/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_fillercodesize_ps-cn-250_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:48:28,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:48:28,395 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 19:48:28,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:48:28,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:48:28,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:48:28,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:48:28,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:48:28,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:48:28,420 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:48:28,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:48:28,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:48:28,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:48:28,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:48:28,422 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:48:28,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:48:28,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:48:28,423 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:48:28,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:48:28,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:48:28,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:48:28,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:48:28,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:48:28,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:48:28,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:48:28,425 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:48:28,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:48:28,425 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:48:28,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:48:28,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:48:28,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:48:28,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:48:28,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:48:28,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:48:28,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:48:28,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:48:28,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:48:28,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:48:28,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:48:28,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:48:28,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:48:28,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:48:28,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:48:28,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:48:28,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:48:28,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:48:28,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:48:28,638 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:48:28,638 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:48:28,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2023-12-15 19:48:29,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:48:30,052 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:48:30,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2023-12-15 19:48:30,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949bc033f/138dd4c1fa434955a982921d4b2287fa/FLAG2d6748da0 [2023-12-15 19:48:30,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949bc033f/138dd4c1fa434955a982921d4b2287fa [2023-12-15 19:48:30,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:48:30,079 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:48:30,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:48:30,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:48:30,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:48:30,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd09138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30, skipping insertion in model container [2023-12-15 19:48:30,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:48:30,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i[915,928] [2023-12-15 19:48:30,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:48:30,404 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:48:30,415 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i[915,928] [2023-12-15 19:48:30,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:48:30,519 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:48:30,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30 WrapperNode [2023-12-15 19:48:30,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:48:30,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:48:30,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:48:30,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:48:30,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,623 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 590 [2023-12-15 19:48:30,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:48:30,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:48:30,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:48:30,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:48:30,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,691 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 19:48:30,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:48:30,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:48:30,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:48:30,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:48:30,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (1/1) ... [2023-12-15 19:48:30,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:48:30,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:30,813 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 19:48:30,838 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 19:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:48:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:48:30,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:48:30,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:48:30,989 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:48:30,993 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:48:31,746 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:48:31,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:48:31,793 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:48:31,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:48:31 BoogieIcfgContainer [2023-12-15 19:48:31,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:48:31,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:48:31,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:48:31,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:48:31,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:48:30" (1/3) ... [2023-12-15 19:48:31,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406961fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:48:31, skipping insertion in model container [2023-12-15 19:48:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:30" (2/3) ... [2023-12-15 19:48:31,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406961fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:48:31, skipping insertion in model container [2023-12-15 19:48:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:48:31" (3/3) ... [2023-12-15 19:48:31,801 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2023-12-15 19:48:31,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:48:31,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:48:31,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:48:31,884 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;@62ab5ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:48:31,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:48:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 148 states have (on average 1.5743243243243243) internal successors, (233), 149 states have internal predecessors, (233), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:48:31,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:31,938 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:31,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:31,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash 136519565, now seen corresponding path program 1 times [2023-12-15 19:48:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639329596] [2023-12-15 19:48:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639329596] [2023-12-15 19:48:32,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:48:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830455064] [2023-12-15 19:48:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:32,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:32,364 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 19:48:32,371 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 19:48:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:32,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:48:32,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2023-12-15 19:48:32,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830455064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:32,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:32,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:48:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644481555] [2023-12-15 19:48:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:32,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:48:32,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:48:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:48:32,880 INFO L87 Difference]: Start difference. First operand has 237 states, 148 states have (on average 1.5743243243243243) internal successors, (233), 149 states have internal predecessors, (233), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:48:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:32,939 INFO L93 Difference]: Finished difference Result 471 states and 894 transitions. [2023-12-15 19:48:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:48:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 531 [2023-12-15 19:48:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:32,955 INFO L225 Difference]: With dead ends: 471 [2023-12-15 19:48:32,955 INFO L226 Difference]: Without dead ends: 235 [2023-12-15 19:48:32,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 530 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 19:48:32,969 INFO L413 NwaCegarLoop]: 395 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, 395 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 19:48:32,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 395 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-15 19:48:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-12-15 19:48:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 147 states have (on average 1.5374149659863945) internal successors, (226), 147 states have internal predecessors, (226), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 398 transitions. [2023-12-15 19:48:33,057 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 398 transitions. Word has length 531 [2023-12-15 19:48:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 398 transitions. [2023-12-15 19:48:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:48:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 398 transitions. [2023-12-15 19:48:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:48:33,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:33,071 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:33,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:33,278 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 19:48:33,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:33,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1987618031, now seen corresponding path program 1 times [2023-12-15 19:48:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295338120] [2023-12-15 19:48:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:33,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185555228] [2023-12-15 19:48:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:33,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:33,417 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 19:48:33,443 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 19:48:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:33,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:33,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:33,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:33,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:33,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295338120] [2023-12-15 19:48:33,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:33,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185555228] [2023-12-15 19:48:33,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185555228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113352746] [2023-12-15 19:48:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:33,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:33,821 INFO L87 Difference]: Start difference. First operand 235 states and 398 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:33,886 INFO L93 Difference]: Finished difference Result 470 states and 797 transitions. [2023-12-15 19:48:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 531 [2023-12-15 19:48:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:33,891 INFO L225 Difference]: With dead ends: 470 [2023-12-15 19:48:33,891 INFO L226 Difference]: Without dead ends: 236 [2023-12-15 19:48:33,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:33,894 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 0 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:33,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 783 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-15 19:48:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-12-15 19:48:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 148 states have internal predecessors, (227), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 399 transitions. [2023-12-15 19:48:33,926 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 399 transitions. Word has length 531 [2023-12-15 19:48:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:33,932 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 399 transitions. [2023-12-15 19:48:33,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 399 transitions. [2023-12-15 19:48:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:33,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:33,969 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:33,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:48:34,178 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 19:48:34,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:34,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 419158308, now seen corresponding path program 1 times [2023-12-15 19:48:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375628851] [2023-12-15 19:48:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:34,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514365709] [2023-12-15 19:48:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:34,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:34,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:34,270 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 19:48:34,275 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 19:48:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:34,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:34,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:34,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375628851] [2023-12-15 19:48:34,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514365709] [2023-12-15 19:48:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514365709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456116999] [2023-12-15 19:48:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:34,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:34,641 INFO L87 Difference]: Start difference. First operand 236 states and 399 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:34,696 INFO L93 Difference]: Finished difference Result 472 states and 799 transitions. [2023-12-15 19:48:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:34,704 INFO L225 Difference]: With dead ends: 472 [2023-12-15 19:48:34,704 INFO L226 Difference]: Without dead ends: 237 [2023-12-15 19:48:34,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:34,707 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 0 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:34,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 783 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-15 19:48:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-15 19:48:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 149 states have internal predecessors, (228), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 400 transitions. [2023-12-15 19:48:34,742 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 400 transitions. Word has length 532 [2023-12-15 19:48:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:34,742 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 400 transitions. [2023-12-15 19:48:34,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 400 transitions. [2023-12-15 19:48:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-15 19:48:34,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:34,746 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:34,755 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 19:48:34,953 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 19:48:34,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 215788339, now seen corresponding path program 1 times [2023-12-15 19:48:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649754104] [2023-12-15 19:48:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:35,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929971724] [2023-12-15 19:48:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:35,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:35,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:35,019 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 19:48:35,039 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 19:48:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:35,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:48:35,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6749 proven. 75 refuted. 0 times theorem prover too weak. 7796 trivial. 0 not checked. [2023-12-15 19:48:35,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 180 proven. 75 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-15 19:48:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649754104] [2023-12-15 19:48:36,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:36,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929971724] [2023-12-15 19:48:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929971724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:36,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:48:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360657164] [2023-12-15 19:48:36,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:48:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:48:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:48:36,114 INFO L87 Difference]: Start difference. First operand 237 states and 400 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 5 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2023-12-15 19:48:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:36,743 INFO L93 Difference]: Finished difference Result 483 states and 807 transitions. [2023-12-15 19:48:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 19:48:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 5 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) Word has length 533 [2023-12-15 19:48:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:36,747 INFO L225 Difference]: With dead ends: 483 [2023-12-15 19:48:36,747 INFO L226 Difference]: Without dead ends: 247 [2023-12-15 19:48:36,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:48:36,750 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 786 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:36,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 725 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:48:36,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-15 19:48:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2023-12-15 19:48:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.4967741935483871) internal successors, (232), 155 states have internal predecessors, (232), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 404 transitions. [2023-12-15 19:48:36,780 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 404 transitions. Word has length 533 [2023-12-15 19:48:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:36,784 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 404 transitions. [2023-12-15 19:48:36,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 5 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (112), 5 states have call predecessors, (112), 5 states have call successors, (112) [2023-12-15 19:48:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 404 transitions. [2023-12-15 19:48:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-15 19:48:36,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:36,790 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:36,800 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 19:48:36,997 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 19:48:36,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1057936823, now seen corresponding path program 1 times [2023-12-15 19:48:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49467837] [2023-12-15 19:48:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:37,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:37,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646703235] [2023-12-15 19:48:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:37,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:37,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:37,058 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 19:48:37,075 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 19:48:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:37,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:37,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3489 proven. 33 refuted. 0 times theorem prover too weak. 11098 trivial. 0 not checked. [2023-12-15 19:48:37,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 222 proven. 33 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-15 19:48:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49467837] [2023-12-15 19:48:37,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646703235] [2023-12-15 19:48:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646703235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:37,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055503978] [2023-12-15 19:48:37,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:37,845 INFO L87 Difference]: Start difference. First operand 245 states and 404 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-15 19:48:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:38,294 INFO L93 Difference]: Finished difference Result 497 states and 814 transitions. [2023-12-15 19:48:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 533 [2023-12-15 19:48:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:38,297 INFO L225 Difference]: With dead ends: 497 [2023-12-15 19:48:38,297 INFO L226 Difference]: Without dead ends: 253 [2023-12-15 19:48:38,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1058 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:48:38,298 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 266 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:38,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 731 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:48:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-15 19:48:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2023-12-15 19:48:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 158 states have (on average 1.481012658227848) internal successors, (234), 158 states have internal predecessors, (234), 86 states have call successors, (86), 4 states have call predecessors, (86), 4 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:48:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 406 transitions. [2023-12-15 19:48:38,330 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 406 transitions. Word has length 533 [2023-12-15 19:48:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:38,331 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 406 transitions. [2023-12-15 19:48:38,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-15 19:48:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 406 transitions. [2023-12-15 19:48:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 19:48:38,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:38,335 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:38,346 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 19:48:38,543 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 19:48:38,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:38,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash 497456767, now seen corresponding path program 1 times [2023-12-15 19:48:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:38,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545406009] [2023-12-15 19:48:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:38,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699720793] [2023-12-15 19:48:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:38,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:38,590 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 19:48:38,593 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 19:48:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:38,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:48:38,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:38,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545406009] [2023-12-15 19:48:38,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699720793] [2023-12-15 19:48:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699720793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:38,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:48:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107658907] [2023-12-15 19:48:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:48:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:48:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:48:38,960 INFO L87 Difference]: Start difference. First operand 249 states and 406 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:39,118 INFO L93 Difference]: Finished difference Result 621 states and 1023 transitions. [2023-12-15 19:48:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:48:39,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 534 [2023-12-15 19:48:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:39,121 INFO L225 Difference]: With dead ends: 621 [2023-12-15 19:48:39,121 INFO L226 Difference]: Without dead ends: 373 [2023-12-15 19:48:39,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 531 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 19:48:39,123 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 206 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:39,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1481 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:48:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-15 19:48:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2023-12-15 19:48:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 262 states have (on average 1.5725190839694656) internal successors, (412), 263 states have internal predecessors, (412), 101 states have call successors, (101), 5 states have call predecessors, (101), 5 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-15 19:48:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 614 transitions. [2023-12-15 19:48:39,152 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 614 transitions. Word has length 534 [2023-12-15 19:48:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:39,152 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 614 transitions. [2023-12-15 19:48:39,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 614 transitions. [2023-12-15 19:48:39,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 19:48:39,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:39,156 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:39,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 19:48:39,365 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 19:48:39,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:39,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1884242177, now seen corresponding path program 1 times [2023-12-15 19:48:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:39,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657024741] [2023-12-15 19:48:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:39,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:39,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922412592] [2023-12-15 19:48:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:39,419 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 19:48:39,441 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 19:48:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:39,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:48:39,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7157 proven. 75 refuted. 0 times theorem prover too weak. 7388 trivial. 0 not checked. [2023-12-15 19:48:40,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 180 proven. 75 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-15 19:48:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657024741] [2023-12-15 19:48:40,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922412592] [2023-12-15 19:48:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922412592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:40,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:48:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491722232] [2023-12-15 19:48:40,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:40,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:48:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:48:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:48:40,854 INFO L87 Difference]: Start difference. First operand 369 states and 614 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 5 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) [2023-12-15 19:48:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:41,436 INFO L93 Difference]: Finished difference Result 743 states and 1233 transitions. [2023-12-15 19:48:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 5 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) Word has length 534 [2023-12-15 19:48:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:41,442 INFO L225 Difference]: With dead ends: 743 [2023-12-15 19:48:41,442 INFO L226 Difference]: Without dead ends: 375 [2023-12-15 19:48:41,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:48:41,444 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 620 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:41,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 716 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:48:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-15 19:48:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 369. [2023-12-15 19:48:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 262 states have (on average 1.5648854961832062) internal successors, (410), 263 states have internal predecessors, (410), 101 states have call successors, (101), 5 states have call predecessors, (101), 5 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-15 19:48:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 612 transitions. [2023-12-15 19:48:41,478 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 612 transitions. Word has length 534 [2023-12-15 19:48:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:41,478 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 612 transitions. [2023-12-15 19:48:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 5 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) [2023-12-15 19:48:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 612 transitions. [2023-12-15 19:48:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 19:48:41,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:41,482 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:41,493 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 19:48:41,690 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 19:48:41,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:41,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1038917821, now seen corresponding path program 1 times [2023-12-15 19:48:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104216850] [2023-12-15 19:48:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:41,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796920792] [2023-12-15 19:48:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:41,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:41,739 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 19:48:41,758 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 19:48:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:42,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:48:42,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:42,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:42,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104216850] [2023-12-15 19:48:42,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796920792] [2023-12-15 19:48:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796920792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:42,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:48:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567065855] [2023-12-15 19:48:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:42,696 INFO L87 Difference]: Start difference. First operand 369 states and 612 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:42,768 INFO L93 Difference]: Finished difference Result 1105 states and 1834 transitions. [2023-12-15 19:48:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:42,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 534 [2023-12-15 19:48:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:42,776 INFO L225 Difference]: With dead ends: 1105 [2023-12-15 19:48:42,777 INFO L226 Difference]: Without dead ends: 737 [2023-12-15 19:48:42,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:42,779 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 118 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:42,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 780 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-15 19:48:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 735. [2023-12-15 19:48:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 522 states have (on average 1.5517241379310345) internal successors, (810), 524 states have internal predecessors, (810), 202 states have call successors, (202), 10 states have call predecessors, (202), 10 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-15 19:48:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1214 transitions. [2023-12-15 19:48:42,853 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1214 transitions. Word has length 534 [2023-12-15 19:48:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1214 transitions. [2023-12-15 19:48:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1214 transitions. [2023-12-15 19:48:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-15 19:48:42,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:42,858 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:42,870 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 19:48:43,070 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 19:48:43,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:43,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2087767238, now seen corresponding path program 1 times [2023-12-15 19:48:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53719034] [2023-12-15 19:48:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:43,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:43,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244720282] [2023-12-15 19:48:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:43,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:43,122 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 19:48:43,144 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 19:48:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:43,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:43,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:43,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53719034] [2023-12-15 19:48:43,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244720282] [2023-12-15 19:48:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244720282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125524257] [2023-12-15 19:48:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:43,490 INFO L87 Difference]: Start difference. First operand 735 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:43,559 INFO L93 Difference]: Finished difference Result 1579 states and 2600 transitions. [2023-12-15 19:48:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 535 [2023-12-15 19:48:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:43,565 INFO L225 Difference]: With dead ends: 1579 [2023-12-15 19:48:43,565 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 19:48:43,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:43,570 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 37 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:43,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 800 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 19:48:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 771. [2023-12-15 19:48:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 558 states have (on average 1.5448028673835126) internal successors, (862), 560 states have internal predecessors, (862), 202 states have call successors, (202), 10 states have call predecessors, (202), 10 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2023-12-15 19:48:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1266 transitions. [2023-12-15 19:48:43,683 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1266 transitions. Word has length 535 [2023-12-15 19:48:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:43,684 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1266 transitions. [2023-12-15 19:48:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1266 transitions. [2023-12-15 19:48:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-15 19:48:43,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:43,689 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:43,703 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 19:48:43,897 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 19:48:43,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:43,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1223087148, now seen corresponding path program 1 times [2023-12-15 19:48:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247387257] [2023-12-15 19:48:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:43,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:43,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550439434] [2023-12-15 19:48:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:43,958 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 19:48:43,964 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 19:48:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:44,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:44,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:44,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247387257] [2023-12-15 19:48:44,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550439434] [2023-12-15 19:48:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550439434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:44,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755600756] [2023-12-15 19:48:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:44,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:44,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:44,335 INFO L87 Difference]: Start difference. First operand 771 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:44,449 INFO L93 Difference]: Finished difference Result 2303 states and 3784 transitions. [2023-12-15 19:48:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:44,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 535 [2023-12-15 19:48:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:44,458 INFO L225 Difference]: With dead ends: 2303 [2023-12-15 19:48:44,458 INFO L226 Difference]: Without dead ends: 1533 [2023-12-15 19:48:44,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:44,462 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 382 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1136 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2023-12-15 19:48:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1531. [2023-12-15 19:48:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1106 states have (on average 1.5352622061482821) internal successors, (1698), 1110 states have internal predecessors, (1698), 404 states have call successors, (404), 20 states have call predecessors, (404), 20 states have return successors, (404), 400 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-15 19:48:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2506 transitions. [2023-12-15 19:48:44,592 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2506 transitions. Word has length 535 [2023-12-15 19:48:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:44,593 INFO L495 AbstractCegarLoop]: Abstraction has 1531 states and 2506 transitions. [2023-12-15 19:48:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2506 transitions. [2023-12-15 19:48:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-12-15 19:48:44,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:44,597 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:44,608 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 19:48:44,804 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 19:48:44,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:44,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash 355509267, now seen corresponding path program 1 times [2023-12-15 19:48:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:44,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946133287] [2023-12-15 19:48:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:44,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:44,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:44,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125753665] [2023-12-15 19:48:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:44,855 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 19:48:44,879 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 19:48:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:45,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:45,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:45,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:45,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:45,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946133287] [2023-12-15 19:48:45,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125753665] [2023-12-15 19:48:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125753665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:45,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:48:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610609915] [2023-12-15 19:48:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:48:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:48:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:48:45,329 INFO L87 Difference]: Start difference. First operand 1531 states and 2506 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:45,528 INFO L93 Difference]: Finished difference Result 2587 states and 4176 transitions. [2023-12-15 19:48:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2023-12-15 19:48:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:45,539 INFO L225 Difference]: With dead ends: 2587 [2023-12-15 19:48:45,539 INFO L226 Difference]: Without dead ends: 1821 [2023-12-15 19:48:45,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:48:45,543 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 100 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:45,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1649 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:48:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-15 19:48:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1629. [2023-12-15 19:48:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1204 states have (on average 1.5249169435215948) internal successors, (1836), 1208 states have internal predecessors, (1836), 404 states have call successors, (404), 20 states have call predecessors, (404), 20 states have return successors, (404), 400 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-15 19:48:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2644 transitions. [2023-12-15 19:48:45,738 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2644 transitions. Word has length 536 [2023-12-15 19:48:45,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:45,739 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2644 transitions. [2023-12-15 19:48:45,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2644 transitions. [2023-12-15 19:48:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-12-15 19:48:45,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:45,743 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:45,756 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 19:48:45,952 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 19:48:45,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:45,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2002329056, now seen corresponding path program 1 times [2023-12-15 19:48:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882713655] [2023-12-15 19:48:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:45,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99551208] [2023-12-15 19:48:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:45,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:46,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:48:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:46,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:48:46,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5569 proven. 378 refuted. 0 times theorem prover too weak. 8673 trivial. 0 not checked. [2023-12-15 19:48:48,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 66 proven. 189 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-15 19:48:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882713655] [2023-12-15 19:48:49,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99551208] [2023-12-15 19:48:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99551208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:49,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-15 19:48:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358876958] [2023-12-15 19:48:49,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 19:48:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 19:48:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:48:49,058 INFO L87 Difference]: Start difference. First operand 1629 states and 2644 transitions. Second operand has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 12 states have internal predecessors, (192), 6 states have call successors, (172), 4 states have call predecessors, (172), 6 states have return successors, (172), 6 states have call predecessors, (172), 6 states have call successors, (172) [2023-12-15 19:48:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:51,358 INFO L93 Difference]: Finished difference Result 9189 states and 14806 transitions. [2023-12-15 19:48:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 19:48:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 12 states have internal predecessors, (192), 6 states have call successors, (172), 4 states have call predecessors, (172), 6 states have return successors, (172), 6 states have call predecessors, (172), 6 states have call successors, (172) Word has length 536 [2023-12-15 19:48:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:51,394 INFO L225 Difference]: With dead ends: 9189 [2023-12-15 19:48:51,394 INFO L226 Difference]: Without dead ends: 7561 [2023-12-15 19:48:51,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=313, Unknown=0, NotChecked=0, Total=506 [2023-12-15 19:48:51,401 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1543 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:51,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 1881 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:48:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2023-12-15 19:48:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 5711. [2023-12-15 19:48:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 4278 states have (on average 1.512388966806919) internal successors, (6470), 4298 states have internal predecessors, (6470), 1356 states have call successors, (1356), 76 states have call predecessors, (1356), 76 states have return successors, (1356), 1336 states have call predecessors, (1356), 1356 states have call successors, (1356) [2023-12-15 19:48:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 9182 transitions. [2023-12-15 19:48:52,082 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 9182 transitions. Word has length 536 [2023-12-15 19:48:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:52,083 INFO L495 AbstractCegarLoop]: Abstraction has 5711 states and 9182 transitions. [2023-12-15 19:48:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 12 states have internal predecessors, (192), 6 states have call successors, (172), 4 states have call predecessors, (172), 6 states have return successors, (172), 6 states have call predecessors, (172), 6 states have call successors, (172) [2023-12-15 19:48:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 9182 transitions. [2023-12-15 19:48:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-12-15 19:48:52,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:52,088 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:52,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:52,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:48:52,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:52,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash 156961890, now seen corresponding path program 1 times [2023-12-15 19:48:52,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:52,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274881505] [2023-12-15 19:48:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:52,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:52,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:52,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68868575] [2023-12-15 19:48:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:52,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:52,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:52,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:52,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:48:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:52,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 19:48:52,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3718 proven. 873 refuted. 0 times theorem prover too weak. 10029 trivial. 0 not checked. [2023-12-15 19:48:56,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 111 proven. 891 refuted. 0 times theorem prover too weak. 13618 trivial. 0 not checked. [2023-12-15 19:48:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274881505] [2023-12-15 19:48:59,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68868575] [2023-12-15 19:48:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68868575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:59,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-15 19:48:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430867227] [2023-12-15 19:48:59,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 19:48:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 19:48:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2023-12-15 19:48:59,753 INFO L87 Difference]: Start difference. First operand 5711 states and 9182 transitions. Second operand has 29 states, 28 states have (on average 8.428571428571429) internal successors, (236), 27 states have internal predecessors, (236), 10 states have call successors, (166), 6 states have call predecessors, (166), 12 states have return successors, (166), 9 states have call predecessors, (166), 10 states have call successors, (166) [2023-12-15 19:49:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:01,317 INFO L93 Difference]: Finished difference Result 8951 states and 14141 transitions. [2023-12-15 19:49:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 19:49:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 8.428571428571429) internal successors, (236), 27 states have internal predecessors, (236), 10 states have call successors, (166), 6 states have call predecessors, (166), 12 states have return successors, (166), 9 states have call predecessors, (166), 10 states have call successors, (166) Word has length 536 [2023-12-15 19:49:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:01,335 INFO L225 Difference]: With dead ends: 8951 [2023-12-15 19:49:01,335 INFO L226 Difference]: Without dead ends: 3241 [2023-12-15 19:49:01,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=788, Invalid=1762, Unknown=0, NotChecked=0, Total=2550 [2023-12-15 19:49:01,350 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 980 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:01,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 893 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:49:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3241 states. [2023-12-15 19:49:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3241 to 2893. [2023-12-15 19:49:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2216 states have (on average 1.4981949458483754) internal successors, (3320), 2226 states have internal predecessors, (3320), 606 states have call successors, (606), 70 states have call predecessors, (606), 70 states have return successors, (606), 596 states have call predecessors, (606), 606 states have call successors, (606) [2023-12-15 19:49:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4532 transitions. [2023-12-15 19:49:01,651 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4532 transitions. Word has length 536 [2023-12-15 19:49:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4532 transitions. [2023-12-15 19:49:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 8.428571428571429) internal successors, (236), 27 states have internal predecessors, (236), 10 states have call successors, (166), 6 states have call predecessors, (166), 12 states have return successors, (166), 9 states have call predecessors, (166), 10 states have call successors, (166) [2023-12-15 19:49:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4532 transitions. [2023-12-15 19:49:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-12-15 19:49:01,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:01,657 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:01,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:01,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:49:01,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash -872998402, now seen corresponding path program 1 times [2023-12-15 19:49:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340681416] [2023-12-15 19:49:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:01,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039579779] [2023-12-15 19:49:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:01,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:01,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:49:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:02,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:49:02,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:49:02,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:02,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340681416] [2023-12-15 19:49:02,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039579779] [2023-12-15 19:49:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039579779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:02,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:49:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785200185] [2023-12-15 19:49:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:49:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:49:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:02,740 INFO L87 Difference]: Start difference. First operand 2893 states and 4532 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:49:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:03,248 INFO L93 Difference]: Finished difference Result 8677 states and 13594 transitions. [2023-12-15 19:49:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:49:03,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 536 [2023-12-15 19:49:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:03,294 INFO L225 Difference]: With dead ends: 8677 [2023-12-15 19:49:03,294 INFO L226 Difference]: Without dead ends: 5785 [2023-12-15 19:49:03,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:49:03,303 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 157 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:03,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 759 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:49:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2023-12-15 19:49:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5783. [2023-12-15 19:49:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 4430 states have (on average 1.493002257336343) internal successors, (6614), 4450 states have internal predecessors, (6614), 1212 states have call successors, (1212), 140 states have call predecessors, (1212), 140 states have return successors, (1212), 1192 states have call predecessors, (1212), 1212 states have call successors, (1212) [2023-12-15 19:49:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 9038 transitions. [2023-12-15 19:49:03,986 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 9038 transitions. Word has length 536 [2023-12-15 19:49:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:03,986 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 9038 transitions. [2023-12-15 19:49:03,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:49:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 9038 transitions. [2023-12-15 19:49:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-12-15 19:49:03,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:03,993 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:04,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:04,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:04,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:04,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -888517120, now seen corresponding path program 1 times [2023-12-15 19:49:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:04,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228416936] [2023-12-15 19:49:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:04,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:04,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839788922] [2023-12-15 19:49:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:04,246 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:04,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:49:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:04,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:49:04,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1920 proven. 0 refuted. 0 times theorem prover too weak. 12700 trivial. 0 not checked. [2023-12-15 19:49:05,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:49:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228416936] [2023-12-15 19:49:05,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839788922] [2023-12-15 19:49:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839788922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:49:05,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:49:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:49:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490413748] [2023-12-15 19:49:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:06,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:49:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:49:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:49:06,002 INFO L87 Difference]: Start difference. First operand 5783 states and 9038 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:49:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:07,741 INFO L93 Difference]: Finished difference Result 23257 states and 36341 transitions. [2023-12-15 19:49:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:49:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 536 [2023-12-15 19:49:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:07,793 INFO L225 Difference]: With dead ends: 23257 [2023-12-15 19:49:07,794 INFO L226 Difference]: Without dead ends: 17475 [2023-12-15 19:49:07,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:49:07,812 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 464 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:07,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1765 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:49:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17475 states. [2023-12-15 19:49:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17475 to 17311. [2023-12-15 19:49:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17311 states, 13254 states have (on average 1.493134148181681) internal successors, (19790), 13314 states have internal predecessors, (19790), 3636 states have call successors, (3636), 420 states have call predecessors, (3636), 420 states have return successors, (3636), 3576 states have call predecessors, (3636), 3636 states have call successors, (3636) [2023-12-15 19:49:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17311 states to 17311 states and 27062 transitions. [2023-12-15 19:49:09,700 INFO L78 Accepts]: Start accepts. Automaton has 17311 states and 27062 transitions. Word has length 536 [2023-12-15 19:49:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:09,701 INFO L495 AbstractCegarLoop]: Abstraction has 17311 states and 27062 transitions. [2023-12-15 19:49:09,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:49:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17311 states and 27062 transitions. [2023-12-15 19:49:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2023-12-15 19:49:09,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:09,710 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:09,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:49:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:49:09,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 411162378, now seen corresponding path program 1 times [2023-12-15 19:49:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844430882] [2023-12-15 19:49:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:09,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526383359] [2023-12-15 19:49:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:09,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:09,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:09,963 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:49:09,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:49:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:11,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:49:11,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7737 proven. 528 refuted. 0 times theorem prover too weak. 6355 trivial. 0 not checked. [2023-12-15 19:49:12,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 19:49:23,429 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:49:23,429 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 19:49:24,007 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:49:24,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-15 19:49:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:49:24,216 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 538 with TraceHistMax 86,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-6-1 context. [2023-12-15 19:49:24,221 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:24,223 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:49:24,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:49:24 BoogieIcfgContainer [2023-12-15 19:49:24,227 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:49:24,228 INFO L158 Benchmark]: Toolchain (without parser) took 54148.25ms. Allocated memory was 302.0MB in the beginning and 997.2MB in the end (delta: 695.2MB). Free memory was 249.4MB in the beginning and 576.5MB in the end (delta: -327.1MB). Peak memory consumption was 368.6MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,230 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 211.8MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:49:24,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.87ms. Allocated memory is still 302.0MB. Free memory was 249.4MB in the beginning and 224.7MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.11ms. Allocated memory is still 302.0MB. Free memory was 224.7MB in the beginning and 215.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,233 INFO L158 Benchmark]: Boogie Preprocessor took 154.93ms. Allocated memory is still 302.0MB. Free memory was 215.3MB in the beginning and 204.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,233 INFO L158 Benchmark]: RCFGBuilder took 1013.41ms. Allocated memory is still 302.0MB. Free memory was 203.8MB in the beginning and 142.4MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,234 INFO L158 Benchmark]: TraceAbstraction took 52431.48ms. Allocated memory was 302.0MB in the beginning and 997.2MB in the end (delta: 695.2MB). Free memory was 141.9MB in the beginning and 576.5MB in the end (delta: -434.6MB). Peak memory consumption was 261.6MB. Max. memory is 8.0GB. [2023-12-15 19:49:24,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 211.8MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 439.87ms. Allocated memory is still 302.0MB. Free memory was 249.4MB in the beginning and 224.7MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 102.11ms. Allocated memory is still 302.0MB. Free memory was 224.7MB in the beginning and 215.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 154.93ms. Allocated memory is still 302.0MB. Free memory was 215.3MB in the beginning and 204.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1013.41ms. Allocated memory is still 302.0MB. Free memory was 203.8MB in the beginning and 142.4MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52431.48ms. Allocated memory was 302.0MB in the beginning and 997.2MB in the end (delta: 695.2MB). Free memory was 141.9MB in the beginning and 576.5MB in the end (delta: -434.6MB). Peak memory consumption was 261.6MB. 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 538 with TraceHistMax 86,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-6-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.4s, OverallIterations: 16, TraceHistogramMax: 86, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5958 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5659 mSDsluCounter, 15277 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9273 mSDsCounter, 1727 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4508 IncrementalHoareTripleChecker+Invalid, 6235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1727 mSolverCounterUnsat, 6004 mSDtfsCounter, 4508 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10719 GetRequests, 10589 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17311occurred in iteration=15, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 2650 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 8543 NumberOfCodeBlocks, 8543 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 10664 ConstructedInterpolants, 0 QuantifiedInterpolants, 44533 SizeOfPredicates, 44 NumberOfNonLiveVariables, 17530 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 289703/292400 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