/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-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:03:12,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:03:12,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:03:12,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:03:12,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:03:12,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:03:12,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:03:12,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:03:12,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:03:12,534 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:03:12,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:03:12,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:03:12,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:03:12,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:03:12,536 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:03:12,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:03:12,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:03:12,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:03:12,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:03:12,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:03:12,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:03:12,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:03:12,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:03:12,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:03:12,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:03:12,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:03:12,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:03:12,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:03:12,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:03:12,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:03:12,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:03:12,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:03:12,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:03:12,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:03:12,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:03:12,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:03:12,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:03:12,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:03:12,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:03:12,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:03:12,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:03:12,782 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:03:12,783 INFO L431 ainManager$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-7.i [2023-12-19 07:03:13,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:03:14,112 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:03:14,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-12-19 07:03:14,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec62ec04/ccacee3fedfd48c6b2d363f546ae1f59/FLAG05db74e55 [2023-12-19 07:03:14,131 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ec62ec04/ccacee3fedfd48c6b2d363f546ae1f59 [2023-12-19 07:03:14,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:03:14,134 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:03:14,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:03:14,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:03:14,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:03:14,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7adfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14, skipping insertion in model container [2023-12-19 07:03:14,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,176 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:03:14,279 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-7.i[915,928] [2023-12-19 07:03:14,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:03:14,479 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:03:14,495 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-7.i[915,928] [2023-12-19 07:03:14,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:03:14,550 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:03:14,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14 WrapperNode [2023-12-19 07:03:14,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:03:14,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:03:14,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:03:14,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:03:14,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,625 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 543 [2023-12-19 07:03:14,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:03:14,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:03:14,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:03:14,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:03:14,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,682 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]. [2023-12-19 07:03:14,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:03:14,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:03:14,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:03:14,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:03:14,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (1/1) ... [2023-12-19 07:03:14,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:03:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:14,793 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) [2023-12-19 07:03:14,830 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 [2023-12-19 07:03:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:03:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:03:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:03:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:03:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:03:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:03:15,013 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:03:15,014 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:03:15,593 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:03:15,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:03:15,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:03:15,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:03:15 BoogieIcfgContainer [2023-12-19 07:03:15,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:03:15,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:03:15,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:03:15,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:03:15,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:03:14" (1/3) ... [2023-12-19 07:03:15,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcfd830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:03:15, skipping insertion in model container [2023-12-19 07:03:15,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:03:14" (2/3) ... [2023-12-19 07:03:15,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcfd830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:03:15, skipping insertion in model container [2023-12-19 07:03:15,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:03:15" (3/3) ... [2023-12-19 07:03:15,643 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-7.i [2023-12-19 07:03:15,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:03:15,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:03:15,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:03:15,705 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;@49dfe9af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:03:15,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:03:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 132 states have (on average 1.5681818181818181) internal successors, (207), 133 states have internal predecessors, (207), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-19 07:03:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 07:03:15,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:15,729 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:03:15,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:15,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 309281221, now seen corresponding path program 1 times [2023-12-19 07:03:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395180878] [2023-12-19 07:03:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395180878] [2023-12-19 07:03:15,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:03:15,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861892859] [2023-12-19 07:03:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:15,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:15,980 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) [2023-12-19 07:03:16,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:03:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:16,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:03:16,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2023-12-19 07:03:16,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861892859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:16,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:03:16,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863518512] [2023-12-19 07:03:16,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:16,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:03:16,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:03:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:03:16,485 INFO L87 Difference]: Start difference. First operand has 212 states, 132 states have (on average 1.5681818181818181) internal successors, (207), 133 states have internal predecessors, (207), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-19 07:03:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:16,643 INFO L93 Difference]: Finished difference Result 421 states and 797 transitions. [2023-12-19 07:03:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:03:16,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 478 [2023-12-19 07:03:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:16,659 INFO L225 Difference]: With dead ends: 421 [2023-12-19 07:03:16,660 INFO L226 Difference]: Without dead ends: 210 [2023-12-19 07:03:16,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:03:16,672 INFO L413 NwaCegarLoop]: 353 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, 353 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:16,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:03:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-19 07:03:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-12-19 07:03:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 131 states have internal predecessors, (202), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-19 07:03:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 356 transitions. [2023-12-19 07:03:16,749 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 356 transitions. Word has length 478 [2023-12-19 07:03:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:16,750 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 356 transitions. [2023-12-19 07:03:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-19 07:03:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 356 transitions. [2023-12-19 07:03:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 07:03:16,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:16,762 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:03:16,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:16,969 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 [2023-12-19 07:03:16,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash 778512183, now seen corresponding path program 1 times [2023-12-19 07:03:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407381939] [2023-12-19 07:03:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:17,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:17,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461931075] [2023-12-19 07:03:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:17,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:17,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:17,141 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) [2023-12-19 07:03:17,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:03:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:17,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:03:17,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-19 07:03:17,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407381939] [2023-12-19 07:03:17,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461931075] [2023-12-19 07:03:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461931075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:17,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:03:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405746925] [2023-12-19 07:03:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:03:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:03:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:03:17,554 INFO L87 Difference]: Start difference. First operand 210 states and 356 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:18,019 INFO L93 Difference]: Finished difference Result 1042 states and 1730 transitions. [2023-12-19 07:03:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:03:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2023-12-19 07:03:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:18,029 INFO L225 Difference]: With dead ends: 1042 [2023-12-19 07:03:18,029 INFO L226 Difference]: Without dead ends: 833 [2023-12-19 07:03:18,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:03:18,032 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 932 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:18,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1611 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:03:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-19 07:03:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 818. [2023-12-19 07:03:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 497 states have (on average 1.4647887323943662) internal successors, (728), 502 states have internal predecessors, (728), 314 states have call successors, (314), 6 states have call predecessors, (314), 6 states have return successors, (314), 309 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-19 07:03:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1356 transitions. [2023-12-19 07:03:18,142 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1356 transitions. Word has length 478 [2023-12-19 07:03:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:18,144 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1356 transitions. [2023-12-19 07:03:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1356 transitions. [2023-12-19 07:03:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 07:03:18,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:18,149 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:03:18,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:18,356 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 [2023-12-19 07:03:18,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:18,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash 191706169, now seen corresponding path program 1 times [2023-12-19 07:03:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587611326] [2023-12-19 07:03:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:18,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:18,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110326283] [2023-12-19 07:03:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:18,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:18,422 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) [2023-12-19 07:03:18,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:03:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:18,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:03:18,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-19 07:03:18,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587611326] [2023-12-19 07:03:18,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110326283] [2023-12-19 07:03:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110326283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:18,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:18,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:18,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862441606] [2023-12-19 07:03:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:18,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:18,682 INFO L87 Difference]: Start difference. First operand 818 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:18,752 INFO L93 Difference]: Finished difference Result 1845 states and 3040 transitions. [2023-12-19 07:03:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:18,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2023-12-19 07:03:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:18,759 INFO L225 Difference]: With dead ends: 1845 [2023-12-19 07:03:18,759 INFO L226 Difference]: Without dead ends: 1028 [2023-12-19 07:03:18,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:18,762 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 212 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:18,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 850 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-12-19 07:03:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1024. [2023-12-19 07:03:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 603 states have (on average 1.4096185737976783) internal successors, (850), 610 states have internal predecessors, (850), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-12-19 07:03:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1674 transitions. [2023-12-19 07:03:18,860 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1674 transitions. Word has length 478 [2023-12-19 07:03:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:18,861 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1674 transitions. [2023-12-19 07:03:18,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1674 transitions. [2023-12-19 07:03:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 07:03:18,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:18,864 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:03:18,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:19,071 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 [2023-12-19 07:03:19,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:19,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -830971595, now seen corresponding path program 1 times [2023-12-19 07:03:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750519836] [2023-12-19 07:03:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:19,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:19,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457867129] [2023-12-19 07:03:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:19,150 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) [2023-12-19 07:03:19,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:03:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:19,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:03:19,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-19 07:03:19,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:03:19,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750519836] [2023-12-19 07:03:19,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457867129] [2023-12-19 07:03:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457867129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:03:19,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:03:19,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:03:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108899902] [2023-12-19 07:03:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:03:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:03:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:03:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:19,470 INFO L87 Difference]: Start difference. First operand 1024 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:03:19,529 INFO L93 Difference]: Finished difference Result 2061 states and 3373 transitions. [2023-12-19 07:03:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:03:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2023-12-19 07:03:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:03:19,536 INFO L225 Difference]: With dead ends: 2061 [2023-12-19 07:03:19,536 INFO L226 Difference]: Without dead ends: 1038 [2023-12-19 07:03:19,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:03:19,540 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 10 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:03:19,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 703 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:03:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-19 07:03:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1026. [2023-12-19 07:03:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 605 states have (on average 1.4082644628099175) internal successors, (852), 612 states have internal predecessors, (852), 412 states have call successors, (412), 8 states have call predecessors, (412), 8 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2023-12-19 07:03:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1676 transitions. [2023-12-19 07:03:19,604 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1676 transitions. Word has length 478 [2023-12-19 07:03:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:03:19,605 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1676 transitions. [2023-12-19 07:03:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:03:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1676 transitions. [2023-12-19 07:03:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-19 07:03:19,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:03:19,608 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:03:19,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:03:19,816 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 [2023-12-19 07:03:19,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:03:19,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:03:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1723965986, now seen corresponding path program 1 times [2023-12-19 07:03:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:03:19,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806587889] [2023-12-19 07:03:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:03:19,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:03:19,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778082199] [2023-12-19 07:03:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:03:19,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:03:19,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:03:19,854 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) [2023-12-19 07:03:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:03:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:03:20,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:03:20,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:03:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5172 proven. 72 refuted. 0 times theorem prover too weak. 6460 trivial. 0 not checked. [2023-12-19 07:03:21,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:03:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 156 proven. 72 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2023-12-19 07:03:22,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:03:22,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806587889] [2023-12-19 07:03:22,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:03:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778082199] [2023-12-19 07:03:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778082199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:03:22,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:03:22,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-19 07:03:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102486694] [2023-12-19 07:03:22,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:03:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 07:03:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:03:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 07:03:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-12-19 07:03:22,868 INFO L87 Difference]: Start difference. First operand 1026 states and 1676 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-19 07:03:27,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:03:46,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:03:55,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:04:00,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:04:46,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:04:50,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:05:01,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:05:53,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:05:57,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:06:05,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:06:53,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:07:00,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:07:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:07:24,795 INFO L93 Difference]: Finished difference Result 53045 states and 86861 transitions. [2023-12-19 07:07:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2023-12-19 07:07:24,796 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 479 [2023-12-19 07:07:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:07:25,044 INFO L225 Difference]: With dead ends: 53045 [2023-12-19 07:07:25,045 INFO L226 Difference]: Without dead ends: 52020 [2023-12-19 07:07:25,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1016 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25120 ImplicationChecksByTransitivity, 108.0s TimeCoverageRelationStatistics Valid=10898, Invalid=47906, Unknown=2, NotChecked=0, Total=58806 [2023-12-19 07:07:25,083 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 13001 mSDsluCounter, 11129 mSDsCounter, 0 mSdLazyCounter, 13705 mSolverCounterSat, 4408 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13110 SdHoareTripleChecker+Valid, 12260 SdHoareTripleChecker+Invalid, 18122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4408 IncrementalHoareTripleChecker+Valid, 13705 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:07:25,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13110 Valid, 12260 Invalid, 18122 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4408 Valid, 13705 Invalid, 9 Unknown, 0 Unchecked, 127.7s Time] [2023-12-19 07:07:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52020 states. [2023-12-19 07:07:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52020 to 34038. [2023-12-19 07:07:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34038 states, 22833 states have (on average 1.5112337406385494) internal successors, (34506), 23215 states have internal predecessors, (34506), 10960 states have call successors, (10960), 244 states have call predecessors, (10960), 244 states have return successors, (10960), 10578 states have call predecessors, (10960), 10960 states have call successors, (10960) [2023-12-19 07:07:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34038 states to 34038 states and 56426 transitions. [2023-12-19 07:07:29,456 INFO L78 Accepts]: Start accepts. Automaton has 34038 states and 56426 transitions. Word has length 479 [2023-12-19 07:07:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:07:29,458 INFO L495 AbstractCegarLoop]: Abstraction has 34038 states and 56426 transitions. [2023-12-19 07:07:29,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-19 07:07:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 34038 states and 56426 transitions. [2023-12-19 07:07:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-19 07:07:29,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:07:29,469 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:07:29,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:07:29,676 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 [2023-12-19 07:07:29,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:07:29,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:07:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1270512606, now seen corresponding path program 1 times [2023-12-19 07:07:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:07:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773814378] [2023-12-19 07:07:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:07:29,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:07:29,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:07:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619020023] [2023-12-19 07:07:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:07:29,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:07:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:07:29,714 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) [2023-12-19 07:07:29,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:07:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:07:30,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 07:07:30,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:07:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-19 07:07:30,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:07:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:07:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773814378] [2023-12-19 07:07:30,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:07:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619020023] [2023-12-19 07:07:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619020023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:07:30,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:07:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 07:07:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639455706] [2023-12-19 07:07:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:07:30,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:07:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:07:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:07:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:07:30,330 INFO L87 Difference]: Start difference. First operand 34038 states and 56426 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:07:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:07:48,800 INFO L93 Difference]: Finished difference Result 177406 states and 292530 transitions. [2023-12-19 07:07:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 07:07:48,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 479 [2023-12-19 07:07:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:07:49,449 INFO L225 Difference]: With dead ends: 177406 [2023-12-19 07:07:49,449 INFO L226 Difference]: Without dead ends: 143369 [2023-12-19 07:07:49,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:07:49,555 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 2206 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:07:49,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 2886 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 07:07:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143369 states. [2023-12-19 07:07:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143369 to 51388. [2023-12-19 07:07:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51388 states, 35039 states have (on average 1.5260709495133993) internal successors, (53472), 35603 states have internal predecessors, (53472), 15992 states have call successors, (15992), 356 states have call predecessors, (15992), 356 states have return successors, (15992), 15428 states have call predecessors, (15992), 15992 states have call successors, (15992) [2023-12-19 07:07:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51388 states to 51388 states and 85456 transitions. [2023-12-19 07:07:58,087 INFO L78 Accepts]: Start accepts. Automaton has 51388 states and 85456 transitions. Word has length 479 [2023-12-19 07:07:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:07:58,088 INFO L495 AbstractCegarLoop]: Abstraction has 51388 states and 85456 transitions. [2023-12-19 07:07:58,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:07:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 51388 states and 85456 transitions. [2023-12-19 07:07:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-19 07:07:58,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:07:58,313 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:07:58,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:07:58,513 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 [2023-12-19 07:07:58,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:07:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:07:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash 126745314, now seen corresponding path program 1 times [2023-12-19 07:07:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:07:58,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438179415] [2023-12-19 07:07:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:07:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:07:58,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:07:58,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663845573] [2023-12-19 07:07:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:07:58,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:07:58,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:07:58,556 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) [2023-12-19 07:07:58,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:09:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:09:57,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 07:09:57,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:09:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 7726 proven. 459 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2023-12-19 07:09:58,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:10:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 234 proven. 219 refuted. 0 times theorem prover too weak. 11251 trivial. 0 not checked. [2023-12-19 07:10:10,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:10:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438179415] [2023-12-19 07:10:10,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:10:10,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663845573] [2023-12-19 07:10:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663845573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:10:10,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:10:10,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-19 07:10:10,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869835524] [2023-12-19 07:10:10,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:10:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 07:10:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:10:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 07:10:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=637, Unknown=1, NotChecked=0, Total=812 [2023-12-19 07:10:10,755 INFO L87 Difference]: Start difference. First operand 51388 states and 85456 transitions. Second operand has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 5 states have call successors, (126), 3 states have call predecessors, (126), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) [2023-12-19 07:10:32,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:10:47,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:10:58,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:02,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:11,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:19,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:20,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:26,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:32,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:11:42,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:12:08,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:12:12,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:12:13,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:12:33,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:12:37,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 07:13:07,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:13:10,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 07:13:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:13:17,383 INFO L93 Difference]: Finished difference Result 302330 states and 500480 transitions. [2023-12-19 07:13:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-19 07:13:17,384 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 5 states have call successors, (126), 3 states have call predecessors, (126), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) Word has length 479 [2023-12-19 07:13:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:13:18,719 INFO L225 Difference]: With dead ends: 302330 [2023-12-19 07:13:18,719 INFO L226 Difference]: Without dead ends: 250943 [2023-12-19 07:13:18,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5226 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=3838, Invalid=12670, Unknown=4, NotChecked=0, Total=16512 [2023-12-19 07:13:18,950 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 9416 mSDsluCounter, 8294 mSDsCounter, 0 mSdLazyCounter, 9883 mSolverCounterSat, 4125 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9470 SdHoareTripleChecker+Valid, 9517 SdHoareTripleChecker+Invalid, 14019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4125 IncrementalHoareTripleChecker+Valid, 9883 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:13:18,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9470 Valid, 9517 Invalid, 14019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4125 Valid, 9883 Invalid, 11 Unknown, 0 Unchecked, 110.1s Time] [2023-12-19 07:13:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250943 states. [2023-12-19 07:13:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250943 to 111395. [2023-12-19 07:13:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111395 states, 74506 states have (on average 1.5055431777306525) internal successors, (112172), 75742 states have internal predecessors, (112172), 36344 states have call successors, (36344), 544 states have call predecessors, (36344), 544 states have return successors, (36344), 35108 states have call predecessors, (36344), 36344 states have call successors, (36344) [2023-12-19 07:13:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111395 states to 111395 states and 184860 transitions. [2023-12-19 07:13:44,390 INFO L78 Accepts]: Start accepts. Automaton has 111395 states and 184860 transitions. Word has length 479 [2023-12-19 07:13:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:13:44,391 INFO L495 AbstractCegarLoop]: Abstraction has 111395 states and 184860 transitions. [2023-12-19 07:13:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 5 states have call successors, (126), 3 states have call predecessors, (126), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) [2023-12-19 07:13:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 111395 states and 184860 transitions. [2023-12-19 07:13:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-19 07:13:44,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:13:44,405 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:13:44,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 07:13:44,624 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 [2023-12-19 07:13:44,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:13:44,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:13:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2004579780, now seen corresponding path program 1 times [2023-12-19 07:13:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:13:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421420654] [2023-12-19 07:13:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:13:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:13:44,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:13:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292056185] [2023-12-19 07:13:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:13:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:13:44,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:13:44,659 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) [2023-12-19 07:13:44,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:13:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:13:45,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 07:13:45,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:13:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2023-12-19 07:13:45,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:13:45,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:13:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421420654] [2023-12-19 07:13:45,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:13:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292056185] [2023-12-19 07:13:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292056185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:13:45,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:13:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 07:13:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049877244] [2023-12-19 07:13:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:13:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:13:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:13:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:13:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:13:45,401 INFO L87 Difference]: Start difference. First operand 111395 states and 184860 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2023-12-19 07:14:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:14:53,227 INFO L93 Difference]: Finished difference Result 404677 states and 663955 transitions. [2023-12-19 07:14:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 07:14:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 480 [2023-12-19 07:14:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:14:54,513 INFO L225 Difference]: With dead ends: 404677 [2023-12-19 07:14:54,513 INFO L226 Difference]: Without dead ends: 293283 [2023-12-19 07:14:55,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2023-12-19 07:14:55,043 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 2016 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:14:55,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 4143 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 07:14:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293283 states.