/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:01:14,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:01:15,051 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:01:15,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:01:15,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:01:15,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:01:15,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:01:15,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:01:15,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:01:15,098 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:01:15,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:01:15,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:01:15,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:01:15,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:01:15,100 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:01:15,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:01:15,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:01:15,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:01:15,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:01:15,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:01:15,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:01:15,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:01:15,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:01:15,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:01:15,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:01:15,103 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:01:15,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:01:15,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:01:15,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:01:15,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:01:15,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:01:15,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:01:15,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:01:15,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:01:15,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:01:15,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:01:15,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:01:15,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:01:15,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:01:15,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:01:15,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:01:15,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:01:15,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:01:15,107 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:01:15,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:01:15,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:01:15,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:01:15,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:01:15,363 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:01:15,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-15 20:01:16,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:01:16,756 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:01:16,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-15 20:01:16,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d24387d/640c0b3f4fe940dcbb51e204cf8ecfea/FLAGa9413e7f4 [2023-12-15 20:01:16,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d24387d/640c0b3f4fe940dcbb51e204cf8ecfea [2023-12-15 20:01:16,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:01:16,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:01:16,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:01:16,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:01:16,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:01:16,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:01:16" (1/1) ... [2023-12-15 20:01:16,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620203b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:16, skipping insertion in model container [2023-12-15 20:01:16,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:01:16" (1/1) ... [2023-12-15 20:01:16,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:01:17,017 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i[915,928] [2023-12-15 20:01:17,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:01:17,239 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:01:17,249 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-7.i[915,928] [2023-12-15 20:01:17,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:01:17,350 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:01:17,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17 WrapperNode [2023-12-15 20:01:17,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:01:17,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:01:17,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:01:17,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:01:17,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,454 INFO L138 Inliner]: procedures = 26, calls = 114, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 912 [2023-12-15 20:01:17,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:01:17,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:01:17,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:01:17,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:01:17,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,506 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:01:17,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:01:17,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:01:17,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:01:17,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:01:17,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (1/1) ... [2023-12-15 20:01:17,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:01:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:17,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 20:01:17,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 20:01:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:01:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:01:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:01:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:01:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:01:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:01:17,803 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:01:17,804 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:01:18,804 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:01:18,870 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:01:18,871 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:01:18,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:01:18 BoogieIcfgContainer [2023-12-15 20:01:18,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:01:18,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:01:18,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:01:18,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:01:18,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:01:16" (1/3) ... [2023-12-15 20:01:18,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb35d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:01:18, skipping insertion in model container [2023-12-15 20:01:18,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:01:17" (2/3) ... [2023-12-15 20:01:18,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb35d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:01:18, skipping insertion in model container [2023-12-15 20:01:18,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:01:18" (3/3) ... [2023-12-15 20:01:18,881 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-7.i [2023-12-15 20:01:18,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:01:18,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:01:18,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:01:18,970 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;@559156b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:01:18,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:01:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 227 states have (on average 1.6651982378854626) internal successors, (378), 228 states have internal predecessors, (378), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-15 20:01:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-15 20:01:19,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:19,017 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:19,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:19,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1829929600, now seen corresponding path program 1 times [2023-12-15 20:01:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:19,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017458088] [2023-12-15 20:01:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017458088] [2023-12-15 20:01:19,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:01:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555385764] [2023-12-15 20:01:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:19,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:19,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:19,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:01:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:19,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:01:19,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 20000 trivial. 0 not checked. [2023-12-15 20:01:20,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555385764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:01:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257319944] [2023-12-15 20:01:20,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:20,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:01:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:01:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:01:20,043 INFO L87 Difference]: Start difference. First operand has 331 states, 227 states have (on average 1.6651982378854626) internal successors, (378), 228 states have internal predecessors, (378), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-15 20:01:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:20,136 INFO L93 Difference]: Finished difference Result 659 states and 1259 transitions. [2023-12-15 20:01:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:01:20,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) Word has length 652 [2023-12-15 20:01:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:20,153 INFO L225 Difference]: With dead ends: 659 [2023-12-15 20:01:20,153 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 20:01:20,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:01:20,171 INFO L413 NwaCegarLoop]: 570 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, 570 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:20,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 570 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 20:01:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-12-15 20:01:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 226 states have (on average 1.6415929203539823) internal successors, (371), 226 states have internal predecessors, (371), 101 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-15 20:01:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 573 transitions. [2023-12-15 20:01:20,283 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 573 transitions. Word has length 652 [2023-12-15 20:01:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:20,285 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 573 transitions. [2023-12-15 20:01:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 2 states have call successors, (101) [2023-12-15 20:01:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 573 transitions. [2023-12-15 20:01:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-12-15 20:01:20,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:20,311 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:20,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:01:20,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:20,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1475865266, now seen corresponding path program 1 times [2023-12-15 20:01:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62082390] [2023-12-15 20:01:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:20,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835662325] [2023-12-15 20:01:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:20,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:20,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:20,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:20,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:01:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:21,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:21,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:21,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62082390] [2023-12-15 20:01:21,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835662325] [2023-12-15 20:01:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835662325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854184278] [2023-12-15 20:01:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:21,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:21,192 INFO L87 Difference]: Start difference. First operand 329 states and 573 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:21,314 INFO L93 Difference]: Finished difference Result 882 states and 1532 transitions. [2023-12-15 20:01:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 653 [2023-12-15 20:01:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:21,326 INFO L225 Difference]: With dead ends: 882 [2023-12-15 20:01:21,326 INFO L226 Difference]: Without dead ends: 554 [2023-12-15 20:01:21,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:21,332 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 384 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:21,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1299 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-15 20:01:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 551. [2023-12-15 20:01:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 380 states have (on average 1.6342105263157896) internal successors, (621), 381 states have internal predecessors, (621), 168 states have call successors, (168), 2 states have call predecessors, (168), 2 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-15 20:01:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 957 transitions. [2023-12-15 20:01:21,406 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 957 transitions. Word has length 653 [2023-12-15 20:01:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:21,432 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 957 transitions. [2023-12-15 20:01:21,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 957 transitions. [2023-12-15 20:01:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-12-15 20:01:21,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:21,443 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:21,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:01:21,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1435190516, now seen corresponding path program 1 times [2023-12-15 20:01:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:21,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481075957] [2023-12-15 20:01:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:21,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:21,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532123384] [2023-12-15 20:01:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:21,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:21,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:01:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:22,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:22,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:22,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481075957] [2023-12-15 20:01:22,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532123384] [2023-12-15 20:01:22,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532123384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:22,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457129375] [2023-12-15 20:01:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:22,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:22,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:22,265 INFO L87 Difference]: Start difference. First operand 551 states and 957 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:22,342 INFO L93 Difference]: Finished difference Result 1500 states and 2617 transitions. [2023-12-15 20:01:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:22,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 653 [2023-12-15 20:01:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:22,351 INFO L225 Difference]: With dead ends: 1500 [2023-12-15 20:01:22,351 INFO L226 Difference]: Without dead ends: 950 [2023-12-15 20:01:22,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:22,354 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 381 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:22,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1334 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-15 20:01:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 946. [2023-12-15 20:01:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 695 states have (on average 1.6705035971223021) internal successors, (1161), 698 states have internal predecessors, (1161), 246 states have call successors, (246), 4 states have call predecessors, (246), 4 states have return successors, (246), 243 states have call predecessors, (246), 246 states have call successors, (246) [2023-12-15 20:01:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1653 transitions. [2023-12-15 20:01:22,437 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1653 transitions. Word has length 653 [2023-12-15 20:01:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:22,439 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1653 transitions. [2023-12-15 20:01:22,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1653 transitions. [2023-12-15 20:01:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-12-15 20:01:22,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:22,446 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:22,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:22,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:22,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:22,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash 215304784, now seen corresponding path program 1 times [2023-12-15 20:01:22,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436349593] [2023-12-15 20:01:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:22,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:22,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773806480] [2023-12-15 20:01:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:22,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:22,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:22,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:22,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:01:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:23,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:23,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:23,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:23,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:23,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436349593] [2023-12-15 20:01:23,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:23,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773806480] [2023-12-15 20:01:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773806480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:23,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:23,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539412359] [2023-12-15 20:01:23,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:23,206 INFO L87 Difference]: Start difference. First operand 946 states and 1653 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:23,302 INFO L93 Difference]: Finished difference Result 2686 states and 4690 transitions. [2023-12-15 20:01:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 653 [2023-12-15 20:01:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:23,314 INFO L225 Difference]: With dead ends: 2686 [2023-12-15 20:01:23,314 INFO L226 Difference]: Without dead ends: 1741 [2023-12-15 20:01:23,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:23,320 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 380 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:23,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2023-12-15 20:01:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2023-12-15 20:01:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1286 states have (on average 1.6625194401244168) internal successors, (2138), 1293 states have internal predecessors, (2138), 442 states have call successors, (442), 8 states have call predecessors, (442), 8 states have return successors, (442), 435 states have call predecessors, (442), 442 states have call successors, (442) [2023-12-15 20:01:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 3022 transitions. [2023-12-15 20:01:23,437 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 3022 transitions. Word has length 653 [2023-12-15 20:01:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:23,438 INFO L495 AbstractCegarLoop]: Abstraction has 1737 states and 3022 transitions. [2023-12-15 20:01:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 3022 transitions. [2023-12-15 20:01:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-12-15 20:01:23,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:23,445 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:23,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:23,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:23,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -463967470, now seen corresponding path program 1 times [2023-12-15 20:01:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903063835] [2023-12-15 20:01:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:23,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:23,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:23,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043548751] [2023-12-15 20:01:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:23,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:01:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:24,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:24,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:24,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903063835] [2023-12-15 20:01:24,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043548751] [2023-12-15 20:01:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043548751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:24,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728190336] [2023-12-15 20:01:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:24,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:24,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:24,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:24,185 INFO L87 Difference]: Start difference. First operand 1737 states and 3022 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:24,280 INFO L93 Difference]: Finished difference Result 3495 states and 6060 transitions. [2023-12-15 20:01:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 653 [2023-12-15 20:01:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:24,291 INFO L225 Difference]: With dead ends: 3495 [2023-12-15 20:01:24,291 INFO L226 Difference]: Without dead ends: 1759 [2023-12-15 20:01:24,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:24,296 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 356 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:24,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1288 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2023-12-15 20:01:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1373. [2023-12-15 20:01:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1078 states have (on average 1.7244897959183674) internal successors, (1859), 1081 states have internal predecessors, (1859), 286 states have call successors, (286), 8 states have call predecessors, (286), 8 states have return successors, (286), 283 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-15 20:01:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2431 transitions. [2023-12-15 20:01:24,397 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2431 transitions. Word has length 653 [2023-12-15 20:01:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:24,398 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2431 transitions. [2023-12-15 20:01:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2431 transitions. [2023-12-15 20:01:24,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:24,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:24,404 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:24,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:24,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:24,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1632520808, now seen corresponding path program 1 times [2023-12-15 20:01:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475431414] [2023-12-15 20:01:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:24,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115594483] [2023-12-15 20:01:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:24,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:24,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:24,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:01:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:25,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:25,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:25,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475431414] [2023-12-15 20:01:25,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115594483] [2023-12-15 20:01:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115594483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:25,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:25,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:25,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107795307] [2023-12-15 20:01:25,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:25,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:25,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:25,117 INFO L87 Difference]: Start difference. First operand 1373 states and 2431 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:25,198 INFO L93 Difference]: Finished difference Result 2757 states and 4870 transitions. [2023-12-15 20:01:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 654 [2023-12-15 20:01:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:25,207 INFO L225 Difference]: With dead ends: 2757 [2023-12-15 20:01:25,207 INFO L226 Difference]: Without dead ends: 1385 [2023-12-15 20:01:25,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:25,211 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 368 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:25,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1341 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-12-15 20:01:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1137. [2023-12-15 20:01:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 962 states have (on average 1.7827442827442828) internal successors, (1715), 963 states have internal predecessors, (1715), 168 states have call successors, (168), 6 states have call predecessors, (168), 6 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-15 20:01:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2051 transitions. [2023-12-15 20:01:25,266 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2051 transitions. Word has length 654 [2023-12-15 20:01:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:25,266 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 2051 transitions. [2023-12-15 20:01:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2051 transitions. [2023-12-15 20:01:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:25,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:25,273 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:25,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:25,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:25,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:25,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1882320808, now seen corresponding path program 1 times [2023-12-15 20:01:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:25,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041266252] [2023-12-15 20:01:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:25,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:25,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53840792] [2023-12-15 20:01:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:25,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:25,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:25,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:25,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:01:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:25,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:01:25,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:26,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:26,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041266252] [2023-12-15 20:01:26,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53840792] [2023-12-15 20:01:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53840792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:26,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766366457] [2023-12-15 20:01:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:26,024 INFO L87 Difference]: Start difference. First operand 1137 states and 2051 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:26,105 INFO L93 Difference]: Finished difference Result 3253 states and 5872 transitions. [2023-12-15 20:01:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 654 [2023-12-15 20:01:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:26,115 INFO L225 Difference]: With dead ends: 3253 [2023-12-15 20:01:26,116 INFO L226 Difference]: Without dead ends: 2117 [2023-12-15 20:01:26,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:26,120 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 367 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:26,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1246 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-12-15 20:01:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2113. [2023-12-15 20:01:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 1810 states have (on average 1.7845303867403315) internal successors, (3230), 1813 states have internal predecessors, (3230), 290 states have call successors, (290), 12 states have call predecessors, (290), 12 states have return successors, (290), 287 states have call predecessors, (290), 290 states have call successors, (290) [2023-12-15 20:01:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 3810 transitions. [2023-12-15 20:01:26,206 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 3810 transitions. Word has length 654 [2023-12-15 20:01:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:26,207 INFO L495 AbstractCegarLoop]: Abstraction has 2113 states and 3810 transitions. [2023-12-15 20:01:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 3810 transitions. [2023-12-15 20:01:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:26,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:26,215 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:26,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:26,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:26,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 196140970, now seen corresponding path program 1 times [2023-12-15 20:01:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:26,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886320767] [2023-12-15 20:01:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:26,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:26,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522893514] [2023-12-15 20:01:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:26,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:26,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:26,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:26,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:01:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:26,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:01:26,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:27,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886320767] [2023-12-15 20:01:27,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522893514] [2023-12-15 20:01:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522893514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:01:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020783631] [2023-12-15 20:01:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:01:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:01:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:01:27,010 INFO L87 Difference]: Start difference. First operand 2113 states and 3810 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:27,437 INFO L93 Difference]: Finished difference Result 7472 states and 13350 transitions. [2023-12-15 20:01:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:01:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 654 [2023-12-15 20:01:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:27,465 INFO L225 Difference]: With dead ends: 7472 [2023-12-15 20:01:27,465 INFO L226 Difference]: Without dead ends: 5360 [2023-12-15 20:01:27,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:01:27,473 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 781 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:27,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1964 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:01:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2023-12-15 20:01:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 2989. [2023-12-15 20:01:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2398 states have (on average 1.713928273561301) internal successors, (4110), 2405 states have internal predecessors, (4110), 566 states have call successors, (566), 24 states have call predecessors, (566), 24 states have return successors, (566), 559 states have call predecessors, (566), 566 states have call successors, (566) [2023-12-15 20:01:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 5242 transitions. [2023-12-15 20:01:27,668 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 5242 transitions. Word has length 654 [2023-12-15 20:01:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:27,669 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 5242 transitions. [2023-12-15 20:01:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 5242 transitions. [2023-12-15 20:01:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:27,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:27,703 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:27,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:27,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:01:27,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:27,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1885084712, now seen corresponding path program 1 times [2023-12-15 20:01:27,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:27,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992284133] [2023-12-15 20:01:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:27,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724979338] [2023-12-15 20:01:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:27,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:27,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:27,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:27,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:01:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:28,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:01:28,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:28,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992284133] [2023-12-15 20:01:28,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724979338] [2023-12-15 20:01:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724979338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:28,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:28,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:01:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748778975] [2023-12-15 20:01:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:01:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:01:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:01:28,423 INFO L87 Difference]: Start difference. First operand 2989 states and 5242 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:29,069 INFO L93 Difference]: Finished difference Result 10555 states and 18098 transitions. [2023-12-15 20:01:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:01:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 654 [2023-12-15 20:01:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:29,107 INFO L225 Difference]: With dead ends: 10555 [2023-12-15 20:01:29,107 INFO L226 Difference]: Without dead ends: 7567 [2023-12-15 20:01:29,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:01:29,118 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 898 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:29,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2849 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:01:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2023-12-15 20:01:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 5589. [2023-12-15 20:01:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5589 states, 4470 states have (on average 1.705145413870246) internal successors, (7622), 4485 states have internal predecessors, (7622), 1070 states have call successors, (1070), 48 states have call predecessors, (1070), 48 states have return successors, (1070), 1055 states have call predecessors, (1070), 1070 states have call successors, (1070) [2023-12-15 20:01:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 9762 transitions. [2023-12-15 20:01:29,557 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 9762 transitions. Word has length 654 [2023-12-15 20:01:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:29,558 INFO L495 AbstractCegarLoop]: Abstraction has 5589 states and 9762 transitions. [2023-12-15 20:01:29,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 9762 transitions. [2023-12-15 20:01:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:29,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:29,572 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:29,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:29,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:29,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:29,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1533863578, now seen corresponding path program 1 times [2023-12-15 20:01:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759683245] [2023-12-15 20:01:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:29,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870593426] [2023-12-15 20:01:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:29,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:29,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:29,838 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:29,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:01:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:30,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:01:30,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:30,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759683245] [2023-12-15 20:01:30,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870593426] [2023-12-15 20:01:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870593426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:30,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:01:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496862495] [2023-12-15 20:01:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:30,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:01:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:01:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:01:30,340 INFO L87 Difference]: Start difference. First operand 5589 states and 9762 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:31,106 INFO L93 Difference]: Finished difference Result 20038 states and 35507 transitions. [2023-12-15 20:01:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:01:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 654 [2023-12-15 20:01:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:31,166 INFO L225 Difference]: With dead ends: 20038 [2023-12-15 20:01:31,166 INFO L226 Difference]: Without dead ends: 14450 [2023-12-15 20:01:31,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:01:31,184 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 794 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:31,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2779 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:01:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2023-12-15 20:01:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 14414. [2023-12-15 20:01:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14414 states, 12431 states have (on average 1.7572198535918269) internal successors, (21844), 12478 states have internal predecessors, (21844), 1902 states have call successors, (1902), 80 states have call predecessors, (1902), 80 states have return successors, (1902), 1855 states have call predecessors, (1902), 1902 states have call successors, (1902) [2023-12-15 20:01:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14414 states to 14414 states and 25648 transitions. [2023-12-15 20:01:31,949 INFO L78 Accepts]: Start accepts. Automaton has 14414 states and 25648 transitions. Word has length 654 [2023-12-15 20:01:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:31,950 INFO L495 AbstractCegarLoop]: Abstraction has 14414 states and 25648 transitions. [2023-12-15 20:01:31,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 14414 states and 25648 transitions. [2023-12-15 20:01:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-15 20:01:31,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:31,975 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:31,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:32,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:01:32,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:32,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash -209007384, now seen corresponding path program 1 times [2023-12-15 20:01:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574407661] [2023-12-15 20:01:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:32,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:32,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370716015] [2023-12-15 20:01:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:32,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:32,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:01:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:32,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:01:32,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 4500 proven. 36 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2023-12-15 20:01:32,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:01:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 264 proven. 36 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-15 20:01:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574407661] [2023-12-15 20:01:33,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370716015] [2023-12-15 20:01:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370716015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:01:33,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:01:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:01:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391205353] [2023-12-15 20:01:33,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:01:33,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:01:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:01:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:01:33,216 INFO L87 Difference]: Start difference. First operand 14414 states and 25648 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-15 20:01:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:34,070 INFO L93 Difference]: Finished difference Result 24925 states and 44736 transitions. [2023-12-15 20:01:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:01:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 654 [2023-12-15 20:01:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:34,096 INFO L225 Difference]: With dead ends: 24925 [2023-12-15 20:01:34,097 INFO L226 Difference]: Without dead ends: 10512 [2023-12-15 20:01:34,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1300 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:01:34,126 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 697 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:34,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1187 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:01:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10512 states. [2023-12-15 20:01:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10512 to 10430. [2023-12-15 20:01:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10430 states, 9430 states have (on average 1.8022269353128313) internal successors, (16995), 9453 states have internal predecessors, (16995), 958 states have call successors, (958), 41 states have call predecessors, (958), 41 states have return successors, (958), 935 states have call predecessors, (958), 958 states have call successors, (958) [2023-12-15 20:01:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10430 states to 10430 states and 18911 transitions. [2023-12-15 20:01:34,633 INFO L78 Accepts]: Start accepts. Automaton has 10430 states and 18911 transitions. Word has length 654 [2023-12-15 20:01:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:34,634 INFO L495 AbstractCegarLoop]: Abstraction has 10430 states and 18911 transitions. [2023-12-15 20:01:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-15 20:01:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 10430 states and 18911 transitions. [2023-12-15 20:01:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-15 20:01:34,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:34,658 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:34,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:01:34,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:34,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -141387256, now seen corresponding path program 1 times [2023-12-15 20:01:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350675607] [2023-12-15 20:01:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:34,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:34,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222212832] [2023-12-15 20:01:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:34,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:34,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:01:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:35,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:01:35,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:35,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350675607] [2023-12-15 20:01:35,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222212832] [2023-12-15 20:01:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222212832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822081776] [2023-12-15 20:01:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:35,457 INFO L87 Difference]: Start difference. First operand 10430 states and 18911 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:36,071 INFO L93 Difference]: Finished difference Result 31288 states and 56731 transitions. [2023-12-15 20:01:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 655 [2023-12-15 20:01:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:36,124 INFO L225 Difference]: With dead ends: 31288 [2023-12-15 20:01:36,124 INFO L226 Difference]: Without dead ends: 20859 [2023-12-15 20:01:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:36,142 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 543 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:36,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1505 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20859 states. [2023-12-15 20:01:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20859 to 20857. [2023-12-15 20:01:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20857 states, 18858 states have (on average 1.7895853218793085) internal successors, (33748), 18904 states have internal predecessors, (33748), 1916 states have call successors, (1916), 82 states have call predecessors, (1916), 82 states have return successors, (1916), 1870 states have call predecessors, (1916), 1916 states have call successors, (1916) [2023-12-15 20:01:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20857 states to 20857 states and 37580 transitions. [2023-12-15 20:01:36,984 INFO L78 Accepts]: Start accepts. Automaton has 20857 states and 37580 transitions. Word has length 655 [2023-12-15 20:01:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:36,985 INFO L495 AbstractCegarLoop]: Abstraction has 20857 states and 37580 transitions. [2023-12-15 20:01:36,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20857 states and 37580 transitions. [2023-12-15 20:01:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-15 20:01:37,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:37,023 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:37,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:37,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:01:37,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:37,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash -164019510, now seen corresponding path program 1 times [2023-12-15 20:01:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301171863] [2023-12-15 20:01:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:37,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228876044] [2023-12-15 20:01:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:37,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:37,290 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:37,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:01:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:37,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:01:37,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:38,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301171863] [2023-12-15 20:01:38,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228876044] [2023-12-15 20:01:38,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228876044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:38,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:01:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119632636] [2023-12-15 20:01:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:38,323 INFO L87 Difference]: Start difference. First operand 20857 states and 37580 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:39,204 INFO L93 Difference]: Finished difference Result 52142 states and 94069 transitions. [2023-12-15 20:01:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:39,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 655 [2023-12-15 20:01:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:39,293 INFO L225 Difference]: With dead ends: 52142 [2023-12-15 20:01:39,293 INFO L226 Difference]: Without dead ends: 31286 [2023-12-15 20:01:39,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:39,325 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 268 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:39,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1127 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31286 states. [2023-12-15 20:01:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31286 to 31284. [2023-12-15 20:01:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31284 states, 28286 states have (on average 1.7887647599519196) internal successors, (50597), 28355 states have internal predecessors, (50597), 2874 states have call successors, (2874), 123 states have call predecessors, (2874), 123 states have return successors, (2874), 2805 states have call predecessors, (2874), 2874 states have call successors, (2874) [2023-12-15 20:01:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31284 states to 31284 states and 56345 transitions. [2023-12-15 20:01:40,691 INFO L78 Accepts]: Start accepts. Automaton has 31284 states and 56345 transitions. Word has length 655 [2023-12-15 20:01:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:40,691 INFO L495 AbstractCegarLoop]: Abstraction has 31284 states and 56345 transitions. [2023-12-15 20:01:40,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31284 states and 56345 transitions. [2023-12-15 20:01:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-15 20:01:40,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:40,727 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:40,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:01:40,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:40,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 734631750, now seen corresponding path program 1 times [2023-12-15 20:01:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405809485] [2023-12-15 20:01:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:40,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:40,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494539349] [2023-12-15 20:01:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:40,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:40,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:40,992 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:41,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:01:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:41,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:01:41,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:42,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405809485] [2023-12-15 20:01:42,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494539349] [2023-12-15 20:01:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494539349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:01:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396544335] [2023-12-15 20:01:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:42,114 INFO L87 Difference]: Start difference. First operand 31284 states and 56345 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:43,145 INFO L93 Difference]: Finished difference Result 62567 states and 112689 transitions. [2023-12-15 20:01:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:43,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 655 [2023-12-15 20:01:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:43,216 INFO L225 Difference]: With dead ends: 62567 [2023-12-15 20:01:43,216 INFO L226 Difference]: Without dead ends: 31284 [2023-12-15 20:01:43,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:43,254 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:43,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 561 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31284 states. [2023-12-15 20:01:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31284 to 31284. [2023-12-15 20:01:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31284 states, 28286 states have (on average 1.7668104362582195) internal successors, (49976), 28355 states have internal predecessors, (49976), 2874 states have call successors, (2874), 123 states have call predecessors, (2874), 123 states have return successors, (2874), 2805 states have call predecessors, (2874), 2874 states have call successors, (2874) [2023-12-15 20:01:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31284 states to 31284 states and 55724 transitions. [2023-12-15 20:01:44,616 INFO L78 Accepts]: Start accepts. Automaton has 31284 states and 55724 transitions. Word has length 655 [2023-12-15 20:01:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:44,617 INFO L495 AbstractCegarLoop]: Abstraction has 31284 states and 55724 transitions. [2023-12-15 20:01:44,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31284 states and 55724 transitions. [2023-12-15 20:01:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-15 20:01:44,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:44,650 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:44,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:44,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:44,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1857214522, now seen corresponding path program 1 times [2023-12-15 20:01:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077959858] [2023-12-15 20:01:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:44,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:44,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947038219] [2023-12-15 20:01:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:44,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:44,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:44,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:44,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:01:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:45,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:01:45,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 5088 proven. 42 refuted. 0 times theorem prover too weak. 15070 trivial. 0 not checked. [2023-12-15 20:01:46,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:01:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 258 proven. 42 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2023-12-15 20:01:46,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:46,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077959858] [2023-12-15 20:01:46,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947038219] [2023-12-15 20:01:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947038219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:01:46,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:01:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-15 20:01:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275280664] [2023-12-15 20:01:46,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:01:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 20:01:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 20:01:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:01:46,993 INFO L87 Difference]: Start difference. First operand 31284 states and 55724 transitions. Second operand has 15 states, 15 states have (on average 17.933333333333334) internal successors, (269), 15 states have internal predecessors, (269), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-15 20:01:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:50,410 INFO L93 Difference]: Finished difference Result 98841 states and 176780 transitions. [2023-12-15 20:01:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-15 20:01:50,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.933333333333334) internal successors, (269), 15 states have internal predecessors, (269), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) Word has length 655 [2023-12-15 20:01:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:50,573 INFO L225 Difference]: With dead ends: 98841 [2023-12-15 20:01:50,573 INFO L226 Difference]: Without dead ends: 67558 [2023-12-15 20:01:50,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1299 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=660, Invalid=1790, Unknown=0, NotChecked=0, Total=2450 [2023-12-15 20:01:50,624 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2916 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:50,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 3163 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 20:01:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67558 states. [2023-12-15 20:01:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67558 to 32421. [2023-12-15 20:01:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32421 states, 29285 states have (on average 1.7369643162028343) internal successors, (50867), 29354 states have internal predecessors, (50867), 2988 states have call successors, (2988), 147 states have call predecessors, (2988), 147 states have return successors, (2988), 2919 states have call predecessors, (2988), 2988 states have call successors, (2988) [2023-12-15 20:01:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32421 states to 32421 states and 56843 transitions. [2023-12-15 20:01:52,363 INFO L78 Accepts]: Start accepts. Automaton has 32421 states and 56843 transitions. Word has length 655 [2023-12-15 20:01:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:52,364 INFO L495 AbstractCegarLoop]: Abstraction has 32421 states and 56843 transitions. [2023-12-15 20:01:52,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.933333333333334) internal successors, (269), 15 states have internal predecessors, (269), 4 states have call successors, (202), 3 states have call predecessors, (202), 5 states have return successors, (202), 4 states have call predecessors, (202), 4 states have call successors, (202) [2023-12-15 20:01:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand 32421 states and 56843 transitions. [2023-12-15 20:01:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-15 20:01:52,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:52,396 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:52,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:52,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:01:52,606 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:52,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2045573830, now seen corresponding path program 1 times [2023-12-15 20:01:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:52,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951449633] [2023-12-15 20:01:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:52,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886795252] [2023-12-15 20:01:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:52,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:52,658 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:01:52,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:01:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:53,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:01:53,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:53,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:01:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951449633] [2023-12-15 20:01:53,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886795252] [2023-12-15 20:01:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886795252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:01:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:01:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:01:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576152439] [2023-12-15 20:01:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:53,219 INFO L87 Difference]: Start difference. First operand 32421 states and 56843 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:54,150 INFO L93 Difference]: Finished difference Result 64967 states and 113919 transitions. [2023-12-15 20:01:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 655 [2023-12-15 20:01:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:54,221 INFO L225 Difference]: With dead ends: 64967 [2023-12-15 20:01:54,221 INFO L226 Difference]: Without dead ends: 32547 [2023-12-15 20:01:54,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:01:54,258 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 10 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:54,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1127 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:01:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32547 states. [2023-12-15 20:01:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32547 to 32439. [2023-12-15 20:01:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32439 states, 29303 states have (on average 1.7365116199706514) internal successors, (50885), 29372 states have internal predecessors, (50885), 2988 states have call successors, (2988), 147 states have call predecessors, (2988), 147 states have return successors, (2988), 2919 states have call predecessors, (2988), 2988 states have call successors, (2988) [2023-12-15 20:01:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32439 states to 32439 states and 56861 transitions. [2023-12-15 20:01:55,593 INFO L78 Accepts]: Start accepts. Automaton has 32439 states and 56861 transitions. Word has length 655 [2023-12-15 20:01:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:01:55,594 INFO L495 AbstractCegarLoop]: Abstraction has 32439 states and 56861 transitions. [2023-12-15 20:01:55,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 32439 states and 56861 transitions. [2023-12-15 20:01:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-12-15 20:01:55,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:01:55,623 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:01:55,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:01:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:01:55,831 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:01:55,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:01:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash -268727137, now seen corresponding path program 1 times [2023-12-15 20:01:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:01:55,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447509390] [2023-12-15 20:01:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:01:55,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:01:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456662424] [2023-12-15 20:01:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:01:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:01:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:01:55,883 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) [2023-12-15 20:01:55,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 20:01:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:01:56,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:01:56,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:01:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10200 proven. 150 refuted. 0 times theorem prover too weak. 9850 trivial. 0 not checked. [2023-12-15 20:01:57,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:01:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:01:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:01:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447509390] [2023-12-15 20:01:57,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:01:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456662424] [2023-12-15 20:01:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456662424] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:01:57,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:01:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-15 20:01:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282136778] [2023-12-15 20:01:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:01:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:01:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:01:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:01:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:01:57,331 INFO L87 Difference]: Start difference. First operand 32439 states and 56861 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:01:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:01:59,368 INFO L93 Difference]: Finished difference Result 94696 states and 165904 transitions. [2023-12-15 20:01:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:01:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Word has length 656 [2023-12-15 20:01:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:01:59,481 INFO L225 Difference]: With dead ends: 94696 [2023-12-15 20:01:59,481 INFO L226 Difference]: Without dead ends: 62258 [2023-12-15 20:01:59,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:01:59,523 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 327 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:01:59,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1075 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:01:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62258 states. [2023-12-15 20:02:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62258 to 62232. [2023-12-15 20:02:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62232 states, 56480 states have (on average 1.7300814447592068) internal successors, (97715), 56621 states have internal predecessors, (97715), 5508 states have call successors, (5508), 243 states have call predecessors, (5508), 243 states have return successors, (5508), 5367 states have call predecessors, (5508), 5508 states have call successors, (5508) [2023-12-15 20:02:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62232 states to 62232 states and 108731 transitions. [2023-12-15 20:02:01,709 INFO L78 Accepts]: Start accepts. Automaton has 62232 states and 108731 transitions. Word has length 656 [2023-12-15 20:02:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:02:01,710 INFO L495 AbstractCegarLoop]: Abstraction has 62232 states and 108731 transitions. [2023-12-15 20:02:01,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) [2023-12-15 20:02:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 62232 states and 108731 transitions. [2023-12-15 20:02:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-12-15 20:02:01,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:02:01,760 INFO L195 NwaCegarLoop]: trace histogram [101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:01,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:01,968 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 [2023-12-15 20:02:01,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:02:01,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:02:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1523553561, now seen corresponding path program 1 times [2023-12-15 20:02:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:02:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883565498] [2023-12-15 20:02:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:02:02,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:02:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937095135] [2023-12-15 20:02:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:02:02,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:02:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:02:02,045 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) [2023-12-15 20:02:02,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 20:02:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:02:02,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:02:02,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:02:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2023-12-15 20:02:02,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:02:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:02:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883565498] [2023-12-15 20:02:02,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:02:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937095135] [2023-12-15 20:02:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937095135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:02:02,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:02:02,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:02:02,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053674003] [2023-12-15 20:02:02,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:02:02,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:02:02,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:02:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:02:02,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:02:02,821 INFO L87 Difference]: Start difference. First operand 62232 states and 108731 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (101), 1 states have call predecessors, (101), 1 states have return successors, (101), 1 states have call predecessors, (101), 1 states have call successors, (101) Received shutdown request... [2023-12-15 20:02:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:02:06,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:02:06,827 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 1231 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:02:06,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 2235 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:02:06,828 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:02:06,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:02:06,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:02:06,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 20:02:07,037 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 [2023-12-15 20:02:07,038 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (62232states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (214712 states constructed, input type IntersectNwa). [2023-12-15 20:02:07,043 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:02:07,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:02:07,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:02:07 BoogieIcfgContainer [2023-12-15 20:02:07,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:02:07,048 INFO L158 Benchmark]: Toolchain (without parser) took 50263.06ms. Allocated memory was 309.3MB in the beginning and 5.1GB in the end (delta: 4.8GB). Free memory was 272.0MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 20:02:07,048 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:02:07,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.67ms. Allocated memory is still 309.3MB. Free memory was 272.0MB in the beginning and 240.1MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:02:07,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.43ms. Allocated memory is still 309.3MB. Free memory was 240.1MB in the beginning and 227.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 20:02:07,050 INFO L158 Benchmark]: Boogie Preprocessor took 130.99ms. Allocated memory is still 309.3MB. Free memory was 227.0MB in the beginning and 213.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 20:02:07,050 INFO L158 Benchmark]: RCFGBuilder took 1284.08ms. Allocated memory is still 309.3MB. Free memory was 213.3MB in the beginning and 207.9MB in the end (delta: 5.4MB). Peak memory consumption was 50.5MB. Max. memory is 8.0GB. [2023-12-15 20:02:07,050 INFO L158 Benchmark]: TraceAbstraction took 48174.52ms. Allocated memory was 309.3MB in the beginning and 5.1GB in the end (delta: 4.8GB). Free memory was 207.4MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 20:02:07,054 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 564.67ms. Allocated memory is still 309.3MB. Free memory was 272.0MB in the beginning and 240.1MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 103.43ms. Allocated memory is still 309.3MB. Free memory was 240.1MB in the beginning and 227.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 130.99ms. Allocated memory is still 309.3MB. Free memory was 227.0MB in the beginning and 213.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1284.08ms. Allocated memory is still 309.3MB. Free memory was 213.3MB in the beginning and 207.9MB in the end (delta: 5.4MB). Peak memory consumption was 50.5MB. Max. memory is 8.0GB. * TraceAbstraction took 48174.52ms. Allocated memory was 309.3MB in the beginning and 5.1GB in the end (delta: 4.8GB). Free memory was 207.4MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 1.7GB. 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 (62232states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (214712 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 331 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.1s, OverallIterations: 18, TraceHistogramMax: 101, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11131 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10977 mSDsluCounter, 27774 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15265 mSDsCounter, 1891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2890 IncrementalHoareTripleChecker+Invalid, 4781 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1891 mSolverCounterUnsat, 12509 mSDtfsCounter, 2890 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13773 GetRequests, 13681 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62232occurred in iteration=17, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 40391 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 12427 NumberOfCodeBlocks, 12427 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 13719 ConstructedInterpolants, 0 QuantifiedInterpolants, 23417 SizeOfPredicates, 30 NumberOfNonLiveVariables, 27054 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 21 InterpolantComputations, 16 PerfectInterpolantSequences, 423894/424200 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