/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-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:07:15,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:07:15,669 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 14:07:15,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:07:15,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:07:15,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:07:15,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:07:15,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:07:15,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:07:15,705 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:07:15,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:07:15,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:07:15,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:07:15,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:07:15,707 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:07:15,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:07:15,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:07:15,708 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:07:15,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:07:15,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:07:15,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:07:15,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:07:15,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:07:15,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:07:15,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:07:15,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:07:15,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:07:15,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:07:15,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:07:15,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:07:15,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:07:15,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:07:15,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:07:15,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:07:15,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:07:15,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:07:15,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:07:15,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:07:15,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:07:15,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:07:15,884 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:07:15,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i [2023-12-19 14:07:16,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:07:17,186 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:07:17,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-61.i [2023-12-19 14:07:17,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603f91449/721d292ff6b54f47b3d82077dbd4c862/FLAG04fd1caa8 [2023-12-19 14:07:17,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603f91449/721d292ff6b54f47b3d82077dbd4c862 [2023-12-19 14:07:17,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:07:17,206 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:07:17,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:07:17,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:07:17,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:07:17,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:17,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1101f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17, skipping insertion in model container [2023-12-19 14:07:17,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:17,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:07:17,366 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-61.i[916,929] [2023-12-19 14:07:17,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:07:17,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:07:17,683 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-61.i[916,929] [2023-12-19 14:07:17,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:07:17,874 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:07:17,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17 WrapperNode [2023-12-19 14:07:17,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:07:17,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:07:17,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:07:17,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:07:17,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:17,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:17,988 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 714 [2023-12-19 14:07:17,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:07:17,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:07:17,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:07:17,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:07:17,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:17,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,072 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 14:07:18,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:07:18,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:07:18,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:07:18,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:07:18,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (1/1) ... [2023-12-19 14:07:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:07:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:18,186 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 14:07:18,214 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 14:07:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:07:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:07:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:07:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:07:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:07:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:07:18,332 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:07:18,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:07:19,023 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:07:19,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:07:19,046 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:07:19,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:07:19 BoogieIcfgContainer [2023-12-19 14:07:19,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:07:19,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:07:19,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:07:19,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:07:19,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:07:17" (1/3) ... [2023-12-19 14:07:19,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f8abaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:07:19, skipping insertion in model container [2023-12-19 14:07:19,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:07:17" (2/3) ... [2023-12-19 14:07:19,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f8abaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:07:19, skipping insertion in model container [2023-12-19 14:07:19,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:07:19" (3/3) ... [2023-12-19 14:07:19,052 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-61.i [2023-12-19 14:07:19,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:07:19,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:07:19,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:07:19,104 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;@54f98cef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:07:19,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:07:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 204 states have (on average 1.6029411764705883) internal successors, (327), 205 states have internal predecessors, (327), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 14:07:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 14:07:19,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:19,130 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:19,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:19,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 421251278, now seen corresponding path program 1 times [2023-12-19 14:07:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946554062] [2023-12-19 14:07:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946554062] [2023-12-19 14:07:19,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:07:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412674045] [2023-12-19 14:07:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:19,460 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 14:07:19,510 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 14:07:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:19,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:07:19,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-12-19 14:07:19,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:19,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412674045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:19,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:19,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:07:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860047771] [2023-12-19 14:07:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:07:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:07:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:07:19,918 INFO L87 Difference]: Start difference. First operand has 273 states, 204 states have (on average 1.6029411764705883) internal successors, (327), 205 states have internal predecessors, (327), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-19 14:07:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:19,965 INFO L93 Difference]: Finished difference Result 543 states and 982 transitions. [2023-12-19 14:07:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:07:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 455 [2023-12-19 14:07:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:19,978 INFO L225 Difference]: With dead ends: 543 [2023-12-19 14:07:19,978 INFO L226 Difference]: Without dead ends: 271 [2023-12-19 14:07:19,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 454 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 14:07:19,987 INFO L413 NwaCegarLoop]: 451 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, 451 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 14:07:19,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:07:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-19 14:07:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-12-19 14:07:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 203 states have (on average 1.5862068965517242) internal successors, (322), 203 states have internal predecessors, (322), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 14:07:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 454 transitions. [2023-12-19 14:07:20,049 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 454 transitions. Word has length 455 [2023-12-19 14:07:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:20,049 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 454 transitions. [2023-12-19 14:07:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-19 14:07:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 454 transitions. [2023-12-19 14:07:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 14:07:20,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:20,058 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:20,079 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 14:07:20,259 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 14:07:20,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1578404406, now seen corresponding path program 1 times [2023-12-19 14:07:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256014667] [2023-12-19 14:07:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:20,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:20,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681688156] [2023-12-19 14:07:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:20,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:20,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:20,446 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 14:07:20,468 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 14:07:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:20,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:07:20,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:21,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256014667] [2023-12-19 14:07:21,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:21,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681688156] [2023-12-19 14:07:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681688156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:21,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:07:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678988792] [2023-12-19 14:07:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:21,161 INFO L87 Difference]: Start difference. First operand 271 states and 454 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:21,232 INFO L93 Difference]: Finished difference Result 811 states and 1360 transitions. [2023-12-19 14:07:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 455 [2023-12-19 14:07:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:21,253 INFO L225 Difference]: With dead ends: 811 [2023-12-19 14:07:21,253 INFO L226 Difference]: Without dead ends: 541 [2023-12-19 14:07:21,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 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 14:07:21,255 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 234 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:21,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 887 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:07:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-19 14:07:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-12-19 14:07:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 404 states have (on average 1.5866336633663367) internal successors, (641), 404 states have internal predecessors, (641), 132 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-19 14:07:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 905 transitions. [2023-12-19 14:07:21,305 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 905 transitions. Word has length 455 [2023-12-19 14:07:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:21,306 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 905 transitions. [2023-12-19 14:07:21,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 905 transitions. [2023-12-19 14:07:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:21,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:21,310 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:21,331 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 14:07:21,516 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 14:07:21,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:21,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1395593982, now seen corresponding path program 1 times [2023-12-19 14:07:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915682466] [2023-12-19 14:07:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:21,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945889835] [2023-12-19 14:07:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:21,617 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 14:07:21,639 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 14:07:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:21,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:07:21,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:21,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:21,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915682466] [2023-12-19 14:07:21,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945889835] [2023-12-19 14:07:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945889835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:21,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:07:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190075451] [2023-12-19 14:07:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:21,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:21,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:21,983 INFO L87 Difference]: Start difference. First operand 539 states and 905 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:22,119 INFO L93 Difference]: Finished difference Result 1595 states and 2677 transitions. [2023-12-19 14:07:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:22,136 INFO L225 Difference]: With dead ends: 1595 [2023-12-19 14:07:22,136 INFO L226 Difference]: Without dead ends: 1057 [2023-12-19 14:07:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 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 14:07:22,138 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 445 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 867 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:07:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-12-19 14:07:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 747. [2023-12-19 14:07:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 612 states have (on average 1.6437908496732025) internal successors, (1006), 612 states have internal predecessors, (1006), 132 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-19 14:07:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1270 transitions. [2023-12-19 14:07:22,193 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1270 transitions. Word has length 456 [2023-12-19 14:07:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:22,194 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1270 transitions. [2023-12-19 14:07:22,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1270 transitions. [2023-12-19 14:07:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:22,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:22,197 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:22,222 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 14:07:22,397 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 14:07:22,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:22,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1812990588, now seen corresponding path program 1 times [2023-12-19 14:07:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085544942] [2023-12-19 14:07:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:22,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054211500] [2023-12-19 14:07:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:22,449 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 14:07:22,451 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 14:07:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:22,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:07:22,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:22,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085544942] [2023-12-19 14:07:22,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054211500] [2023-12-19 14:07:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054211500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:07:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383657030] [2023-12-19 14:07:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:22,776 INFO L87 Difference]: Start difference. First operand 747 states and 1270 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:23,436 INFO L93 Difference]: Finished difference Result 2081 states and 3536 transitions. [2023-12-19 14:07:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:23,442 INFO L225 Difference]: With dead ends: 2081 [2023-12-19 14:07:23,442 INFO L226 Difference]: Without dead ends: 1335 [2023-12-19 14:07:23,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 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 14:07:23,444 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 312 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:23,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1009 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 14:07:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2023-12-19 14:07:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1331. [2023-12-19 14:07:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1104 states have (on average 1.644927536231884) internal successors, (1816), 1106 states have internal predecessors, (1816), 222 states have call successors, (222), 4 states have call predecessors, (222), 4 states have return successors, (222), 220 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-19 14:07:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2260 transitions. [2023-12-19 14:07:23,494 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2260 transitions. Word has length 456 [2023-12-19 14:07:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:23,495 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 2260 transitions. [2023-12-19 14:07:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2260 transitions. [2023-12-19 14:07:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:23,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:23,498 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:23,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 14:07:23,705 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 14:07:23,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:23,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1110169410, now seen corresponding path program 1 times [2023-12-19 14:07:23,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:23,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557622843] [2023-12-19 14:07:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:23,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469336048] [2023-12-19 14:07:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:23,745 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 14:07:23,760 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 14:07:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:24,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:07:24,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:24,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557622843] [2023-12-19 14:07:24,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469336048] [2023-12-19 14:07:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469336048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:07:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641735402] [2023-12-19 14:07:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:24,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:24,098 INFO L87 Difference]: Start difference. First operand 1331 states and 2260 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:24,196 INFO L93 Difference]: Finished difference Result 3991 states and 6778 transitions. [2023-12-19 14:07:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:24,207 INFO L225 Difference]: With dead ends: 3991 [2023-12-19 14:07:24,207 INFO L226 Difference]: Without dead ends: 2661 [2023-12-19 14:07:24,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 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 14:07:24,210 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 443 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1133 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:07:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2023-12-19 14:07:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1827. [2023-12-19 14:07:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1600 states have (on average 1.6675) internal successors, (2668), 1602 states have internal predecessors, (2668), 222 states have call successors, (222), 4 states have call predecessors, (222), 4 states have return successors, (222), 220 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-19 14:07:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 3112 transitions. [2023-12-19 14:07:24,311 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 3112 transitions. Word has length 456 [2023-12-19 14:07:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:24,312 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 3112 transitions. [2023-12-19 14:07:24,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 3112 transitions. [2023-12-19 14:07:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:24,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:24,316 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:24,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 14:07:24,547 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 14:07:24,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:24,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -856377086, now seen corresponding path program 1 times [2023-12-19 14:07:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:24,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102606550] [2023-12-19 14:07:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:24,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:24,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290815421] [2023-12-19 14:07:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:24,612 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 14:07:24,628 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 14:07:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:24,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:07:24,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:24,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102606550] [2023-12-19 14:07:24,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290815421] [2023-12-19 14:07:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290815421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:24,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:07:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898953465] [2023-12-19 14:07:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:07:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:07:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:07:24,960 INFO L87 Difference]: Start difference. First operand 1827 states and 3112 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:25,202 INFO L93 Difference]: Finished difference Result 8259 states and 14036 transitions. [2023-12-19 14:07:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:07:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:25,224 INFO L225 Difference]: With dead ends: 8259 [2023-12-19 14:07:25,224 INFO L226 Difference]: Without dead ends: 6433 [2023-12-19 14:07:25,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 454 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 14:07:25,229 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1069 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:25,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 2040 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:07:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2023-12-19 14:07:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 3331. [2023-12-19 14:07:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3331 states, 3020 states have (on average 1.6655629139072847) internal successors, (5030), 3026 states have internal predecessors, (5030), 302 states have call successors, (302), 8 states have call predecessors, (302), 8 states have return successors, (302), 296 states have call predecessors, (302), 302 states have call successors, (302) [2023-12-19 14:07:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 5634 transitions. [2023-12-19 14:07:25,422 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 5634 transitions. Word has length 456 [2023-12-19 14:07:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:25,423 INFO L495 AbstractCegarLoop]: Abstraction has 3331 states and 5634 transitions. [2023-12-19 14:07:25,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 5634 transitions. [2023-12-19 14:07:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:25,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:25,427 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:25,436 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 14:07:25,634 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 14:07:25,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:25,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -12371584, now seen corresponding path program 1 times [2023-12-19 14:07:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820178785] [2023-12-19 14:07:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:25,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135470650] [2023-12-19 14:07:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:25,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:25,678 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 14:07:25,707 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 14:07:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:25,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 14:07:25,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:25,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820178785] [2023-12-19 14:07:26,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135470650] [2023-12-19 14:07:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135470650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:07:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582792096] [2023-12-19 14:07:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:07:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:07:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:07:26,002 INFO L87 Difference]: Start difference. First operand 3331 states and 5634 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:26,550 INFO L93 Difference]: Finished difference Result 12697 states and 21461 transitions. [2023-12-19 14:07:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:07:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:26,578 INFO L225 Difference]: With dead ends: 12697 [2023-12-19 14:07:26,578 INFO L226 Difference]: Without dead ends: 9367 [2023-12-19 14:07:26,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:07:26,586 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 920 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:26,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 3523 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:07:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2023-12-19 14:07:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 3731. [2023-12-19 14:07:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3420 states have (on average 1.667251461988304) internal successors, (5702), 3426 states have internal predecessors, (5702), 302 states have call successors, (302), 8 states have call predecessors, (302), 8 states have return successors, (302), 296 states have call predecessors, (302), 302 states have call successors, (302) [2023-12-19 14:07:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 6306 transitions. [2023-12-19 14:07:26,805 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 6306 transitions. Word has length 456 [2023-12-19 14:07:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 3731 states and 6306 transitions. [2023-12-19 14:07:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 6306 transitions. [2023-12-19 14:07:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:26,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:26,811 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:26,820 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 14:07:27,018 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 14:07:27,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:27,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -84758142, now seen corresponding path program 1 times [2023-12-19 14:07:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352147046] [2023-12-19 14:07:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:27,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092707179] [2023-12-19 14:07:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:27,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:27,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:27,054 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 14:07:27,080 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 14:07:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:27,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:07:27,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4355 proven. 96 refuted. 0 times theorem prover too weak. 4129 trivial. 0 not checked. [2023-12-19 14:07:27,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:07:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 99 proven. 96 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:07:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352147046] [2023-12-19 14:07:27,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092707179] [2023-12-19 14:07:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092707179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:07:27,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:07:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:07:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980384047] [2023-12-19 14:07:27,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:07:27,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:07:27,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:07:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:07:27,920 INFO L87 Difference]: Start difference. First operand 3731 states and 6306 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 14:07:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:28,443 INFO L93 Difference]: Finished difference Result 7552 states and 12730 transitions. [2023-12-19 14:07:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:07:28,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 456 [2023-12-19 14:07:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:28,466 INFO L225 Difference]: With dead ends: 7552 [2023-12-19 14:07:28,466 INFO L226 Difference]: Without dead ends: 3822 [2023-12-19 14:07:28,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:07:28,473 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 484 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:28,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1104 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:07:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2023-12-19 14:07:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3803. [2023-12-19 14:07:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3454 states have (on average 1.6514186450492183) internal successors, (5704), 3461 states have internal predecessors, (5704), 335 states have call successors, (335), 13 states have call predecessors, (335), 13 states have return successors, (335), 328 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 14:07:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6374 transitions. [2023-12-19 14:07:28,656 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6374 transitions. Word has length 456 [2023-12-19 14:07:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:28,657 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6374 transitions. [2023-12-19 14:07:28,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 14:07:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6374 transitions. [2023-12-19 14:07:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:28,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:28,662 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:28,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 14:07:28,869 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 14:07:28,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:28,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1372197785, now seen corresponding path program 1 times [2023-12-19 14:07:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093156550] [2023-12-19 14:07:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:28,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097779548] [2023-12-19 14:07:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:28,906 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 14:07:28,934 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 14:07:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:29,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:07:29,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 3755 proven. 60 refuted. 0 times theorem prover too weak. 4765 trivial. 0 not checked. [2023-12-19 14:07:29,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:07:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 135 proven. 60 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:07:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:29,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093156550] [2023-12-19 14:07:29,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:29,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097779548] [2023-12-19 14:07:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097779548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:07:29,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:07:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:07:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189575328] [2023-12-19 14:07:29,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:07:29,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:07:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:07:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:07:29,557 INFO L87 Difference]: Start difference. First operand 3803 states and 6374 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-19 14:07:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:29,882 INFO L93 Difference]: Finished difference Result 5845 states and 9797 transitions. [2023-12-19 14:07:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:07:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 456 [2023-12-19 14:07:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:29,888 INFO L225 Difference]: With dead ends: 5845 [2023-12-19 14:07:29,888 INFO L226 Difference]: Without dead ends: 2099 [2023-12-19 14:07:29,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 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 14:07:29,894 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 602 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:29,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 989 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:07:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2023-12-19 14:07:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2089. [2023-12-19 14:07:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1874 states have (on average 1.632870864461046) internal successors, (3060), 1877 states have internal predecessors, (3060), 205 states have call successors, (205), 9 states have call predecessors, (205), 9 states have return successors, (205), 202 states have call predecessors, (205), 205 states have call successors, (205) [2023-12-19 14:07:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3470 transitions. [2023-12-19 14:07:29,968 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3470 transitions. Word has length 456 [2023-12-19 14:07:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:29,968 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 3470 transitions. [2023-12-19 14:07:29,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-19 14:07:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3470 transitions. [2023-12-19 14:07:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:29,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:29,973 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:29,998 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 14:07:30,183 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 14:07:30,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:30,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2111661991, now seen corresponding path program 1 times [2023-12-19 14:07:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510796421] [2023-12-19 14:07:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:30,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340591298] [2023-12-19 14:07:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:30,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:30,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:30,258 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 14:07:30,276 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 14:07:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:30,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:07:30,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:30,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510796421] [2023-12-19 14:07:30,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340591298] [2023-12-19 14:07:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340591298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:07:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981438222] [2023-12-19 14:07:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:30,946 INFO L87 Difference]: Start difference. First operand 2089 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:31,078 INFO L93 Difference]: Finished difference Result 6153 states and 10232 transitions. [2023-12-19 14:07:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:31,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:31,087 INFO L225 Difference]: With dead ends: 6153 [2023-12-19 14:07:31,087 INFO L226 Difference]: Without dead ends: 4121 [2023-12-19 14:07:31,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 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 14:07:31,092 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 261 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:31,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 876 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:07:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2023-12-19 14:07:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4119. [2023-12-19 14:07:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4119 states, 3724 states have (on average 1.6337271750805586) internal successors, (6084), 3729 states have internal predecessors, (6084), 377 states have call successors, (377), 17 states have call predecessors, (377), 17 states have return successors, (377), 372 states have call predecessors, (377), 377 states have call successors, (377) [2023-12-19 14:07:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4119 states to 4119 states and 6838 transitions. [2023-12-19 14:07:31,254 INFO L78 Accepts]: Start accepts. Automaton has 4119 states and 6838 transitions. Word has length 456 [2023-12-19 14:07:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:31,255 INFO L495 AbstractCegarLoop]: Abstraction has 4119 states and 6838 transitions. [2023-12-19 14:07:31,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4119 states and 6838 transitions. [2023-12-19 14:07:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:31,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:31,262 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:31,281 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 14:07:31,468 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 14:07:31,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:31,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 105968407, now seen corresponding path program 1 times [2023-12-19 14:07:31,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:31,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702394257] [2023-12-19 14:07:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:31,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:31,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:31,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181015299] [2023-12-19 14:07:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:31,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:31,507 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 14:07:31,520 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 14:07:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:31,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 14:07:31,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:32,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702394257] [2023-12-19 14:07:32,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181015299] [2023-12-19 14:07:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181015299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:32,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:07:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450500365] [2023-12-19 14:07:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:07:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:07:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:07:32,221 INFO L87 Difference]: Start difference. First operand 4119 states and 6838 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:32,727 INFO L93 Difference]: Finished difference Result 10531 states and 17400 transitions. [2023-12-19 14:07:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:07:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:32,738 INFO L225 Difference]: With dead ends: 10531 [2023-12-19 14:07:32,738 INFO L226 Difference]: Without dead ends: 6469 [2023-12-19 14:07:32,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 14:07:32,745 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2400 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:32,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 1704 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:07:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2023-12-19 14:07:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6143. [2023-12-19 14:07:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 5468 states have (on average 1.6108266276517922) internal successors, (8808), 5477 states have internal predecessors, (8808), 641 states have call successors, (641), 33 states have call predecessors, (641), 33 states have return successors, (641), 632 states have call predecessors, (641), 641 states have call successors, (641) [2023-12-19 14:07:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 10090 transitions. [2023-12-19 14:07:32,955 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 10090 transitions. Word has length 456 [2023-12-19 14:07:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:32,955 INFO L495 AbstractCegarLoop]: Abstraction has 6143 states and 10090 transitions. [2023-12-19 14:07:32,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 10090 transitions. [2023-12-19 14:07:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:32,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:32,964 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:32,970 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 14:07:33,170 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 14:07:33,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:33,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2021113361, now seen corresponding path program 1 times [2023-12-19 14:07:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990566893] [2023-12-19 14:07:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:33,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833630170] [2023-12-19 14:07:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:33,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:33,214 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 14:07:33,241 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 14:07:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:33,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 14:07:33,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:07:33,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:07:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990566893] [2023-12-19 14:07:33,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833630170] [2023-12-19 14:07:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833630170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:07:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:07:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:07:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048892287] [2023-12-19 14:07:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:07:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:07:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:07:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:07:33,522 INFO L87 Difference]: Start difference. First operand 6143 states and 10090 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:37,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:07:41,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:07:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:41,813 INFO L93 Difference]: Finished difference Result 17491 states and 28808 transitions. [2023-12-19 14:07:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:07:41,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 456 [2023-12-19 14:07:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:41,837 INFO L225 Difference]: With dead ends: 17491 [2023-12-19 14:07:41,838 INFO L226 Difference]: Without dead ends: 11405 [2023-12-19 14:07:41,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 454 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 14:07:41,848 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 272 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:41,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 874 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 14:07:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11405 states. [2023-12-19 14:07:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11405 to 11391. [2023-12-19 14:07:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11391 states, 10488 states have (on average 1.6117467581998475) internal successors, (16904), 10509 states have internal predecessors, (16904), 857 states have call successors, (857), 45 states have call predecessors, (857), 45 states have return successors, (857), 836 states have call predecessors, (857), 857 states have call successors, (857) [2023-12-19 14:07:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11391 states to 11391 states and 18618 transitions. [2023-12-19 14:07:42,185 INFO L78 Accepts]: Start accepts. Automaton has 11391 states and 18618 transitions. Word has length 456 [2023-12-19 14:07:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:42,186 INFO L495 AbstractCegarLoop]: Abstraction has 11391 states and 18618 transitions. [2023-12-19 14:07:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:07:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 11391 states and 18618 transitions. [2023-12-19 14:07:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 14:07:42,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:42,199 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:42,206 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 14:07:42,406 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 14:07:42,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:42,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash 334933523, now seen corresponding path program 1 times [2023-12-19 14:07:42,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:42,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070737689] [2023-12-19 14:07:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:42,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:42,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:42,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126278368] [2023-12-19 14:07:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:42,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:42,451 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 14:07:42,454 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 14:07:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:42,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:07:42,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4353 proven. 99 refuted. 0 times theorem prover too weak. 4128 trivial. 0 not checked. [2023-12-19 14:07:43,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:07:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 96 proven. 99 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:07:43,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070737689] [2023-12-19 14:07:43,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126278368] [2023-12-19 14:07:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126278368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:07:43,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:07:43,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 14:07:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394023798] [2023-12-19 14:07:43,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:07:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:07:43,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:07:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:07:43,752 INFO L87 Difference]: Start difference. First operand 11391 states and 18618 transitions. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 14:07:48,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:07:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:49,166 INFO L93 Difference]: Finished difference Result 32299 states and 52877 transitions. [2023-12-19 14:07:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 14:07:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 456 [2023-12-19 14:07:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:49,267 INFO L225 Difference]: With dead ends: 32299 [2023-12-19 14:07:49,267 INFO L226 Difference]: Without dead ends: 20965 [2023-12-19 14:07:49,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-12-19 14:07:49,292 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 944 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:49,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 2430 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1323 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 14:07:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20965 states. [2023-12-19 14:07:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20965 to 12081. [2023-12-19 14:07:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12081 states, 11141 states have (on average 1.6053316578404093) internal successors, (17885), 11161 states have internal predecessors, (17885), 890 states have call successors, (890), 49 states have call predecessors, (890), 49 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:07:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12081 states to 12081 states and 19665 transitions. [2023-12-19 14:07:49,901 INFO L78 Accepts]: Start accepts. Automaton has 12081 states and 19665 transitions. Word has length 456 [2023-12-19 14:07:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:49,901 INFO L495 AbstractCegarLoop]: Abstraction has 12081 states and 19665 transitions. [2023-12-19 14:07:49,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 4 states have call successors, (132), 3 states have call predecessors, (132), 5 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2023-12-19 14:07:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12081 states and 19665 transitions. [2023-12-19 14:07:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 14:07:49,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:49,913 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:49,919 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 14:07:50,119 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 14:07:50,120 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:50,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash 626450841, now seen corresponding path program 1 times [2023-12-19 14:07:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23193398] [2023-12-19 14:07:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:50,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:50,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361436118] [2023-12-19 14:07:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:50,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:50,169 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 14:07:50,200 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 14:07:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:50,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:07:50,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2949 proven. 153 refuted. 0 times theorem prover too weak. 5478 trivial. 0 not checked. [2023-12-19 14:07:50,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:07:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 42 proven. 153 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:07:50,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23193398] [2023-12-19 14:07:50,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:50,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361436118] [2023-12-19 14:07:50,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361436118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:07:50,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:07:50,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 14:07:50,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670087464] [2023-12-19 14:07:50,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:07:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:07:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:07:50,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:07:50,939 INFO L87 Difference]: Start difference. First operand 12081 states and 19665 transitions. Second operand has 12 states, 12 states have (on average 15.75) internal successors, (189), 12 states have internal predecessors, (189), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-19 14:07:55,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:07:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:56,059 INFO L93 Difference]: Finished difference Result 27687 states and 45265 transitions. [2023-12-19 14:07:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 14:07:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.75) internal successors, (189), 12 states have internal predecessors, (189), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 457 [2023-12-19 14:07:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:56,082 INFO L225 Difference]: With dead ends: 27687 [2023-12-19 14:07:56,082 INFO L226 Difference]: Without dead ends: 16217 [2023-12-19 14:07:56,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 14:07:56,096 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1070 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:56,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 2766 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 14:07:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16217 states. [2023-12-19 14:07:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16217 to 12181. [2023-12-19 14:07:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 11216 states have (on average 1.6002139800285307) internal successors, (17948), 11236 states have internal predecessors, (17948), 890 states have call successors, (890), 74 states have call predecessors, (890), 74 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:07:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 19728 transitions. [2023-12-19 14:07:56,410 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 19728 transitions. Word has length 457 [2023-12-19 14:07:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:56,411 INFO L495 AbstractCegarLoop]: Abstraction has 12181 states and 19728 transitions. [2023-12-19 14:07:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.75) internal successors, (189), 12 states have internal predecessors, (189), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-12-19 14:07:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 19728 transitions. [2023-12-19 14:07:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 14:07:56,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:56,423 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:56,432 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 14:07:56,630 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 14:07:56,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:56,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 391067613, now seen corresponding path program 1 times [2023-12-19 14:07:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937501920] [2023-12-19 14:07:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:56,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322631809] [2023-12-19 14:07:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:56,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:56,665 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 14:07:56,693 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 14:07:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:56,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:07:56,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:07:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 815 proven. 186 refuted. 0 times theorem prover too weak. 7579 trivial. 0 not checked. [2023-12-19 14:07:57,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:07:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 9 proven. 186 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:07:57,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:07:57,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937501920] [2023-12-19 14:07:57,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:07:57,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322631809] [2023-12-19 14:07:57,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322631809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:07:57,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:07:57,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:07:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47015601] [2023-12-19 14:07:57,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:07:57,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:07:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:07:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:07:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:07:57,612 INFO L87 Difference]: Start difference. First operand 12181 states and 19728 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 14:07:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:07:58,242 INFO L93 Difference]: Finished difference Result 24432 states and 39432 transitions. [2023-12-19 14:07:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:07:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 457 [2023-12-19 14:07:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:07:58,285 INFO L225 Difference]: With dead ends: 24432 [2023-12-19 14:07:58,285 INFO L226 Difference]: Without dead ends: 12391 [2023-12-19 14:07:58,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 906 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 14:07:58,298 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 492 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:07:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 956 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:07:58,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12391 states. [2023-12-19 14:07:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12391 to 12281. [2023-12-19 14:07:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12281 states, 11291 states have (on average 1.5872819059427863) internal successors, (17922), 11311 states have internal predecessors, (17922), 890 states have call successors, (890), 99 states have call predecessors, (890), 99 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:07:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12281 states to 12281 states and 19702 transitions. [2023-12-19 14:07:58,607 INFO L78 Accepts]: Start accepts. Automaton has 12281 states and 19702 transitions. Word has length 457 [2023-12-19 14:07:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:07:58,608 INFO L495 AbstractCegarLoop]: Abstraction has 12281 states and 19702 transitions. [2023-12-19 14:07:58,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 14:07:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 12281 states and 19702 transitions. [2023-12-19 14:07:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-19 14:07:58,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:07:58,619 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:58,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 14:07:58,825 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 14:07:58,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:07:58,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:07:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1777853023, now seen corresponding path program 1 times [2023-12-19 14:07:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:07:58,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898564786] [2023-12-19 14:07:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:07:58,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:07:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584721859] [2023-12-19 14:07:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:07:58,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:07:58,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:07:58,906 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 14:07:58,934 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 14:07:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:07:59,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:07:59,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:08:00,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898564786] [2023-12-19 14:08:00,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584721859] [2023-12-19 14:08:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584721859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:08:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731971384] [2023-12-19 14:08:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:08:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:08:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:08:00,077 INFO L87 Difference]: Start difference. First operand 12281 states and 19702 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:00,491 INFO L93 Difference]: Finished difference Result 30673 states and 49357 transitions. [2023-12-19 14:08:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 14:08:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 457 [2023-12-19 14:08:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:00,515 INFO L225 Difference]: With dead ends: 30673 [2023-12-19 14:08:00,515 INFO L226 Difference]: Without dead ends: 17203 [2023-12-19 14:08:00,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 14:08:00,531 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 610 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:00,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 2148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:08:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17203 states. [2023-12-19 14:08:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17203 to 12299. [2023-12-19 14:08:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 11309 states have (on average 1.5865240074277125) internal successors, (17942), 11329 states have internal predecessors, (17942), 890 states have call successors, (890), 99 states have call predecessors, (890), 99 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:08:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19722 transitions. [2023-12-19 14:08:00,973 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19722 transitions. Word has length 457 [2023-12-19 14:08:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:00,974 INFO L495 AbstractCegarLoop]: Abstraction has 12299 states and 19722 transitions. [2023-12-19 14:08:00,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19722 transitions. [2023-12-19 14:08:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:00,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:00,987 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:00,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 14:08:01,193 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 14:08:01,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:01,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1220336305, now seen corresponding path program 1 times [2023-12-19 14:08:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043265078] [2023-12-19 14:08:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:01,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186133284] [2023-12-19 14:08:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:01,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:01,245 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 14:08:01,276 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 14:08:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:01,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:08:01,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:08:02,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043265078] [2023-12-19 14:08:02,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186133284] [2023-12-19 14:08:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186133284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:02,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:08:02,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767904166] [2023-12-19 14:08:02,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:02,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:08:02,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:02,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:08:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:08:02,383 INFO L87 Difference]: Start difference. First operand 12299 states and 19722 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:06,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:08:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:07,637 INFO L93 Difference]: Finished difference Result 32462 states and 52402 transitions. [2023-12-19 14:08:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:08:07,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 458 [2023-12-19 14:08:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:07,664 INFO L225 Difference]: With dead ends: 32462 [2023-12-19 14:08:07,664 INFO L226 Difference]: Without dead ends: 20303 [2023-12-19 14:08:07,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:08:07,680 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 691 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:07,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1732 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 14:08:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20303 states. [2023-12-19 14:08:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20303 to 12299. [2023-12-19 14:08:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 11309 states have (on average 1.5860818816871518) internal successors, (17937), 11329 states have internal predecessors, (17937), 890 states have call successors, (890), 99 states have call predecessors, (890), 99 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:08:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19717 transitions. [2023-12-19 14:08:08,095 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19717 transitions. Word has length 458 [2023-12-19 14:08:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:08,095 INFO L495 AbstractCegarLoop]: Abstraction has 12299 states and 19717 transitions. [2023-12-19 14:08:08,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19717 transitions. [2023-12-19 14:08:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:08,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:08,104 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:08,118 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 14:08:08,307 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 14:08:08,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:08,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1163588433, now seen corresponding path program 1 times [2023-12-19 14:08:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:08,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910969331] [2023-12-19 14:08:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:08,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:08,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441109312] [2023-12-19 14:08:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:08,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:08,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:08,386 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 14:08:08,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 14:08:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:08,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 14:08:08,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:08:09,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910969331] [2023-12-19 14:08:09,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441109312] [2023-12-19 14:08:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441109312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:09,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 14:08:09,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587981614] [2023-12-19 14:08:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:08:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:08:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:08:09,133 INFO L87 Difference]: Start difference. First operand 12299 states and 19717 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:10,598 INFO L93 Difference]: Finished difference Result 46246 states and 74694 transitions. [2023-12-19 14:08:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:08:10,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 458 [2023-12-19 14:08:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:10,639 INFO L225 Difference]: With dead ends: 46246 [2023-12-19 14:08:10,639 INFO L226 Difference]: Without dead ends: 34702 [2023-12-19 14:08:10,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:08:10,655 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2262 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:10,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 1986 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 14:08:10,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34702 states. [2023-12-19 14:08:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34702 to 15771. [2023-12-19 14:08:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15771 states, 14756 states have (on average 1.588777446462456) internal successors, (23444), 14776 states have internal predecessors, (23444), 890 states have call successors, (890), 124 states have call predecessors, (890), 124 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:08:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15771 states to 15771 states and 25224 transitions. [2023-12-19 14:08:11,275 INFO L78 Accepts]: Start accepts. Automaton has 15771 states and 25224 transitions. Word has length 458 [2023-12-19 14:08:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:11,275 INFO L495 AbstractCegarLoop]: Abstraction has 15771 states and 25224 transitions. [2023-12-19 14:08:11,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 15771 states and 25224 transitions. [2023-12-19 14:08:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:11,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:11,286 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:11,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 14:08:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 14:08:11,494 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:11,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1536346483, now seen corresponding path program 1 times [2023-12-19 14:08:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179037949] [2023-12-19 14:08:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:11,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:11,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051307006] [2023-12-19 14:08:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:11,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:11,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:11,527 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:11,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 14:08:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:11,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:08:11,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-19 14:08:12,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179037949] [2023-12-19 14:08:12,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051307006] [2023-12-19 14:08:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051307006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:08:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143400556] [2023-12-19 14:08:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:08:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:08:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:08:12,252 INFO L87 Difference]: Start difference. First operand 15771 states and 25224 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:13,138 INFO L93 Difference]: Finished difference Result 45482 states and 72894 transitions. [2023-12-19 14:08:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:08:13,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 458 [2023-12-19 14:08:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:13,174 INFO L225 Difference]: With dead ends: 45482 [2023-12-19 14:08:13,175 INFO L226 Difference]: Without dead ends: 30742 [2023-12-19 14:08:13,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 14:08:13,189 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2173 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:13,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 1550 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:08:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30742 states. [2023-12-19 14:08:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30742 to 15915. [2023-12-19 14:08:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15915 states, 14900 states have (on average 1.5830872483221476) internal successors, (23588), 14920 states have internal predecessors, (23588), 890 states have call successors, (890), 124 states have call predecessors, (890), 124 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2023-12-19 14:08:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15915 states to 15915 states and 25368 transitions. [2023-12-19 14:08:13,751 INFO L78 Accepts]: Start accepts. Automaton has 15915 states and 25368 transitions. Word has length 458 [2023-12-19 14:08:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:13,752 INFO L495 AbstractCegarLoop]: Abstraction has 15915 states and 25368 transitions. [2023-12-19 14:08:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-19 14:08:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 15915 states and 25368 transitions. [2023-12-19 14:08:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:13,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:13,763 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:13,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 14:08:13,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:13,970 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:13,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1608733041, now seen corresponding path program 1 times [2023-12-19 14:08:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177966606] [2023-12-19 14:08:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:14,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462665480] [2023-12-19 14:08:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:14,024 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:14,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 14:08:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:14,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 14:08:14,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4311 proven. 258 refuted. 0 times theorem prover too weak. 4011 trivial. 0 not checked. [2023-12-19 14:08:15,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:08:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 126 proven. 261 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-12-19 14:08:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177966606] [2023-12-19 14:08:15,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462665480] [2023-12-19 14:08:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462665480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:08:15,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:08:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 14:08:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753318962] [2023-12-19 14:08:15,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:08:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 14:08:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 14:08:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-19 14:08:15,413 INFO L87 Difference]: Start difference. First operand 15915 states and 25368 transitions. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 5 states have call successors, (112), 3 states have call predecessors, (112), 7 states have return successors, (113), 5 states have call predecessors, (113), 5 states have call successors, (113) [2023-12-19 14:08:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:16,649 INFO L93 Difference]: Finished difference Result 31383 states and 49939 transitions. [2023-12-19 14:08:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 14:08:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 5 states have call successors, (112), 3 states have call predecessors, (112), 7 states have return successors, (113), 5 states have call predecessors, (113), 5 states have call successors, (113) Word has length 458 [2023-12-19 14:08:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:16,671 INFO L225 Difference]: With dead ends: 31383 [2023-12-19 14:08:16,671 INFO L226 Difference]: Without dead ends: 16139 [2023-12-19 14:08:16,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:08:16,682 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 292 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:16,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1116 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 14:08:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16139 states. [2023-12-19 14:08:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16139 to 14559. [2023-12-19 14:08:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14559 states, 13798 states have (on average 1.5911001594433976) internal successors, (21954), 13806 states have internal predecessors, (21954), 666 states have call successors, (666), 94 states have call predecessors, (666), 94 states have return successors, (666), 658 states have call predecessors, (666), 666 states have call successors, (666) [2023-12-19 14:08:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14559 states to 14559 states and 23286 transitions. [2023-12-19 14:08:17,030 INFO L78 Accepts]: Start accepts. Automaton has 14559 states and 23286 transitions. Word has length 458 [2023-12-19 14:08:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:17,030 INFO L495 AbstractCegarLoop]: Abstraction has 14559 states and 23286 transitions. [2023-12-19 14:08:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 5 states have call successors, (112), 3 states have call predecessors, (112), 7 states have return successors, (113), 5 states have call predecessors, (113), 5 states have call successors, (113) [2023-12-19 14:08:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14559 states and 23286 transitions. [2023-12-19 14:08:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:17,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:17,041 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:17,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 14:08:17,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:17,248 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:17,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1954266829, now seen corresponding path program 1 times [2023-12-19 14:08:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:17,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487325677] [2023-12-19 14:08:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:17,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:17,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545465048] [2023-12-19 14:08:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:17,280 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:17,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 14:08:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:17,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 14:08:17,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4209 proven. 195 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2023-12-19 14:08:18,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:08:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-19 14:08:18,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487325677] [2023-12-19 14:08:18,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545465048] [2023-12-19 14:08:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545465048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:08:18,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:08:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2023-12-19 14:08:18,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792349352] [2023-12-19 14:08:18,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:08:18,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 14:08:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 14:08:18,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-19 14:08:18,822 INFO L87 Difference]: Start difference. First operand 14559 states and 23286 transitions. Second operand has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 14:08:21,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:08:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:22,602 INFO L93 Difference]: Finished difference Result 24643 states and 39147 transitions. [2023-12-19 14:08:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 14:08:22,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) Word has length 458 [2023-12-19 14:08:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:22,615 INFO L225 Difference]: With dead ends: 24643 [2023-12-19 14:08:22,615 INFO L226 Difference]: Without dead ends: 10259 [2023-12-19 14:08:22,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 901 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2023-12-19 14:08:22,627 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1041 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:22,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 2075 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 14:08:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10259 states. [2023-12-19 14:08:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10259 to 5120. [2023-12-19 14:08:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 4843 states have (on average 1.5147635762956846) internal successors, (7336), 4845 states have internal predecessors, (7336), 234 states have call successors, (234), 42 states have call predecessors, (234), 42 states have return successors, (234), 232 states have call predecessors, (234), 234 states have call successors, (234) [2023-12-19 14:08:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7804 transitions. [2023-12-19 14:08:22,862 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7804 transitions. Word has length 458 [2023-12-19 14:08:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:22,863 INFO L495 AbstractCegarLoop]: Abstraction has 5120 states and 7804 transitions. [2023-12-19 14:08:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 5 states have call successors, (131), 3 states have call predecessors, (131), 5 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2023-12-19 14:08:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7804 transitions. [2023-12-19 14:08:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:22,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:22,868 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:22,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 14:08:23,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:23,075 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:23,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 420686901, now seen corresponding path program 1 times [2023-12-19 14:08:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262931416] [2023-12-19 14:08:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:23,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122241527] [2023-12-19 14:08:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:23,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:23,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:23,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:23,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 14:08:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:23,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 14:08:23,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4043 proven. 384 refuted. 0 times theorem prover too weak. 4153 trivial. 0 not checked. [2023-12-19 14:08:24,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:08:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 132 proven. 255 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-12-19 14:08:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262931416] [2023-12-19 14:08:25,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122241527] [2023-12-19 14:08:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122241527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:08:25,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:08:25,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-12-19 14:08:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39314678] [2023-12-19 14:08:25,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:08:25,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 14:08:25,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 14:08:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-12-19 14:08:25,526 INFO L87 Difference]: Start difference. First operand 5120 states and 7804 transitions. Second operand has 22 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) [2023-12-19 14:08:30,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:08:34,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 14:08:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:35,144 INFO L93 Difference]: Finished difference Result 9677 states and 14747 transitions. [2023-12-19 14:08:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 14:08:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) Word has length 458 [2023-12-19 14:08:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:35,149 INFO L225 Difference]: With dead ends: 9677 [2023-12-19 14:08:35,149 INFO L226 Difference]: Without dead ends: 5364 [2023-12-19 14:08:35,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=466, Invalid=1174, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 14:08:35,152 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2817 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 410 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:35,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2855 Valid, 1828 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1435 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2023-12-19 14:08:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2023-12-19 14:08:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4784. [2023-12-19 14:08:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4542 states have (on average 1.4916336415675913) internal successors, (6775), 4542 states have internal predecessors, (6775), 198 states have call successors, (198), 43 states have call predecessors, (198), 43 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-19 14:08:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 7171 transitions. [2023-12-19 14:08:35,275 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 7171 transitions. Word has length 458 [2023-12-19 14:08:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:35,275 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 7171 transitions. [2023-12-19 14:08:35,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (112), 4 states have call predecessors, (112), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) [2023-12-19 14:08:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 7171 transitions. [2023-12-19 14:08:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 14:08:35,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:35,280 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:35,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 14:08:35,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:35,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:35,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 854415987, now seen corresponding path program 1 times [2023-12-19 14:08:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237234594] [2023-12-19 14:08:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:35,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822600468] [2023-12-19 14:08:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:35,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:35,566 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:35,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 14:08:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:36,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 14:08:36,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4254 proven. 534 refuted. 0 times theorem prover too weak. 3792 trivial. 0 not checked. [2023-12-19 14:08:43,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:08:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237234594] [2023-12-19 14:08:48,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822600468] [2023-12-19 14:08:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822600468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:08:48,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:08:48,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-12-19 14:08:48,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443701232] [2023-12-19 14:08:48,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:08:48,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 14:08:48,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:48,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 14:08:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 14:08:48,085 INFO L87 Difference]: Start difference. First operand 4784 states and 7171 transitions. Second operand has 22 states, 22 states have (on average 6.909090909090909) internal successors, (152), 21 states have internal predecessors, (152), 5 states have call successors, (66), 5 states have call predecessors, (66), 8 states have return successors, (66), 5 states have call predecessors, (66), 5 states have call successors, (66) [2023-12-19 14:08:55,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:02,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:04,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:14,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:18,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:19,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:23,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:27,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:32,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:36,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:38,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:42,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:44,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:48,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:09:53,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:10:36,818 WARN L293 SmtUtils]: Spent 23.31s on a formula simplification. DAG size of input: 236 DAG size of output: 223 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:10:39,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:10:43,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:10:46,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:10:50,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:14:03,863 WARN L293 SmtUtils]: Spent 3.14m on a formula simplification. DAG size of input: 280 DAG size of output: 267 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:14:11,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:16,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:17,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:19,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:21,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:27,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:14:35,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:14:40,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:07,884 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 206 DAG size of output: 193 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:15:11,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:15,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:21,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:25,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:29,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:34,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:38,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:15:42,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:15:46,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:50,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:54,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:15:56,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:01,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:05,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:09,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:14,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:18,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:22,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:26,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:31,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:16:35,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:16:40,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:16:44,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:16:49,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:53,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:16:57,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:01,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:03,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:07,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:11,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:16,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:17:20,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:25,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:29,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:17:33,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:17:37,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:41,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:46,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:50,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:54,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:17:58,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:02,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:06,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:10,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:14,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:18,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:23,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:27,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:31,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:35,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:18:40,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:18:44,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:18:48,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:18:51,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:18:55,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:19:00,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:19:01,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 14:19:06,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:10,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:14,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:18,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:22,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:27,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:31,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:36,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:40,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:44,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:48,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:52,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:19:56,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:01,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:05,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:09,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:13,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:17,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:21,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:47,578 WARN L293 SmtUtils]: Spent 13.10s on a formula simplification. DAG size of input: 209 DAG size of output: 196 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:20:53,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:54,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:20:58,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:21:23,044 WARN L293 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 211 DAG size of output: 198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 14:21:27,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:21:34,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:21:39,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-19 14:21:43,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 14:21:43,578 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 14:21:43,579 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 14:21:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-19 14:21:43,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 333.0s TimeCoverageRelationStatistics Valid=1029, Invalid=3252, Unknown=9, NotChecked=0, Total=4290 [2023-12-19 14:21:43,593 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 3682 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 128 mSolverCounterUnsat, 92 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 441.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3683 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 92 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 444.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:21:43,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3683 Valid, 2646 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2530 Invalid, 92 Unknown, 0 Unchecked, 444.8s Time] [2023-12-19 14:21:43,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 14:21:43,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-19 14:21:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:21:43,796 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4784states) and FLOYD_HOARE automaton (currently 43 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (10451 states constructed, input type IntersectNwa). [2023-12-19 14:21:43,804 INFO L445 BasicCegarLoop]: Path program histogram: [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 14:21:43,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 14:21:43,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 02:21:43 BoogieIcfgContainer [2023-12-19 14:21:43,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 14:21:43,807 INFO L158 Benchmark]: Toolchain (without parser) took 866600.99ms. Allocated memory was 417.3MB in the beginning and 1.3GB in the end (delta: 922.7MB). Free memory was 369.1MB in the beginning and 734.7MB in the end (delta: -365.6MB). Peak memory consumption was 558.1MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.73ms. Allocated memory is still 417.3MB. Free memory was 368.8MB in the beginning and 332.8MB in the end (delta: 36.1MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.98ms. Allocated memory is still 417.3MB. Free memory was 332.8MB in the beginning and 318.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: Boogie Preprocessor took 147.96ms. Allocated memory is still 417.3MB. Free memory was 318.1MB in the beginning and 352.1MB in the end (delta: -34.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: RCFGBuilder took 909.08ms. Allocated memory is still 417.3MB. Free memory was 352.1MB in the beginning and 258.3MB in the end (delta: 93.8MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,807 INFO L158 Benchmark]: TraceAbstraction took 864758.20ms. Allocated memory was 417.3MB in the beginning and 1.3GB in the end (delta: 922.7MB). Free memory was 257.7MB in the beginning and 734.7MB in the end (delta: -477.0MB). Peak memory consumption was 446.0MB. Max. memory is 8.0GB. [2023-12-19 14:21:43,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 677.73ms. Allocated memory is still 417.3MB. Free memory was 368.8MB in the beginning and 332.8MB in the end (delta: 36.1MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 103.98ms. Allocated memory is still 417.3MB. Free memory was 332.8MB in the beginning and 318.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.96ms. Allocated memory is still 417.3MB. Free memory was 318.1MB in the beginning and 352.1MB in the end (delta: -34.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 909.08ms. Allocated memory is still 417.3MB. Free memory was 352.1MB in the beginning and 258.3MB in the end (delta: 93.8MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. * TraceAbstraction took 864758.20ms. Allocated memory was 417.3MB in the beginning and 1.3GB in the end (delta: 922.7MB). Free memory was 257.7MB in the beginning and 734.7MB in the end (delta: -477.0MB). Peak memory consumption was 446.0MB. 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 constructing difference of abstraction (4784states) and FLOYD_HOARE automaton (currently 43 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (10451 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 273 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 864.7s, OverallIterations: 23, TraceHistogramMax: 66, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 821.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 mSolverCounterUnknown, 23734 SdHoareTripleChecker+Valid, 485.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23516 mSDsluCounter, 36690 SdHoareTripleChecker+Invalid, 480.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25650 mSDsCounter, 2124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11134 IncrementalHoareTripleChecker+Invalid, 13357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2124 mSolverCounterUnsat, 11040 mSDtfsCounter, 11134 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14592 GetRequests, 14331 SyntacticMatches, 3 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 334.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15915occurred in iteration=19, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 22 MinimizatonAttempts, 77254 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 10958 NumberOfCodeBlocks, 10958 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 14128 ConstructedInterpolants, 10 QuantifiedInterpolants, 52896 SizeOfPredicates, 74 NumberOfNonLiveVariables, 25953 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 31 InterpolantComputations, 14 PerfectInterpolantSequences, 262710/265980 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