecessors, (99), 7 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2023-12-15 20:12:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 430 transitions. [2023-12-15 20:12:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-15 20:12:54,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:54,297 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:54,311 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 20:12:54,506 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 20:12:54,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:54,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1871329617, now seen corresponding path program 1 times [2023-12-15 20:12:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888704542] [2023-12-15 20:12:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:54,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221597328] [2023-12-15 20:12:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:54,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:54,569 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 20:12:54,571 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 20:12:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:54,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 20:12:54,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1377 proven. 123 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2023-12-15 20:12:54,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:12:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 24 proven. 123 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-15 20:12:55,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:55,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888704542] [2023-12-15 20:12:55,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:55,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221597328] [2023-12-15 20:12:55,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221597328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:12:55,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:12:55,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-15 20:12:55,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130481016] [2023-12-15 20:12:55,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:12:55,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:12:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:12:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:12:55,151 INFO L87 Difference]: Start difference. First operand 277 states and 430 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-15 20:12:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:55,718 INFO L93 Difference]: Finished difference Result 694 states and 1056 transitions. [2023-12-15 20:12:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 20:12:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) Word has length 303 [2023-12-15 20:12:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:55,723 INFO L225 Difference]: With dead ends: 694 [2023-12-15 20:12:55,723 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 20:12:55,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:12:55,727 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 299 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:12:55,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 833 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:12:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 20:12:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 318. [2023-12-15 20:12:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 223 states have (on average 1.4080717488789238) internal successors, (314), 227 states have internal predecessors, (314), 79 states have call successors, (79), 15 states have call predecessors, (79), 15 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-15 20:12:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 472 transitions. [2023-12-15 20:12:55,775 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 472 transitions. Word has length 303 [2023-12-15 20:12:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:55,778 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 472 transitions. [2023-12-15 20:12:55,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-15 20:12:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 472 transitions. [2023-12-15 20:12:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-15 20:12:55,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:55,780 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:55,790 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 20:12:55,986 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 20:12:55,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:55,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:55,987 INFO L85 PathProgramCache]: Analyzing trace with hash 963566850, now seen corresponding path program 1 times [2023-12-15 20:12:55,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960631805] [2023-12-15 20:12:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:56,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587077571] [2023-12-15 20:12:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:56,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:56,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:56,010 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 20:12:56,037 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 20:12:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:56,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:12:56,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2479 proven. 66 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2023-12-15 20:12:56,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:12:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 20:12:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960631805] [2023-12-15 20:12:56,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587077571] [2023-12-15 20:12:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587077571] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:12:56,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:12:56,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-15 20:12:56,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065794149] [2023-12-15 20:12:56,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:12:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:12:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:12:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:12:56,576 INFO L87 Difference]: Start difference. First operand 318 states and 472 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:57,089 INFO L93 Difference]: Finished difference Result 912 states and 1316 transitions. [2023-12-15 20:12:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:12:57,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 304 [2023-12-15 20:12:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:57,092 INFO L225 Difference]: With dead ends: 912 [2023-12-15 20:12:57,092 INFO L226 Difference]: Without dead ends: 628 [2023-12-15 20:12:57,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:12:57,093 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 404 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:12:57,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 408 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:12:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-12-15 20:12:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 334. [2023-12-15 20:12:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 238 states have (on average 1.415966386554622) internal successors, (337), 242 states have internal predecessors, (337), 79 states have call successors, (79), 16 states have call predecessors, (79), 16 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-15 20:12:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2023-12-15 20:12:57,130 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 304 [2023-12-15 20:12:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:57,130 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2023-12-15 20:12:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2023-12-15 20:12:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:12:57,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:57,133 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:57,138 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 20:12:57,337 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 20:12:57,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:57,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash -927060846, now seen corresponding path program 1 times [2023-12-15 20:12:57,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:57,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211549801] [2023-12-15 20:12:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:57,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:57,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409794138] [2023-12-15 20:12:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:57,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:57,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:57,361 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 20:12:57,390 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 20:12:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:57,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:12:57,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 20:12:57,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:12:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211549801] [2023-12-15 20:12:57,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:57,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409794138] [2023-12-15 20:12:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409794138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:12:57,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:12:57,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:12:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635721512] [2023-12-15 20:12:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:12:57,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:12:57,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:12:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:12:57,790 INFO L87 Difference]: Start difference. First operand 334 states and 495 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:12:57,993 INFO L93 Difference]: Finished difference Result 938 states and 1411 transitions. [2023-12-15 20:12:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:12:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-15 20:12:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:12:57,997 INFO L225 Difference]: With dead ends: 938 [2023-12-15 20:12:57,997 INFO L226 Difference]: Without dead ends: 638 [2023-12-15 20:12:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:12:57,999 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 49 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:12:57,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 463 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:12:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-15 20:12:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2023-12-15 20:12:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 460 states have (on average 1.4304347826086956) internal successors, (658), 467 states have internal predecessors, (658), 147 states have call successors, (147), 28 states have call predecessors, (147), 28 states have return successors, (147), 140 states have call predecessors, (147), 147 states have call successors, (147) [2023-12-15 20:12:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 952 transitions. [2023-12-15 20:12:58,068 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 952 transitions. Word has length 305 [2023-12-15 20:12:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:12:58,068 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 952 transitions. [2023-12-15 20:12:58,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:12:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 952 transitions. [2023-12-15 20:12:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:12:58,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:12:58,072 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:58,084 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 20:12:58,277 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 20:12:58,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:12:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:12:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1647964922, now seen corresponding path program 1 times [2023-12-15 20:12:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:12:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265813331] [2023-12-15 20:12:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:58,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:12:58,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:12:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108288999] [2023-12-15 20:12:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:12:58,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:12:58,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:12:58,304 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 20:12:58,318 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 20:12:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:12:58,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:12:58,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:12:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 49 proven. 147 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-15 20:12:59,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:12:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-15 20:12:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:12:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265813331] [2023-12-15 20:12:59,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:12:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108288999] [2023-12-15 20:12:59,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108288999] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:12:59,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:12:59,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 20:12:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296462106] [2023-12-15 20:12:59,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:12:59,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:12:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:12:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:12:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:12:59,549 INFO L87 Difference]: Start difference. First operand 636 states and 952 transitions. Second operand has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-15 20:13:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:01,004 INFO L93 Difference]: Finished difference Result 1916 states and 2918 transitions. [2023-12-15 20:13:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 20:13:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) Word has length 305 [2023-12-15 20:13:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:01,010 INFO L225 Difference]: With dead ends: 1916 [2023-12-15 20:13:01,010 INFO L226 Difference]: Without dead ends: 1314 [2023-12-15 20:13:01,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 20:13:01,012 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1105 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:01,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 920 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 20:13:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-12-15 20:13:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 929. [2023-12-15 20:13:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 670 states have (on average 1.4119402985074627) internal successors, (946), 680 states have internal predecessors, (946), 216 states have call successors, (216), 42 states have call predecessors, (216), 42 states have return successors, (216), 206 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-15 20:13:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1378 transitions. [2023-12-15 20:13:01,126 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1378 transitions. Word has length 305 [2023-12-15 20:13:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:01,127 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1378 transitions. [2023-12-15 20:13:01,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-15 20:13:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1378 transitions. [2023-12-15 20:13:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:13:01,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:01,129 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:01,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:13:01,334 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 20:13:01,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:01,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1788513532, now seen corresponding path program 1 times [2023-12-15 20:13:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:01,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461774604] [2023-12-15 20:13:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:01,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:01,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:01,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868909980] [2023-12-15 20:13:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:01,364 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 20:13:01,368 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 20:13:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:01,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 20:13:01,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 20:13:15,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 20:13:21,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:21,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461774604] [2023-12-15 20:13:21,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:21,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868909980] [2023-12-15 20:13:21,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868909980] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:13:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:13:21,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-12-15 20:13:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703995543] [2023-12-15 20:13:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:13:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:13:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:13:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:13:21,524 INFO L87 Difference]: Start difference. First operand 929 states and 1378 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:13:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:22,594 INFO L93 Difference]: Finished difference Result 2016 states and 3016 transitions. [2023-12-15 20:13:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:13:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-15 20:13:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:22,600 INFO L225 Difference]: With dead ends: 2016 [2023-12-15 20:13:22,600 INFO L226 Difference]: Without dead ends: 1334 [2023-12-15 20:13:22,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2023-12-15 20:13:22,603 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 451 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:22,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 792 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:13:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-15 20:13:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1037. [2023-12-15 20:13:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 778 states have (on average 1.448586118251928) internal successors, (1127), 788 states have internal predecessors, (1127), 216 states have call successors, (216), 42 states have call predecessors, (216), 42 states have return successors, (216), 206 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-15 20:13:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1559 transitions. [2023-12-15 20:13:22,701 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1559 transitions. Word has length 305 [2023-12-15 20:13:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:22,701 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1559 transitions. [2023-12-15 20:13:22,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:13:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1559 transitions. [2023-12-15 20:13:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:13:22,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:22,714 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:22,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:13:22,918 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 20:13:22,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:22,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:22,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2007368250, now seen corresponding path program 1 times [2023-12-15 20:13:22,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:22,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897820900] [2023-12-15 20:13:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:22,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:22,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:22,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752435786] [2023-12-15 20:13:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:22,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:22,969 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 20:13:22,971 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 20:13:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:23,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 20:13:23,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 100 proven. 288 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 20:13:44,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 20:13:49,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897820900] [2023-12-15 20:13:49,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752435786] [2023-12-15 20:13:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752435786] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:13:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:13:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-12-15 20:13:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035331212] [2023-12-15 20:13:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:13:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:13:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:13:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:13:49,723 INFO L87 Difference]: Start difference. First operand 1037 states and 1559 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:13:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:50,756 INFO L93 Difference]: Finished difference Result 2075 states and 3109 transitions. [2023-12-15 20:13:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:13:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-15 20:13:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:50,761 INFO L225 Difference]: With dead ends: 2075 [2023-12-15 20:13:50,761 INFO L226 Difference]: Without dead ends: 1334 [2023-12-15 20:13:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2023-12-15 20:13:50,764 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 404 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:50,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 750 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:13:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-15 20:13:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1037. [2023-12-15 20:13:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 778 states have (on average 1.448586118251928) internal successors, (1127), 788 states have internal predecessors, (1127), 216 states have call successors, (216), 42 states have call predecessors, (216), 42 states have return successors, (216), 206 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-15 20:13:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1559 transitions. [2023-12-15 20:13:50,861 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1559 transitions. Word has length 305 [2023-12-15 20:13:50,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:50,863 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1559 transitions. [2023-12-15 20:13:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 20:13:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1559 transitions. [2023-12-15 20:13:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:13:50,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:50,865 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:50,874 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 20:13:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:51,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:51,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -16924802, now seen corresponding path program 1 times [2023-12-15 20:13:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188705969] [2023-12-15 20:13:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:51,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:51,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422918914] [2023-12-15 20:13:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:51,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:51,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:13:51,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:13:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:51,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:13:51,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:13:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 49 proven. 147 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-15 20:13:52,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:13:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-15 20:13:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:13:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188705969] [2023-12-15 20:13:52,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:13:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422918914] [2023-12-15 20:13:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422918914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:13:52,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:13:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-15 20:13:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492160498] [2023-12-15 20:13:52,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:13:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:13:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:13:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:13:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:13:52,999 INFO L87 Difference]: Start difference. First operand 1037 states and 1559 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-15 20:13:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:13:54,423 INFO L93 Difference]: Finished difference Result 2187 states and 3308 transitions. [2023-12-15 20:13:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 20:13:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) Word has length 305 [2023-12-15 20:13:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:13:54,428 INFO L225 Difference]: With dead ends: 2187 [2023-12-15 20:13:54,428 INFO L226 Difference]: Without dead ends: 1310 [2023-12-15 20:13:54,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-15 20:13:54,431 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 825 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:13:54,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1016 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 20:13:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2023-12-15 20:13:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1038. [2023-12-15 20:13:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 779 states have (on average 1.4441591784338896) internal successors, (1125), 789 states have internal predecessors, (1125), 216 states have call successors, (216), 42 states have call predecessors, (216), 42 states have return successors, (216), 206 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-15 20:13:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1557 transitions. [2023-12-15 20:13:54,558 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1557 transitions. Word has length 305 [2023-12-15 20:13:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:13:54,558 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1557 transitions. [2023-12-15 20:13:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (100), 3 states have call predecessors, (100), 4 states have return successors, (100), 2 states have call predecessors, (100), 4 states have call successors, (100) [2023-12-15 20:13:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1557 transitions. [2023-12-15 20:13:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 20:13:54,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:13:54,560 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:54,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:13:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:13:54,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:13:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:13:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash 354605785, now seen corresponding path program 1 times [2023-12-15 20:13:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:13:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042381197] [2023-12-15 20:13:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:13:54,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:13:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920583549] [2023-12-15 20:13:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:13:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:13:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:13:54,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:13:54,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:13:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:13:54,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 20:13:54,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:13:55,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:13:55,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:13:55,617 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 20:13:55,624 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:13:55,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:13:55,786 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 306 with TraceHistMax 50,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. [2023-12-15 20:13:55,789 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:13:55,791 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:13:55,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:13:55 BoogieIcfgContainer [2023-12-15 20:13:55,792 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:13:55,793 INFO L158 Benchmark]: Toolchain (without parser) took 66311.49ms. Allocated memory was 259.0MB in the beginning and 675.3MB in the end (delta: 416.3MB). Free memory was 205.3MB in the beginning and 560.7MB in the end (delta: -355.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-15 20:13:55,793 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 180.4MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:13:55,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.67ms. Allocated memory is still 259.0MB. Free memory was 205.3MB in the beginning and 188.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:13:55,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.09ms. Allocated memory is still 259.0MB. Free memory was 188.0MB in the beginning and 182.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 20:13:55,793 INFO L158 Benchmark]: Boogie Preprocessor took 61.27ms. Allocated memory is still 259.0MB. Free memory was 182.2MB in the beginning and 174.9MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 20:13:55,794 INFO L158 Benchmark]: RCFGBuilder took 543.60ms. Allocated memory is still 259.0MB. Free memory was 174.9MB in the beginning and 136.6MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-15 20:13:55,794 INFO L158 Benchmark]: TraceAbstraction took 65318.49ms. Allocated memory was 259.0MB in the beginning and 675.3MB in the end (delta: 416.3MB). Free memory was 135.6MB in the beginning and 560.7MB in the end (delta: -425.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:13:55,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 180.4MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.67ms. Allocated memory is still 259.0MB. Free memory was 205.3MB in the beginning and 188.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.09ms. Allocated memory is still 259.0MB. Free memory was 188.0MB in the beginning and 182.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.27ms. Allocated memory is still 259.0MB. Free memory was 182.2MB in the beginning and 174.9MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 543.60ms. Allocated memory is still 259.0MB. Free memory was 174.9MB in the beginning and 136.6MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 65318.49ms. Allocated memory was 259.0MB in the beginning and 675.3MB in the end (delta: 416.3MB). Free memory was 135.6MB in the beginning and 560.7MB in the end (delta: -425.1MB). There was no memory consumed. 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 306 with TraceHistMax 50,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.3s, OverallIterations: 11, TraceHistogramMax: 50, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4174 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4113 mSDsluCounter, 6524 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4572 mSDsCounter, 1819 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4684 IncrementalHoareTripleChecker+Invalid, 6503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1819 mSolverCounterUnsat, 1952 mSDtfsCounter, 4684 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5240 GetRequests, 5052 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1038occurred in iteration=10, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1763 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 51.9s InterpolantComputationTime, 3340 NumberOfCodeBlocks, 3340 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5150 ConstructedInterpolants, 2 QuantifiedInterpolants, 45484 SizeOfPredicates, 116 NumberOfNonLiveVariables, 6777 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 81299/83300 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