/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_operatoramount_amount500_file-79.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:18:26,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:18:26,367 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 14:18:26,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:18:26,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:18:26,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:18:26,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:18:26,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:18:26,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:18:26,398 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:18:26,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:18:26,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:18:26,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:18:26,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:18:26,399 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:18:26,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:18:26,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:18:26,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:18:26,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:18:26,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:18:26,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:18:26,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:18:26,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:18:26,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:18:26,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:18:26,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:18:26,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:18:26,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:18:26,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:18:26,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:18:26,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:18:26,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:18:26,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:18:26,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:18:26,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:18:26,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:18:26,612 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:18:26,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2023-12-19 14:18:27,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:18:27,864 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:18:27,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-79.i [2023-12-19 14:18:27,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c60debf/cfd83061118041389848fc1a95b22ff9/FLAGa8fe145f6 [2023-12-19 14:18:27,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c60debf/cfd83061118041389848fc1a95b22ff9 [2023-12-19 14:18:27,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:18:27,886 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:18:27,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:18:27,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:18:27,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:18:27,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:18:27" (1/1) ... [2023-12-19 14:18:27,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2cea91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:27, skipping insertion in model container [2023-12-19 14:18:27,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:18:27" (1/1) ... [2023-12-19 14:18:27,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:18:28,074 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_operatoramount_amount500_file-79.i[916,929] [2023-12-19 14:18:28,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:18:28,291 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:18:28,299 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_operatoramount_amount500_file-79.i[916,929] [2023-12-19 14:18:28,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:18:28,408 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:18:28,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28 WrapperNode [2023-12-19 14:18:28,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:18:28,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:18:28,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:18:28,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:18:28,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,573 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 766 [2023-12-19 14:18:28,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:18:28,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:18:28,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:18:28,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:18:28,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,632 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 14:18:28,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:18:28,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:18:28,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:18:28,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:18:28,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (1/1) ... [2023-12-19 14:18:28,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:18:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:28,735 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 14:18:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:18:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:18:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:18:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:18:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:18:28,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:18:28,751 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 14:18:28,839 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:18:28,840 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:18:29,672 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:18:29,718 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:18:29,719 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:18:29,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:18:29 BoogieIcfgContainer [2023-12-19 14:18:29,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:18:29,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:18:29,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:18:29,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:18:29,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:18:27" (1/3) ... [2023-12-19 14:18:29,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127e3afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:18:29, skipping insertion in model container [2023-12-19 14:18:29,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:18:28" (2/3) ... [2023-12-19 14:18:29,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127e3afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:18:29, skipping insertion in model container [2023-12-19 14:18:29,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:18:29" (3/3) ... [2023-12-19 14:18:29,725 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-79.i [2023-12-19 14:18:29,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:18:29,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:18:29,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:18:29,790 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;@149ab761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:18:29,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:18:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 214 states have (on average 1.6308411214953271) internal successors, (349), 215 states have internal predecessors, (349), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-19 14:18:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 14:18:29,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:29,827 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:29,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:29,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:29,834 INFO L85 PathProgramCache]: Analyzing trace with hash -498709850, now seen corresponding path program 1 times [2023-12-19 14:18:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554259211] [2023-12-19 14:18:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554259211] [2023-12-19 14:18:30,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:18:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057979648] [2023-12-19 14:18:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:30,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:30,150 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 14:18:30,181 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 14:18:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:30,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:18:30,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2023-12-19 14:18:30,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:30,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057979648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:30,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:30,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:18:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519076013] [2023-12-19 14:18:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:30,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:18:30,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:18:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:18:30,588 INFO L87 Difference]: Start difference. First operand has 279 states, 214 states have (on average 1.6308411214953271) internal successors, (349), 215 states have internal predecessors, (349), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2023-12-19 14:18:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:30,677 INFO L93 Difference]: Finished difference Result 552 states and 1001 transitions. [2023-12-19 14:18:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:18:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 433 [2023-12-19 14:18:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:30,686 INFO L225 Difference]: With dead ends: 552 [2023-12-19 14:18:30,686 INFO L226 Difference]: Without dead ends: 274 [2023-12-19 14:18:30,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 432 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 14:18:30,692 INFO L413 NwaCegarLoop]: 459 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, 459 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 14:18:30,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 459 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:18:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-19 14:18:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-12-19 14:18:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 210 states have (on average 1.6095238095238096) internal successors, (338), 210 states have internal predecessors, (338), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-19 14:18:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 462 transitions. [2023-12-19 14:18:30,756 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 462 transitions. Word has length 433 [2023-12-19 14:18:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:30,756 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 462 transitions. [2023-12-19 14:18:30,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2023-12-19 14:18:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 462 transitions. [2023-12-19 14:18:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 14:18:30,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:30,763 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:30,784 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 14:18:30,970 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 14:18:30,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:30,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1063671014, now seen corresponding path program 1 times [2023-12-19 14:18:30,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:30,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128568611] [2023-12-19 14:18:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:31,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012810846] [2023-12-19 14:18:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:31,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:31,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:31,054 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 14:18:31,070 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 14:18:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:31,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 14:18:31,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:31,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128568611] [2023-12-19 14:18:31,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012810846] [2023-12-19 14:18:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012810846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:18:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431422103] [2023-12-19 14:18:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:31,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:18:31,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:18:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:18:31,470 INFO L87 Difference]: Start difference. First operand 274 states and 462 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:31,809 INFO L93 Difference]: Finished difference Result 960 states and 1618 transitions. [2023-12-19 14:18:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:18:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 433 [2023-12-19 14:18:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:31,814 INFO L225 Difference]: With dead ends: 960 [2023-12-19 14:18:31,814 INFO L226 Difference]: Without dead ends: 687 [2023-12-19 14:18:31,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:18:31,815 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 647 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:31,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1565 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:18:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-19 14:18:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 682. [2023-12-19 14:18:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 548 states have (on average 1.5894160583941606) internal successors, (871), 549 states have internal predecessors, (871), 130 states have call successors, (130), 3 states have call predecessors, (130), 3 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-19 14:18:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1131 transitions. [2023-12-19 14:18:31,877 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1131 transitions. Word has length 433 [2023-12-19 14:18:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:31,880 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1131 transitions. [2023-12-19 14:18:31,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1131 transitions. [2023-12-19 14:18:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 14:18:31,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:31,886 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:31,892 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 14:18:32,092 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 14:18:32,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:32,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -522604902, now seen corresponding path program 1 times [2023-12-19 14:18:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300831421] [2023-12-19 14:18:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:32,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637610471] [2023-12-19 14:18:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:32,182 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 14:18:32,229 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 14:18:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:32,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:18:32,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:34,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300831421] [2023-12-19 14:18:34,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637610471] [2023-12-19 14:18:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637610471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:34,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:34,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 14:18:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320132696] [2023-12-19 14:18:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:34,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:18:34,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:18:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:18:34,635 INFO L87 Difference]: Start difference. First operand 682 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:35,090 INFO L93 Difference]: Finished difference Result 1568 states and 2603 transitions. [2023-12-19 14:18:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 14:18:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 433 [2023-12-19 14:18:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:35,096 INFO L225 Difference]: With dead ends: 1568 [2023-12-19 14:18:35,096 INFO L226 Difference]: Without dead ends: 887 [2023-12-19 14:18:35,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:18:35,100 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1129 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:35,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 3551 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:18:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-12-19 14:18:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 833. [2023-12-19 14:18:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 692 states have (on average 1.579479768786127) internal successors, (1093), 694 states have internal predecessors, (1093), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-19 14:18:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1365 transitions. [2023-12-19 14:18:35,159 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1365 transitions. Word has length 433 [2023-12-19 14:18:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:35,162 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1365 transitions. [2023-12-19 14:18:35,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1365 transitions. [2023-12-19 14:18:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 14:18:35,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:35,166 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:35,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 14:18:35,372 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 14:18:35,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:35,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1383279968, now seen corresponding path program 1 times [2023-12-19 14:18:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:35,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688074747] [2023-12-19 14:18:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:35,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:35,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:35,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505694870] [2023-12-19 14:18:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:35,437 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 14:18:35,459 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 14:18:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:35,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:18:35,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:35,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688074747] [2023-12-19 14:18:35,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505694870] [2023-12-19 14:18:35,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505694870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:35,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:35,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:18:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762604875] [2023-12-19 14:18:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:18:35,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:18:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:18:35,787 INFO L87 Difference]: Start difference. First operand 833 states and 1365 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:35,855 INFO L93 Difference]: Finished difference Result 2318 states and 3797 transitions. [2023-12-19 14:18:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:18:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 435 [2023-12-19 14:18:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:35,866 INFO L225 Difference]: With dead ends: 2318 [2023-12-19 14:18:35,866 INFO L226 Difference]: Without dead ends: 1486 [2023-12-19 14:18:35,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 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 14:18:35,871 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 296 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:35,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 933 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:18:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2023-12-19 14:18:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1482. [2023-12-19 14:18:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1305 states have (on average 1.5954022988505747) internal successors, (2082), 1311 states have internal predecessors, (2082), 168 states have call successors, (168), 8 states have call predecessors, (168), 8 states have return successors, (168), 162 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-19 14:18:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2418 transitions. [2023-12-19 14:18:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2418 transitions. Word has length 435 [2023-12-19 14:18:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:35,927 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2418 transitions. [2023-12-19 14:18:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2418 transitions. [2023-12-19 14:18:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 14:18:35,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:35,931 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:35,952 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 14:18:36,138 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 14:18:36,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:36,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash -507260962, now seen corresponding path program 1 times [2023-12-19 14:18:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699905259] [2023-12-19 14:18:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:36,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853632922] [2023-12-19 14:18:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:36,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:36,176 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 14:18:36,192 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 14:18:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:36,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:18:36,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:36,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:36,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699905259] [2023-12-19 14:18:36,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853632922] [2023-12-19 14:18:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853632922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:36,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:36,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:18:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893530642] [2023-12-19 14:18:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:36,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:18:36,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:18:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:18:36,506 INFO L87 Difference]: Start difference. First operand 1482 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:36,591 INFO L93 Difference]: Finished difference Result 3161 states and 5157 transitions. [2023-12-19 14:18:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:18:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 435 [2023-12-19 14:18:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:36,597 INFO L225 Difference]: With dead ends: 3161 [2023-12-19 14:18:36,597 INFO L226 Difference]: Without dead ends: 1680 [2023-12-19 14:18:36,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 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 14:18:36,599 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 408 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:36,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 846 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:18:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-19 14:18:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1564. [2023-12-19 14:18:36,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1323 states have (on average 1.5117157974300832) internal successors, (2000), 1330 states have internal predecessors, (2000), 230 states have call successors, (230), 10 states have call predecessors, (230), 10 states have return successors, (230), 223 states have call predecessors, (230), 230 states have call successors, (230) [2023-12-19 14:18:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2460 transitions. [2023-12-19 14:18:36,681 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2460 transitions. Word has length 435 [2023-12-19 14:18:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:36,681 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2460 transitions. [2023-12-19 14:18:36,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2460 transitions. [2023-12-19 14:18:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:18:36,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:36,685 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:36,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 14:18:36,891 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 14:18:36,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -214926572, now seen corresponding path program 1 times [2023-12-19 14:18:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555281143] [2023-12-19 14:18:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:36,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897537824] [2023-12-19 14:18:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:36,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:36,929 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 14:18:36,956 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 14:18:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:37,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:18:37,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 2437 proven. 147 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2023-12-19 14:18:37,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:18:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-19 14:18:38,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555281143] [2023-12-19 14:18:38,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897537824] [2023-12-19 14:18:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897537824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:18:38,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:18:38,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 14:18:38,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687289376] [2023-12-19 14:18:38,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:18:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 14:18:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 14:18:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-19 14:18:38,225 INFO L87 Difference]: Start difference. First operand 1564 states and 2460 transitions. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) [2023-12-19 14:18:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:39,498 INFO L93 Difference]: Finished difference Result 5457 states and 8586 transitions. [2023-12-19 14:18:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 14:18:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) Word has length 436 [2023-12-19 14:18:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:39,512 INFO L225 Difference]: With dead ends: 5457 [2023-12-19 14:18:39,512 INFO L226 Difference]: Without dead ends: 4000 [2023-12-19 14:18:39,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-12-19 14:18:39,517 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2707 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:39,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2768 Valid, 4282 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 14:18:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2023-12-19 14:18:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 2326. [2023-12-19 14:18:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 1995 states have (on average 1.5152882205513785) internal successors, (3023), 2004 states have internal predecessors, (3023), 314 states have call successors, (314), 16 states have call predecessors, (314), 16 states have return successors, (314), 305 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-19 14:18:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3651 transitions. [2023-12-19 14:18:39,649 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3651 transitions. Word has length 436 [2023-12-19 14:18:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:39,651 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 3651 transitions. [2023-12-19 14:18:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) [2023-12-19 14:18:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3651 transitions. [2023-12-19 14:18:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:18:39,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:39,654 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:39,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 14:18:39,862 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 14:18:39,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:39,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:39,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1932786235, now seen corresponding path program 1 times [2023-12-19 14:18:39,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:39,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84391447] [2023-12-19 14:18:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:39,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:39,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354293660] [2023-12-19 14:18:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:39,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:39,901 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 14:18:39,926 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 14:18:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:40,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 14:18:40,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:40,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84391447] [2023-12-19 14:18:40,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354293660] [2023-12-19 14:18:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354293660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:40,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:18:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626292909] [2023-12-19 14:18:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:40,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:18:40,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:18:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:18:40,566 INFO L87 Difference]: Start difference. First operand 2326 states and 3651 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:40,867 INFO L93 Difference]: Finished difference Result 5875 states and 9231 transitions. [2023-12-19 14:18:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:18:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 437 [2023-12-19 14:18:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:40,879 INFO L225 Difference]: With dead ends: 5875 [2023-12-19 14:18:40,879 INFO L226 Difference]: Without dead ends: 3663 [2023-12-19 14:18:40,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:18:40,884 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 352 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:40,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1606 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:18:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2023-12-19 14:18:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3505. [2023-12-19 14:18:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3174 states have (on average 1.5428481411468178) internal successors, (4897), 3183 states have internal predecessors, (4897), 314 states have call successors, (314), 16 states have call predecessors, (314), 16 states have return successors, (314), 305 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-19 14:18:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5525 transitions. [2023-12-19 14:18:41,016 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5525 transitions. Word has length 437 [2023-12-19 14:18:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:41,017 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 5525 transitions. [2023-12-19 14:18:41,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5525 transitions. [2023-12-19 14:18:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:18:41,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:41,020 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:41,045 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 14:18:41,228 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 14:18:41,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:41,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1269876800, now seen corresponding path program 1 times [2023-12-19 14:18:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:41,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840751361] [2023-12-19 14:18:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:41,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982124961] [2023-12-19 14:18:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:41,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:41,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:41,278 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 14:18:41,303 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 14:18:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:41,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:18:41,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:41,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840751361] [2023-12-19 14:18:41,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982124961] [2023-12-19 14:18:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982124961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:18:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727472815] [2023-12-19 14:18:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:18:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:18:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:18:41,916 INFO L87 Difference]: Start difference. First operand 3505 states and 5525 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:42,184 INFO L93 Difference]: Finished difference Result 6985 states and 10969 transitions. [2023-12-19 14:18:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:18:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 439 [2023-12-19 14:18:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:42,196 INFO L225 Difference]: With dead ends: 6985 [2023-12-19 14:18:42,196 INFO L226 Difference]: Without dead ends: 3635 [2023-12-19 14:18:42,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:18:42,203 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 557 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:42,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1749 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:18:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-12-19 14:18:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3513. [2023-12-19 14:18:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3182 states have (on average 1.5389692017598995) internal successors, (4897), 3191 states have internal predecessors, (4897), 314 states have call successors, (314), 16 states have call predecessors, (314), 16 states have return successors, (314), 305 states have call predecessors, (314), 314 states have call successors, (314) [2023-12-19 14:18:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5525 transitions. [2023-12-19 14:18:42,326 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5525 transitions. Word has length 439 [2023-12-19 14:18:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:42,326 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 5525 transitions. [2023-12-19 14:18:42,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5525 transitions. [2023-12-19 14:18:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:18:42,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:42,333 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:42,343 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 14:18:42,540 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 14:18:42,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:42,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash 195657038, now seen corresponding path program 1 times [2023-12-19 14:18:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:42,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570833030] [2023-12-19 14:18:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:42,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441578328] [2023-12-19 14:18:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:42,589 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 14:18:42,615 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 14:18:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:42,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:18:42,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 1951 proven. 156 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2023-12-19 14:18:43,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:18:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-19 14:18:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570833030] [2023-12-19 14:18:43,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441578328] [2023-12-19 14:18:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441578328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:18:43,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:18:43,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:18:43,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610728427] [2023-12-19 14:18:43,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:18:43,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:18:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:18:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:18:43,465 INFO L87 Difference]: Start difference. First operand 3513 states and 5525 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2023-12-19 14:18:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:43,817 INFO L93 Difference]: Finished difference Result 6693 states and 10519 transitions. [2023-12-19 14:18:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:18:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 439 [2023-12-19 14:18:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:43,828 INFO L225 Difference]: With dead ends: 6693 [2023-12-19 14:18:43,828 INFO L226 Difference]: Without dead ends: 3583 [2023-12-19 14:18:43,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 870 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:18:43,849 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 263 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:43,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 986 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:18:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2023-12-19 14:18:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3520. [2023-12-19 14:18:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3191 states have (on average 1.5249138201190848) internal successors, (4866), 3200 states have internal predecessors, (4866), 308 states have call successors, (308), 20 states have call predecessors, (308), 20 states have return successors, (308), 299 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 14:18:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5482 transitions. [2023-12-19 14:18:43,960 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5482 transitions. Word has length 439 [2023-12-19 14:18:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:43,961 INFO L495 AbstractCegarLoop]: Abstraction has 3520 states and 5482 transitions. [2023-12-19 14:18:43,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2023-12-19 14:18:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5482 transitions. [2023-12-19 14:18:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 14:18:43,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:43,964 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:43,982 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 14:18:44,172 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 14:18:44,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:44,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1232368290, now seen corresponding path program 1 times [2023-12-19 14:18:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:44,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666141739] [2023-12-19 14:18:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:44,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167406468] [2023-12-19 14:18:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:44,210 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 14:18:44,214 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 14:18:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:44,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:18:44,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:45,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666141739] [2023-12-19 14:18:45,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167406468] [2023-12-19 14:18:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167406468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:45,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:45,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 14:18:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833236971] [2023-12-19 14:18:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 14:18:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 14:18:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-19 14:18:45,114 INFO L87 Difference]: Start difference. First operand 3520 states and 5482 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:46,223 INFO L93 Difference]: Finished difference Result 6673 states and 10343 transitions. [2023-12-19 14:18:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 14:18:46,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 440 [2023-12-19 14:18:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:46,235 INFO L225 Difference]: With dead ends: 6673 [2023-12-19 14:18:46,235 INFO L226 Difference]: Without dead ends: 3712 [2023-12-19 14:18:46,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2023-12-19 14:18:46,240 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1993 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:46,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 4005 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 14:18:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2023-12-19 14:18:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3146. [2023-12-19 14:18:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 2817 states have (on average 1.5207667731629393) internal successors, (4284), 2826 states have internal predecessors, (4284), 308 states have call successors, (308), 20 states have call predecessors, (308), 20 states have return successors, (308), 299 states have call predecessors, (308), 308 states have call successors, (308) [2023-12-19 14:18:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4900 transitions. [2023-12-19 14:18:46,361 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4900 transitions. Word has length 440 [2023-12-19 14:18:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:46,362 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4900 transitions. [2023-12-19 14:18:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 9 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4900 transitions. [2023-12-19 14:18:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 14:18:46,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:46,365 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:46,380 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 14:18:46,573 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 14:18:46,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:46,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2135923102, now seen corresponding path program 1 times [2023-12-19 14:18:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:46,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098791519] [2023-12-19 14:18:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:46,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:46,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532125229] [2023-12-19 14:18:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:46,611 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 14:18:46,630 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 14:18:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:46,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:18:46,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 2283 proven. 150 refuted. 0 times theorem prover too weak. 5131 trivial. 0 not checked. [2023-12-19 14:18:47,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:18:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 33 proven. 150 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-19 14:18:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098791519] [2023-12-19 14:18:47,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532125229] [2023-12-19 14:18:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532125229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:18:47,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:18:47,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:18:47,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670154199] [2023-12-19 14:18:47,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:18:47,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:18:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:47,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:18:47,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:18:47,491 INFO L87 Difference]: Start difference. First operand 3146 states and 4900 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 14:18:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:47,804 INFO L93 Difference]: Finished difference Result 4758 states and 7387 transitions. [2023-12-19 14:18:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:18:47,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 440 [2023-12-19 14:18:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:47,811 INFO L225 Difference]: With dead ends: 4758 [2023-12-19 14:18:47,811 INFO L226 Difference]: Without dead ends: 2039 [2023-12-19 14:18:47,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 872 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:18:47,815 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 802 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 963 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:18:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-12-19 14:18:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1858. [2023-12-19 14:18:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1570 states have (on average 1.4834394904458599) internal successors, (2329), 1573 states have internal predecessors, (2329), 266 states have call successors, (266), 21 states have call predecessors, (266), 21 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2023-12-19 14:18:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2861 transitions. [2023-12-19 14:18:47,900 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2861 transitions. Word has length 440 [2023-12-19 14:18:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:47,902 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2861 transitions. [2023-12-19 14:18:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 14:18:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2861 transitions. [2023-12-19 14:18:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 14:18:47,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:47,905 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:47,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 14:18:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 14:18:48,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1203868000, now seen corresponding path program 1 times [2023-12-19 14:18:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145636837] [2023-12-19 14:18:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:48,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:48,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686204722] [2023-12-19 14:18:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:48,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:48,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:18:48,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 14:18:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:48,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:18:48,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-19 14:18:49,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:18:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:49,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145636837] [2023-12-19 14:18:49,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:49,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686204722] [2023-12-19 14:18:49,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686204722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:18:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:18:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:18:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506947846] [2023-12-19 14:18:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:18:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:18:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:18:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:18:49,317 INFO L87 Difference]: Start difference. First operand 1858 states and 2861 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:49,579 INFO L93 Difference]: Finished difference Result 3617 states and 5559 transitions. [2023-12-19 14:18:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:18:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 440 [2023-12-19 14:18:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:49,591 INFO L225 Difference]: With dead ends: 3617 [2023-12-19 14:18:49,592 INFO L226 Difference]: Without dead ends: 1900 [2023-12-19 14:18:49,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:18:49,595 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 330 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:49,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1264 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:18:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2023-12-19 14:18:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1858. [2023-12-19 14:18:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1570 states have (on average 1.481528662420382) internal successors, (2326), 1573 states have internal predecessors, (2326), 266 states have call successors, (266), 21 states have call predecessors, (266), 21 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2023-12-19 14:18:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2858 transitions. [2023-12-19 14:18:49,682 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2858 transitions. Word has length 440 [2023-12-19 14:18:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:49,682 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2858 transitions. [2023-12-19 14:18:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-19 14:18:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2858 transitions. [2023-12-19 14:18:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 14:18:49,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:49,685 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:49,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 14:18:49,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 14:18:49,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:49,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -754706786, now seen corresponding path program 1 times [2023-12-19 14:18:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955247309] [2023-12-19 14:18:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:49,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419599790] [2023-12-19 14:18:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:49,953 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:18:50,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 14:18:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:50,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 14:18:50,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3516 proven. 456 refuted. 0 times theorem prover too weak. 3592 trivial. 0 not checked. [2023-12-19 14:18:51,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:18:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 240 proven. 474 refuted. 0 times theorem prover too weak. 6850 trivial. 0 not checked. [2023-12-19 14:18:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955247309] [2023-12-19 14:18:52,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419599790] [2023-12-19 14:18:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419599790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:18:52,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:18:52,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-19 14:18:52,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452865450] [2023-12-19 14:18:52,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:18:52,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 14:18:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 14:18:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-12-19 14:18:52,704 INFO L87 Difference]: Start difference. First operand 1858 states and 2858 transitions. Second operand has 28 states, 26 states have (on average 8.846153846153847) internal successors, (230), 24 states have internal predecessors, (230), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) [2023-12-19 14:18:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:53,675 INFO L93 Difference]: Finished difference Result 3524 states and 5371 transitions. [2023-12-19 14:18:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 14:18:53,675 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 8.846153846153847) internal successors, (230), 24 states have internal predecessors, (230), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) Word has length 440 [2023-12-19 14:18:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:53,679 INFO L225 Difference]: With dead ends: 3524 [2023-12-19 14:18:53,679 INFO L226 Difference]: Without dead ends: 1960 [2023-12-19 14:18:53,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1519, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 14:18:53,682 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1633 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:53,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1092 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 14:18:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2023-12-19 14:18:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1922. [2023-12-19 14:18:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1618 states have (on average 1.4579728059332508) internal successors, (2359), 1621 states have internal predecessors, (2359), 266 states have call successors, (266), 37 states have call predecessors, (266), 37 states have return successors, (266), 263 states have call predecessors, (266), 266 states have call successors, (266) [2023-12-19 14:18:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2891 transitions. [2023-12-19 14:18:53,787 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2891 transitions. Word has length 440 [2023-12-19 14:18:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:53,787 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 2891 transitions. [2023-12-19 14:18:53,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 8.846153846153847) internal successors, (230), 24 states have internal predecessors, (230), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) [2023-12-19 14:18:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2891 transitions. [2023-12-19 14:18:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:18:53,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:53,789 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:53,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 14:18:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 14:18:53,997 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:53,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 591920892, now seen corresponding path program 1 times [2023-12-19 14:18:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632162549] [2023-12-19 14:18:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:54,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579447193] [2023-12-19 14:18:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:54,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:54,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:18:54,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 14:18:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:54,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 14:18:54,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:18:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3524 proven. 120 refuted. 0 times theorem prover too weak. 3920 trivial. 0 not checked. [2023-12-19 14:18:55,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:18:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 240 proven. 123 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-19 14:18:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:18:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632162549] [2023-12-19 14:18:56,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:18:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579447193] [2023-12-19 14:18:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579447193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:18:56,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:18:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 14:18:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052783107] [2023-12-19 14:18:56,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:18:56,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 14:18:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:18:56,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 14:18:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2023-12-19 14:18:56,264 INFO L87 Difference]: Start difference. First operand 1922 states and 2891 transitions. Second operand has 18 states, 17 states have (on average 14.823529411764707) internal successors, (252), 16 states have internal predecessors, (252), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-19 14:18:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:18:57,783 INFO L93 Difference]: Finished difference Result 6364 states and 9488 transitions. [2023-12-19 14:18:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-19 14:18:57,783 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 14.823529411764707) internal successors, (252), 16 states have internal predecessors, (252), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) Word has length 441 [2023-12-19 14:18:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:18:57,792 INFO L225 Difference]: With dead ends: 6364 [2023-12-19 14:18:57,792 INFO L226 Difference]: Without dead ends: 4832 [2023-12-19 14:18:57,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=484, Invalid=922, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 14:18:57,795 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1543 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:18:57,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 3612 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 14:18:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2023-12-19 14:18:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4751. [2023-12-19 14:18:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4034 states have (on average 1.4519087754090234) internal successors, (5857), 4046 states have internal predecessors, (5857), 608 states have call successors, (608), 108 states have call predecessors, (608), 108 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2023-12-19 14:18:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7073 transitions. [2023-12-19 14:18:58,066 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 7073 transitions. Word has length 441 [2023-12-19 14:18:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:18:58,067 INFO L495 AbstractCegarLoop]: Abstraction has 4751 states and 7073 transitions. [2023-12-19 14:18:58,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 14.823529411764707) internal successors, (252), 16 states have internal predecessors, (252), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-19 14:18:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 7073 transitions. [2023-12-19 14:18:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:18:58,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:18:58,070 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:58,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 14:18:58,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:58,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:18:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:18:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 866680506, now seen corresponding path program 1 times [2023-12-19 14:18:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:18:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070158503] [2023-12-19 14:18:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:18:58,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:18:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424989955] [2023-12-19 14:18:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:18:58,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:18:58,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:18:58,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:18:58,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 14:18:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:18:58,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 14:18:58,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:19:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 4293 proven. 333 refuted. 0 times theorem prover too weak. 2938 trivial. 0 not checked. [2023-12-19 14:19:01,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:19:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 120 proven. 243 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-19 14:19:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:19:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070158503] [2023-12-19 14:19:02,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:19:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424989955] [2023-12-19 14:19:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424989955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:19:02,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:19:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-19 14:19:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738292817] [2023-12-19 14:19:02,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:19:02,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 14:19:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:19:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 14:19:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2023-12-19 14:19:02,573 INFO L87 Difference]: Start difference. First operand 4751 states and 7073 transitions. Second operand has 21 states, 20 states have (on average 11.7) internal successors, (234), 19 states have internal predecessors, (234), 7 states have call successors, (104), 5 states have call predecessors, (104), 8 states have return successors, (104), 6 states have call predecessors, (104), 7 states have call successors, (104) [2023-12-19 14:19:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:19:05,420 INFO L93 Difference]: Finished difference Result 17857 states and 26774 transitions. [2023-12-19 14:19:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 14:19:05,421 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 11.7) internal successors, (234), 19 states have internal predecessors, (234), 7 states have call successors, (104), 5 states have call predecessors, (104), 8 states have return successors, (104), 6 states have call predecessors, (104), 7 states have call successors, (104) Word has length 441 [2023-12-19 14:19:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:19:05,443 INFO L225 Difference]: With dead ends: 17857 [2023-12-19 14:19:05,443 INFO L226 Difference]: Without dead ends: 13512 [2023-12-19 14:19:05,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 853 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=1226, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 14:19:05,453 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 2030 mSDsluCounter, 4531 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:19:05,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 5273 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 14:19:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2023-12-19 14:19:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 7995. [2023-12-19 14:19:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7995 states, 7268 states have (on average 1.5158227848101267) internal successors, (11017), 7280 states have internal predecessors, (11017), 608 states have call successors, (608), 118 states have call predecessors, (608), 118 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2023-12-19 14:19:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7995 states to 7995 states and 12233 transitions. [2023-12-19 14:19:05,944 INFO L78 Accepts]: Start accepts. Automaton has 7995 states and 12233 transitions. Word has length 441 [2023-12-19 14:19:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:19:05,944 INFO L495 AbstractCegarLoop]: Abstraction has 7995 states and 12233 transitions. [2023-12-19 14:19:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 11.7) internal successors, (234), 19 states have internal predecessors, (234), 7 states have call successors, (104), 5 states have call predecessors, (104), 8 states have return successors, (104), 6 states have call predecessors, (104), 7 states have call successors, (104) [2023-12-19 14:19:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7995 states and 12233 transitions. [2023-12-19 14:19:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:19:05,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:19:05,948 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:05,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 14:19:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 14:19:06,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:19:06,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:19:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 385600248, now seen corresponding path program 1 times [2023-12-19 14:19:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:19:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470620717] [2023-12-19 14:19:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:19:06,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:19:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401344660] [2023-12-19 14:19:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:06,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:19:06,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:19:06,192 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:19:06,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 14:19:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:19:06,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:19:06,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:19:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3160 proven. 96 refuted. 0 times theorem prover too weak. 4308 trivial. 0 not checked. [2023-12-19 14:19:07,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:19:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 48 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-19 14:19:07,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:19:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470620717] [2023-12-19 14:19:07,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:19:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401344660] [2023-12-19 14:19:07,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401344660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:19:07,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:19:07,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-12-19 14:19:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108406501] [2023-12-19 14:19:07,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:19:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 14:19:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:19:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 14:19:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-19 14:19:07,278 INFO L87 Difference]: Start difference. First operand 7995 states and 12233 transitions. Second operand has 13 states, 13 states have (on average 13.923076923076923) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2023-12-19 14:19:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:19:07,975 INFO L93 Difference]: Finished difference Result 15111 states and 23025 transitions. [2023-12-19 14:19:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 14:19:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.923076923076923) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 441 [2023-12-19 14:19:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:19:08,012 INFO L225 Difference]: With dead ends: 15111 [2023-12-19 14:19:08,013 INFO L226 Difference]: Without dead ends: 8149 [2023-12-19 14:19:08,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:19:08,022 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1037 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:19:08,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1693 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:19:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2023-12-19 14:19:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 8051. [2023-12-19 14:19:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8051 states, 7310 states have (on average 1.5108071135430916) internal successors, (11044), 7322 states have internal predecessors, (11044), 608 states have call successors, (608), 132 states have call predecessors, (608), 132 states have return successors, (608), 596 states have call predecessors, (608), 608 states have call successors, (608) [2023-12-19 14:19:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8051 states to 8051 states and 12260 transitions. [2023-12-19 14:19:08,396 INFO L78 Accepts]: Start accepts. Automaton has 8051 states and 12260 transitions. Word has length 441 [2023-12-19 14:19:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:19:08,396 INFO L495 AbstractCegarLoop]: Abstraction has 8051 states and 12260 transitions. [2023-12-19 14:19:08,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.923076923076923) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (79), 3 states have call predecessors, (79), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2023-12-19 14:19:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8051 states and 12260 transitions. [2023-12-19 14:19:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-19 14:19:08,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:19:08,400 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:08,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 14:19:08,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 14:19:08,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:19:08,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:19:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash 587346473, now seen corresponding path program 1 times [2023-12-19 14:19:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:19:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492090129] [2023-12-19 14:19:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:19:08,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:19:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841335764] [2023-12-19 14:19:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:08,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:19:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:19:08,642 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:19:08,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 14:19:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:19:09,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:19:09,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:19:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 4130 proven. 216 refuted. 0 times theorem prover too weak. 3218 trivial. 0 not checked. [2023-12-19 14:19:09,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:19:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 144 proven. 219 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-19 14:19:09,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:19:09,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492090129] [2023-12-19 14:19:09,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:19:09,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841335764] [2023-12-19 14:19:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841335764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:19:09,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:19:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 14:19:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415129059] [2023-12-19 14:19:09,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:19:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 14:19:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:19:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 14:19:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-19 14:19:09,872 INFO L87 Difference]: Start difference. First operand 8051 states and 12260 transitions. Second operand has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-12-19 14:19:10,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:19:10,676 INFO L93 Difference]: Finished difference Result 10673 states and 16110 transitions. [2023-12-19 14:19:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 14:19:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) Word has length 442 [2023-12-19 14:19:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:19:10,702 INFO L225 Difference]: With dead ends: 10673 [2023-12-19 14:19:10,702 INFO L226 Difference]: Without dead ends: 3663 [2023-12-19 14:19:10,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 869 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-12-19 14:19:10,708 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 972 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:19:10,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1451 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:19:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2023-12-19 14:19:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3585. [2023-12-19 14:19:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3101 states have (on average 1.471460819090616) internal successors, (4563), 3108 states have internal predecessors, (4563), 392 states have call successors, (392), 91 states have call predecessors, (392), 91 states have return successors, (392), 385 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-19 14:19:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 5347 transitions. [2023-12-19 14:19:10,915 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 5347 transitions. Word has length 442 [2023-12-19 14:19:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:19:10,916 INFO L495 AbstractCegarLoop]: Abstraction has 3585 states and 5347 transitions. [2023-12-19 14:19:10,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-12-19 14:19:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 5347 transitions. [2023-12-19 14:19:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-19 14:19:10,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:19:10,919 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:10,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 14:19:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 14:19:11,128 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:19:11,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:19:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1079972647, now seen corresponding path program 1 times [2023-12-19 14:19:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:19:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072362092] [2023-12-19 14:19:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:19:11,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:19:11,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394589138] [2023-12-19 14:19:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:19:11,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:19:11,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:19:11,163 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:19:11,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 14:32:59,793 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:32:59,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:33:00,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 14:33:00,994 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forcibly destroying the process [2023-12-19 14:33:01,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 137 [2023-12-19 14:33:01,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 14:33:01,009 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 14:33:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 14:33:01,009 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 443 with TraceHistMax 62,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 14:33:01,012 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 14:33:01,014 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 14:33:01,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 02:33:01 BoogieIcfgContainer [2023-12-19 14:33:01,015 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 14:33:01,015 INFO L158 Benchmark]: Toolchain (without parser) took 873129.36ms. Allocated memory was 239.1MB in the beginning and 1.0GB in the end (delta: 779.1MB). Free memory was 181.7MB in the beginning and 524.4MB in the end (delta: -342.7MB). Peak memory consumption was 437.4MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,015 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 14:33:01,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.03ms. Allocated memory is still 239.1MB. Free memory was 181.7MB in the beginning and 142.8MB in the end (delta: 38.9MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 164.12ms. Allocated memory is still 239.1MB. Free memory was 142.8MB in the beginning and 184.2MB in the end (delta: -41.5MB). Peak memory consumption was 24.2MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,021 INFO L158 Benchmark]: Boogie Preprocessor took 139.04ms. Allocated memory is still 239.1MB. Free memory was 184.2MB in the beginning and 130.0MB in the end (delta: 54.3MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,021 INFO L158 Benchmark]: RCFGBuilder took 1004.80ms. Allocated memory was 239.1MB in the beginning and 364.9MB in the end (delta: 125.8MB). Free memory was 130.0MB in the beginning and 289.2MB in the end (delta: -159.2MB). Peak memory consumption was 35.6MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,022 INFO L158 Benchmark]: TraceAbstraction took 871294.42ms. Allocated memory was 364.9MB in the beginning and 1.0GB in the end (delta: 653.3MB). Free memory was 288.7MB in the beginning and 524.4MB in the end (delta: -235.8MB). Peak memory consumption was 417.5MB. Max. memory is 8.0GB. [2023-12-19 14:33:01,023 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 522.03ms. Allocated memory is still 239.1MB. Free memory was 181.7MB in the beginning and 142.8MB in the end (delta: 38.9MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 164.12ms. Allocated memory is still 239.1MB. Free memory was 142.8MB in the beginning and 184.2MB in the end (delta: -41.5MB). Peak memory consumption was 24.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 139.04ms. Allocated memory is still 239.1MB. Free memory was 184.2MB in the beginning and 130.0MB in the end (delta: 54.3MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1004.80ms. Allocated memory was 239.1MB in the beginning and 364.9MB in the end (delta: 125.8MB). Free memory was 130.0MB in the beginning and 289.2MB in the end (delta: -159.2MB). Peak memory consumption was 35.6MB. Max. memory is 8.0GB. * TraceAbstraction took 871294.42ms. Allocated memory was 364.9MB in the beginning and 1.0GB in the end (delta: 653.3MB). Free memory was 288.7MB in the beginning and 524.4MB in the end (delta: -235.8MB). Peak memory consumption was 417.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 443 with TraceHistMax 62,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 279 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.2s, OverallIterations: 18, TraceHistogramMax: 62, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16904 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16699 mSDsluCounter, 35330 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26875 mSDsCounter, 2320 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11000 IncrementalHoareTripleChecker+Invalid, 13320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2320 mSolverCounterUnsat, 8455 mSDtfsCounter, 11000 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11072 GetRequests, 10810 SyntacticMatches, 13 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8051occurred in iteration=16, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 17 MinimizatonAttempts, 8797 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 7878 NumberOfCodeBlocks, 7878 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10940 ConstructedInterpolants, 0 QuantifiedInterpolants, 41570 SizeOfPredicates, 81 NumberOfNonLiveVariables, 18588 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 25 InterpolantComputations, 9 PerfectInterpolantSequences, 185866/189100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown