/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-500_file-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:42:46,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:42:46,270 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 07:42:46,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:42:46,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:42:46,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:42:46,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:42:46,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:42:46,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:42:46,313 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:42:46,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:42:46,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:42:46,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:42:46,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:42:46,315 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:42:46,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:42:46,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:42:46,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:42:46,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:42:46,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:42:46,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:42:46,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:42:46,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:42:46,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:42:46,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:42:46,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:42:46,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:42:46,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:42:46,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:42:46,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:42:46,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:42:46,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:42:46,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:42:46,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:42:46,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:42:46,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:42:46,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:42:46,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:42:46,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:42:46,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:42:46,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:42:46,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:42:46,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:42:46,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:42:46,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:42:46,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:42:46,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:42:46,531 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:42:46,531 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:42:46,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-53.i [2023-12-19 07:42:47,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:42:47,850 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:42:47,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-53.i [2023-12-19 07:42:47,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/907ae8631/33d9d26e22b84958bb553b1d085fecb5/FLAGdf620f0e0 [2023-12-19 07:42:47,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/907ae8631/33d9d26e22b84958bb553b1d085fecb5 [2023-12-19 07:42:47,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:42:47,878 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:42:47,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:42:47,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:42:47,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:42:47,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:42:47" (1/1) ... [2023-12-19 07:42:47,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718e8545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:47, skipping insertion in model container [2023-12-19 07:42:47,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:42:47" (1/1) ... [2023-12-19 07:42:47,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:42:48,036 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-500_file-53.i[916,929] [2023-12-19 07:42:48,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:42:48,210 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:42:48,227 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-500_file-53.i[916,929] [2023-12-19 07:42:48,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:42:48,325 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:42:48,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48 WrapperNode [2023-12-19 07:42:48,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:42:48,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:42:48,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:42:48,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:42:48,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,428 INFO L138 Inliner]: procedures = 26, calls = 144, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1016 [2023-12-19 07:42:48,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:42:48,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:42:48,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:42:48,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:42:48,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,494 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 07:42:48,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:42:48,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:42:48,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:42:48,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:42:48,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (1/1) ... [2023-12-19 07:42:48,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:42:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:48,605 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 07:42:48,640 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 07:42:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:42:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:42:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:42:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:42:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:42:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:42:48,790 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:42:48,792 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:42:49,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:42:49,725 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:42:49,725 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:42:49,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:42:49 BoogieIcfgContainer [2023-12-19 07:42:49,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:42:49,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:42:49,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:42:49,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:42:49,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:42:47" (1/3) ... [2023-12-19 07:42:49,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f47638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:42:49, skipping insertion in model container [2023-12-19 07:42:49,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:42:48" (2/3) ... [2023-12-19 07:42:49,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f47638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:42:49, skipping insertion in model container [2023-12-19 07:42:49,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:42:49" (3/3) ... [2023-12-19 07:42:49,731 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-53.i [2023-12-19 07:42:49,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:42:49,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:42:49,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:42:49,818 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;@61cfaf55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:42:49,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:42:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 250 states have (on average 1.62) internal successors, (405), 251 states have internal predecessors, (405), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-19 07:42:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2023-12-19 07:42:49,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:49,885 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:49,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:49,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 348777255, now seen corresponding path program 1 times [2023-12-19 07:42:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:49,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197690264] [2023-12-19 07:42:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:50,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197690264] [2023-12-19 07:42:50,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:42:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439358814] [2023-12-19 07:42:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:50,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:50,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:50,320 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 07:42:50,326 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 07:42:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:50,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:42:50,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 33800 trivial. 0 not checked. [2023-12-19 07:42:50,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439358814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:50,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:42:50,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952561044] [2023-12-19 07:42:50,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:50,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:42:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:42:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:42:50,883 INFO L87 Difference]: Start difference. First operand has 384 states, 250 states have (on average 1.62) internal successors, (405), 251 states have internal predecessors, (405), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:42:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:50,971 INFO L93 Difference]: Finished difference Result 765 states and 1463 transitions. [2023-12-19 07:42:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:42:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) Word has length 821 [2023-12-19 07:42:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:51,000 INFO L225 Difference]: With dead ends: 765 [2023-12-19 07:42:51,000 INFO L226 Difference]: Without dead ends: 382 [2023-12-19 07:42:51,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 820 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 07:42:51,011 INFO L413 NwaCegarLoop]: 657 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, 657 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:51,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 657 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-19 07:42:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-12-19 07:42:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 249 states have (on average 1.5983935742971886) internal successors, (398), 249 states have internal predecessors, (398), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-12-19 07:42:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 660 transitions. [2023-12-19 07:42:51,114 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 660 transitions. Word has length 821 [2023-12-19 07:42:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:51,115 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 660 transitions. [2023-12-19 07:42:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:42:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 660 transitions. [2023-12-19 07:42:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-12-19 07:42:51,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:51,154 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:51,165 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 07:42:51,362 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 07:42:51,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:51,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1062385942, now seen corresponding path program 1 times [2023-12-19 07:42:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797923241] [2023-12-19 07:42:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:51,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797923241] [2023-12-19 07:42:51,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:42:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543844288] [2023-12-19 07:42:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:51,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:51,621 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 07:42:51,645 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 07:42:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:52,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:52,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:52,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:52,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543844288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:52,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:52,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:42:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263977163] [2023-12-19 07:42:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:52,736 INFO L87 Difference]: Start difference. First operand 382 states and 660 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:52,822 INFO L93 Difference]: Finished difference Result 1144 states and 1978 transitions. [2023-12-19 07:42:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 822 [2023-12-19 07:42:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:52,828 INFO L225 Difference]: With dead ends: 1144 [2023-12-19 07:42:52,828 INFO L226 Difference]: Without dead ends: 763 [2023-12-19 07:42:52,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 820 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 07:42:52,830 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 301 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:52,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1506 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-12-19 07:42:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 761. [2023-12-19 07:42:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 496 states have (on average 1.5987903225806452) internal successors, (793), 496 states have internal predecessors, (793), 262 states have call successors, (262), 2 states have call predecessors, (262), 2 states have return successors, (262), 262 states have call predecessors, (262), 262 states have call successors, (262) [2023-12-19 07:42:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1317 transitions. [2023-12-19 07:42:52,929 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1317 transitions. Word has length 822 [2023-12-19 07:42:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:52,931 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1317 transitions. [2023-12-19 07:42:52,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1317 transitions. [2023-12-19 07:42:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-12-19 07:42:52,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:52,939 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:52,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 07:42:53,146 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 07:42:53,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1570392341, now seen corresponding path program 1 times [2023-12-19 07:42:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788721871] [2023-12-19 07:42:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:53,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646117343] [2023-12-19 07:42:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:53,215 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 07:42:53,236 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 07:42:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:53,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:53,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:53,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:53,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788721871] [2023-12-19 07:42:53,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:42:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646117343] [2023-12-19 07:42:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646117343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:53,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:42:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126635446] [2023-12-19 07:42:53,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:53,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:53,671 INFO L87 Difference]: Start difference. First operand 761 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:53,720 INFO L93 Difference]: Finished difference Result 1921 states and 3355 transitions. [2023-12-19 07:42:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-12-19 07:42:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:53,726 INFO L225 Difference]: With dead ends: 1921 [2023-12-19 07:42:53,726 INFO L226 Difference]: Without dead ends: 1161 [2023-12-19 07:42:53,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 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 07:42:53,728 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 318 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:53,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1298 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:53,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-19 07:42:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1157. [2023-12-19 07:42:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 856 states have (on average 1.6775700934579438) internal successors, (1436), 858 states have internal predecessors, (1436), 296 states have call successors, (296), 4 states have call predecessors, (296), 4 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-12-19 07:42:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2028 transitions. [2023-12-19 07:42:53,819 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2028 transitions. Word has length 823 [2023-12-19 07:42:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 2028 transitions. [2023-12-19 07:42:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2028 transitions. [2023-12-19 07:42:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-12-19 07:42:53,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:53,826 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:53,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 07:42:54,034 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 07:42:54,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:54,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash -618535447, now seen corresponding path program 1 times [2023-12-19 07:42:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229187587] [2023-12-19 07:42:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:54,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:54,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707031416] [2023-12-19 07:42:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:54,125 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 07:42:54,150 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 07:42:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:54,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:54,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:54,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:54,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:54,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229187587] [2023-12-19 07:42:54,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:42:54,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707031416] [2023-12-19 07:42:54,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707031416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:54,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:54,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:42:54,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106229672] [2023-12-19 07:42:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:54,614 INFO L87 Difference]: Start difference. First operand 1157 states and 2028 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:54,693 INFO L93 Difference]: Finished difference Result 3123 states and 5502 transitions. [2023-12-19 07:42:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-12-19 07:42:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:54,706 INFO L225 Difference]: With dead ends: 3123 [2023-12-19 07:42:54,706 INFO L226 Difference]: Without dead ends: 1967 [2023-12-19 07:42:54,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 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 07:42:54,715 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 344 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:54,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1374 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2023-12-19 07:42:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1963. [2023-12-19 07:42:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1564 states have (on average 1.710997442455243) internal successors, (2676), 1570 states have internal predecessors, (2676), 390 states have call successors, (390), 8 states have call predecessors, (390), 8 states have return successors, (390), 384 states have call predecessors, (390), 390 states have call successors, (390) [2023-12-19 07:42:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 3456 transitions. [2023-12-19 07:42:54,851 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 3456 transitions. Word has length 823 [2023-12-19 07:42:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:54,852 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 3456 transitions. [2023-12-19 07:42:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 3456 transitions. [2023-12-19 07:42:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-12-19 07:42:54,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:54,859 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:54,869 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 07:42:55,069 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 07:42:55,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:55,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 642381803, now seen corresponding path program 1 times [2023-12-19 07:42:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264974791] [2023-12-19 07:42:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:55,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343819723] [2023-12-19 07:42:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:55,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:55,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:55,197 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 07:42:55,221 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 07:42:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:55,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:55,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:55,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:55,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264974791] [2023-12-19 07:42:55,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:42:55,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343819723] [2023-12-19 07:42:55,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343819723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:55,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:55,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:42:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582829519] [2023-12-19 07:42:55,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:55,667 INFO L87 Difference]: Start difference. First operand 1963 states and 3456 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:55,777 INFO L93 Difference]: Finished difference Result 5279 states and 9268 transitions. [2023-12-19 07:42:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:55,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-12-19 07:42:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:55,793 INFO L225 Difference]: With dead ends: 5279 [2023-12-19 07:42:55,794 INFO L226 Difference]: Without dead ends: 3317 [2023-12-19 07:42:55,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 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 07:42:55,800 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 320 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:55,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1393 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2023-12-19 07:42:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3313. [2023-12-19 07:42:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 2686 states have (on average 1.6999255398361877) internal successors, (4566), 2700 states have internal predecessors, (4566), 610 states have call successors, (610), 16 states have call predecessors, (610), 16 states have return successors, (610), 596 states have call predecessors, (610), 610 states have call successors, (610) [2023-12-19 07:42:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 5786 transitions. [2023-12-19 07:42:56,032 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 5786 transitions. Word has length 823 [2023-12-19 07:42:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 3313 states and 5786 transitions. [2023-12-19 07:42:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 5786 transitions. [2023-12-19 07:42:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-12-19 07:42:56,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:56,045 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:56,070 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 07:42:56,256 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 07:42:56,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:56,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:56,257 INFO L85 PathProgramCache]: Analyzing trace with hash 565481005, now seen corresponding path program 1 times [2023-12-19 07:42:56,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52774984] [2023-12-19 07:42:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:56,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813106663] [2023-12-19 07:42:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:56,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:56,346 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 07:42:56,367 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 07:42:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:56,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:56,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:56,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:56,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:56,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52774984] [2023-12-19 07:42:56,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:42:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813106663] [2023-12-19 07:42:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813106663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:56,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:56,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:42:56,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002039310] [2023-12-19 07:42:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:56,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:56,887 INFO L87 Difference]: Start difference. First operand 3313 states and 5786 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:57,073 INFO L93 Difference]: Finished difference Result 9841 states and 17164 transitions. [2023-12-19 07:42:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-12-19 07:42:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:57,105 INFO L225 Difference]: With dead ends: 9841 [2023-12-19 07:42:57,105 INFO L226 Difference]: Without dead ends: 6529 [2023-12-19 07:42:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 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 07:42:57,114 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 617 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:57,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1808 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2023-12-19 07:42:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 6511. [2023-12-19 07:42:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 5258 states have (on average 1.6892354507417269) internal successors, (8882), 5286 states have internal predecessors, (8882), 1220 states have call successors, (1220), 32 states have call predecessors, (1220), 32 states have return successors, (1220), 1192 states have call predecessors, (1220), 1220 states have call successors, (1220) [2023-12-19 07:42:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 11322 transitions. [2023-12-19 07:42:57,582 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 11322 transitions. Word has length 823 [2023-12-19 07:42:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:57,583 INFO L495 AbstractCegarLoop]: Abstraction has 6511 states and 11322 transitions. [2023-12-19 07:42:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 11322 transitions. [2023-12-19 07:42:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-12-19 07:42:57,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:57,597 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:57,607 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 07:42:57,806 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 07:42:57,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1806258257, now seen corresponding path program 1 times [2023-12-19 07:42:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386381872] [2023-12-19 07:42:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:57,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:57,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550225129] [2023-12-19 07:42:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:57,893 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 07:42:57,894 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 07:42:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:42:58,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:42:58,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:42:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:42:58,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:42:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:42:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386381872] [2023-12-19 07:42:58,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:42:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550225129] [2023-12-19 07:42:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550225129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:42:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:42:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:42:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246421679] [2023-12-19 07:42:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:42:58,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:42:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:42:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:42:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:42:58,324 INFO L87 Difference]: Start difference. First operand 6511 states and 11322 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:58,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:42:58,622 INFO L93 Difference]: Finished difference Result 19307 states and 33548 transitions. [2023-12-19 07:42:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:42:58,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-12-19 07:42:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:42:58,686 INFO L225 Difference]: With dead ends: 19307 [2023-12-19 07:42:58,686 INFO L226 Difference]: Without dead ends: 12797 [2023-12-19 07:42:58,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 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 07:42:58,706 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 641 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:42:58,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1918 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:42:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12797 states. [2023-12-19 07:42:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12797 to 12795. [2023-12-19 07:42:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12795 states, 10290 states have (on average 1.6763848396501457) internal successors, (17250), 10346 states have internal predecessors, (17250), 2440 states have call successors, (2440), 64 states have call predecessors, (2440), 64 states have return successors, (2440), 2384 states have call predecessors, (2440), 2440 states have call successors, (2440) [2023-12-19 07:42:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12795 states to 12795 states and 22130 transitions. [2023-12-19 07:42:59,371 INFO L78 Accepts]: Start accepts. Automaton has 12795 states and 22130 transitions. Word has length 823 [2023-12-19 07:42:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:42:59,372 INFO L495 AbstractCegarLoop]: Abstraction has 12795 states and 22130 transitions. [2023-12-19 07:42:59,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:42:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12795 states and 22130 transitions. [2023-12-19 07:42:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-12-19 07:42:59,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:42:59,386 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:59,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:42:59,598 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 07:42:59,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:42:59,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:42:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1389082666, now seen corresponding path program 1 times [2023-12-19 07:42:59,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:42:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416884408] [2023-12-19 07:42:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:59,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:42:59,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:42:59,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890825512] [2023-12-19 07:42:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:42:59,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:42:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:42:59,667 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 07:42:59,669 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 07:43:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:00,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:43:00,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:43:00,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416884408] [2023-12-19 07:43:00,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890825512] [2023-12-19 07:43:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890825512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:00,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:00,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 07:43:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591970471] [2023-12-19 07:43:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:43:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:43:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:43:00,214 INFO L87 Difference]: Start difference. First operand 12795 states and 22130 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:01,290 INFO L93 Difference]: Finished difference Result 47065 states and 81541 transitions. [2023-12-19 07:43:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:43:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 824 [2023-12-19 07:43:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:01,397 INFO L225 Difference]: With dead ends: 47065 [2023-12-19 07:43:01,397 INFO L226 Difference]: Without dead ends: 34271 [2023-12-19 07:43:01,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:43:01,440 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1360 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:01,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 3274 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:43:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34271 states. [2023-12-19 07:43:02,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34271 to 28315. [2023-12-19 07:43:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28315 states, 24402 states have (on average 1.729776247848537) internal successors, (42210), 24522 states have internal predecessors, (42210), 3784 states have call successors, (3784), 128 states have call predecessors, (3784), 128 states have return successors, (3784), 3664 states have call predecessors, (3784), 3784 states have call successors, (3784) [2023-12-19 07:43:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28315 states to 28315 states and 49778 transitions. [2023-12-19 07:43:02,551 INFO L78 Accepts]: Start accepts. Automaton has 28315 states and 49778 transitions. Word has length 824 [2023-12-19 07:43:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:02,552 INFO L495 AbstractCegarLoop]: Abstraction has 28315 states and 49778 transitions. [2023-12-19 07:43:02,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28315 states and 49778 transitions. [2023-12-19 07:43:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-12-19 07:43:02,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:02,572 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:02,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:43:02,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:02,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash 359723368, now seen corresponding path program 1 times [2023-12-19 07:43:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054391434] [2023-12-19 07:43:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:02,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535155521] [2023-12-19 07:43:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:02,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:02,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:02,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:02,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:43:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:03,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 07:43:03,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:43:03,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:03,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054391434] [2023-12-19 07:43:03,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535155521] [2023-12-19 07:43:03,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535155521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:03,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 07:43:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665961648] [2023-12-19 07:43:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 07:43:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 07:43:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:43:03,456 INFO L87 Difference]: Start difference. First operand 28315 states and 49778 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:05,776 INFO L93 Difference]: Finished difference Result 89497 states and 156967 transitions. [2023-12-19 07:43:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:43:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 824 [2023-12-19 07:43:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:05,938 INFO L225 Difference]: With dead ends: 89497 [2023-12-19 07:43:05,938 INFO L226 Difference]: Without dead ends: 61183 [2023-12-19 07:43:05,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:43:05,999 INFO L413 NwaCegarLoop]: 1347 mSDtfsCounter, 2630 mSDsluCounter, 6214 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 7561 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:06,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 7561 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:43:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61183 states. [2023-12-19 07:43:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61183 to 60903. [2023-12-19 07:43:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60903 states, 52826 states have (on average 1.7244917275583993) internal successors, (91098), 53102 states have internal predecessors, (91098), 7724 states have call successors, (7724), 352 states have call predecessors, (7724), 352 states have return successors, (7724), 7448 states have call predecessors, (7724), 7724 states have call successors, (7724) [2023-12-19 07:43:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60903 states to 60903 states and 106546 transitions. [2023-12-19 07:43:08,452 INFO L78 Accepts]: Start accepts. Automaton has 60903 states and 106546 transitions. Word has length 824 [2023-12-19 07:43:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:08,453 INFO L495 AbstractCegarLoop]: Abstraction has 60903 states and 106546 transitions. [2023-12-19 07:43:08,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 60903 states and 106546 transitions. [2023-12-19 07:43:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-12-19 07:43:08,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:08,479 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:08,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:08,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:08,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:08,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1339126680, now seen corresponding path program 1 times [2023-12-19 07:43:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442828002] [2023-12-19 07:43:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:08,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456278948] [2023-12-19 07:43:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:08,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:08,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:08,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:43:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:09,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:43:09,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:43:10,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:10,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:10,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442828002] [2023-12-19 07:43:10,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:10,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456278948] [2023-12-19 07:43:10,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456278948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:10,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:10,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:43:10,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055040358] [2023-12-19 07:43:10,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:10,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:43:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:43:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:43:10,174 INFO L87 Difference]: Start difference. First operand 60903 states and 106546 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:17,950 INFO L93 Difference]: Finished difference Result 379845 states and 655739 transitions. [2023-12-19 07:43:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:43:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 824 [2023-12-19 07:43:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:18,935 INFO L225 Difference]: With dead ends: 379845 [2023-12-19 07:43:18,936 INFO L226 Difference]: Without dead ends: 318943 [2023-12-19 07:43:19,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:19,070 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 2621 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 1090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1090 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:19,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2621 Valid, 3081 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1090 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 07:43:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318943 states. [2023-12-19 07:43:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318943 to 298023. [2023-12-19 07:43:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298023 states, 259634 states have (on average 1.7025274039609604) internal successors, (442034), 261038 states have internal predecessors, (442034), 36628 states have call successors, (36628), 1760 states have call predecessors, (36628), 1760 states have return successors, (36628), 35224 states have call predecessors, (36628), 36628 states have call successors, (36628) [2023-12-19 07:43:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298023 states to 298023 states and 515290 transitions. [2023-12-19 07:43:31,525 INFO L78 Accepts]: Start accepts. Automaton has 298023 states and 515290 transitions. Word has length 824 [2023-12-19 07:43:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:31,526 INFO L495 AbstractCegarLoop]: Abstraction has 298023 states and 515290 transitions. [2023-12-19 07:43:31,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:31,526 INFO L276 IsEmpty]: Start isEmpty. Operand 298023 states and 515290 transitions. [2023-12-19 07:43:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2023-12-19 07:43:31,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:31,587 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:31,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:31,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:43:31,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:31,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1934772262, now seen corresponding path program 1 times [2023-12-19 07:43:31,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:31,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511775714] [2023-12-19 07:43:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:31,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:31,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608902480] [2023-12-19 07:43:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:31,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:31,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:31,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:43:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:32,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:43:32,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-12-19 07:43:33,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:33,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511775714] [2023-12-19 07:43:33,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608902480] [2023-12-19 07:43:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608902480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:33,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:33,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:43:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737780873] [2023-12-19 07:43:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:33,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:43:33,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:43:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:43:33,339 INFO L87 Difference]: Start difference. First operand 298023 states and 515290 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:43:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:55,120 INFO L93 Difference]: Finished difference Result 1036669 states and 1763067 transitions. [2023-12-19 07:43:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:43:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 824 [2023-12-19 07:43:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:57,485 INFO L225 Difference]: With dead ends: 1036669 [2023-12-19 07:43:57,485 INFO L226 Difference]: Without dead ends: 738647 [2023-12-19 07:43:57,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:57,912 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 1613 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:57,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 3498 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 07:43:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738647 states. [2023-12-19 07:44:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738647 to 519871. [2023-12-19 07:44:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519871 states, 452538 states have (on average 1.6900812749426568) internal successors, (764826), 455094 states have internal predecessors, (764826), 64164 states have call successors, (64164), 3168 states have call predecessors, (64164), 3168 states have return successors, (64164), 61608 states have call predecessors, (64164), 64164 states have call successors, (64164) [2023-12-19 07:44:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519871 states to 519871 states and 893154 transitions. [2023-12-19 07:44:24,130 INFO L78 Accepts]: Start accepts. Automaton has 519871 states and 893154 transitions. Word has length 824 [2023-12-19 07:44:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:24,132 INFO L495 AbstractCegarLoop]: Abstraction has 519871 states and 893154 transitions. [2023-12-19 07:44:24,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-12-19 07:44:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 519871 states and 893154 transitions.