/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:48:40,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:48:40,471 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 19:48:40,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:48:40,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:48:40,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:48:40,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:48:40,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:48:40,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:48:40,500 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:48:40,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:48:40,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:48:40,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:48:40,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:48:40,502 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:48:40,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:48:40,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:48:40,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:48:40,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:48:40,504 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:48:40,504 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:48:40,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:48:40,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:48:40,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:48:40,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:48:40,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:48:40,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:48:40,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:48:40,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:48:40,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:48:40,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:48:40,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:48:40,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:48:40,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:48:40,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:48:40,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:48:40,718 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:48:40,718 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:48:40,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-34.i [2023-12-15 19:48:41,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:48:42,037 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:48:42,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-34.i [2023-12-15 19:48:42,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad140bbe/59c2e8dd4a5342d7941c188ce9b2ff50/FLAG4ebba3466 [2023-12-15 19:48:42,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad140bbe/59c2e8dd4a5342d7941c188ce9b2ff50 [2023-12-15 19:48:42,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:48:42,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:48:42,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:48:42,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:48:42,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:48:42,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a95886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42, skipping insertion in model container [2023-12-15 19:48:42,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:48:42,197 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-34.i[916,929] [2023-12-15 19:48:42,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:48:42,333 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:48:42,345 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-34.i[916,929] [2023-12-15 19:48:42,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:48:42,407 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:48:42,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42 WrapperNode [2023-12-15 19:48:42,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:48:42,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:48:42,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:48:42,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:48:42,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,482 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 542 [2023-12-15 19:48:42,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:48:42,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:48:42,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:48:42,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:48:42,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,527 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 19:48:42,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:48:42,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:48:42,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:48:42,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:48:42,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (1/1) ... [2023-12-15 19:48:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:48:42,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:42,583 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 19:48:42,604 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 19:48:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:48:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:48:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:48:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:48:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:48:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:48:42,725 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:48:42,727 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:48:43,343 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:48:43,397 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:48:43,398 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:48:43,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:48:43 BoogieIcfgContainer [2023-12-15 19:48:43,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:48:43,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:48:43,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:48:43,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:48:43,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:48:42" (1/3) ... [2023-12-15 19:48:43,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4cd9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:48:43, skipping insertion in model container [2023-12-15 19:48:43,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:48:42" (2/3) ... [2023-12-15 19:48:43,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4cd9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:48:43, skipping insertion in model container [2023-12-15 19:48:43,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:48:43" (3/3) ... [2023-12-15 19:48:43,404 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-34.i [2023-12-15 19:48:43,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:48:43,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:48:43,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:48:43,462 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;@d3d0e68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:48:43,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:48:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 144 states have internal predecessors, (232), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-15 19:48:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-15 19:48:43,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:43,487 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:43,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -750474709, now seen corresponding path program 1 times [2023-12-15 19:48:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781568755] [2023-12-15 19:48:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:43,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781568755] [2023-12-15 19:48:43,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:48:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710531217] [2023-12-15 19:48:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:43,791 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 19:48:43,794 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 19:48:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:44,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:48:44,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2023-12-15 19:48:44,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710531217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:44,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:48:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693851075] [2023-12-15 19:48:44,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:44,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:48:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:48:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:48:44,152 INFO L87 Difference]: Start difference. First operand has 217 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 144 states have internal predecessors, (232), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-15 19:48:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:44,238 INFO L93 Difference]: Finished difference Result 431 states and 817 transitions. [2023-12-15 19:48:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:48:44,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 441 [2023-12-15 19:48:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:44,250 INFO L225 Difference]: With dead ends: 431 [2023-12-15 19:48:44,250 INFO L226 Difference]: Without dead ends: 215 [2023-12-15 19:48:44,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 440 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 19:48:44,262 INFO L413 NwaCegarLoop]: 365 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, 365 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 19:48:44,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-15 19:48:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-12-15 19:48:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 142 states have (on average 1.591549295774648) internal successors, (226), 142 states have internal predecessors, (226), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-15 19:48:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 368 transitions. [2023-12-15 19:48:44,316 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 368 transitions. Word has length 441 [2023-12-15 19:48:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:44,317 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 368 transitions. [2023-12-15 19:48:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-15 19:48:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 368 transitions. [2023-12-15 19:48:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-15 19:48:44,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:44,324 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:44,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:48:44,530 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 19:48:44,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:44,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1561902997, now seen corresponding path program 1 times [2023-12-15 19:48:44,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218846322] [2023-12-15 19:48:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:44,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:44,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488337752] [2023-12-15 19:48:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:44,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:44,699 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 19:48:44,740 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 19:48:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:44,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:44,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:48:44,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218846322] [2023-12-15 19:48:44,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488337752] [2023-12-15 19:48:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488337752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:44,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41113040] [2023-12-15 19:48:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:44,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:45,000 INFO L87 Difference]: Start difference. First operand 215 states and 368 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:45,046 INFO L93 Difference]: Finished difference Result 430 states and 737 transitions. [2023-12-15 19:48:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 441 [2023-12-15 19:48:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:45,053 INFO L225 Difference]: With dead ends: 430 [2023-12-15 19:48:45,053 INFO L226 Difference]: Without dead ends: 216 [2023-12-15 19:48:45,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 19:48:45,055 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 721 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-15 19:48:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-15 19:48:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 143 states have (on average 1.5874125874125875) internal successors, (227), 143 states have internal predecessors, (227), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-15 19:48:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 369 transitions. [2023-12-15 19:48:45,075 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 369 transitions. Word has length 441 [2023-12-15 19:48:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:45,077 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 369 transitions. [2023-12-15 19:48:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 369 transitions. [2023-12-15 19:48:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-15 19:48:45,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:45,082 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:45,092 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 19:48:45,288 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 19:48:45,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:45,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1478237875, now seen corresponding path program 1 times [2023-12-15 19:48:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:45,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63769747] [2023-12-15 19:48:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:45,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495003124] [2023-12-15 19:48:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:45,365 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 19:48:45,379 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 19:48:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:45,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:45,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:48:45,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63769747] [2023-12-15 19:48:45,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495003124] [2023-12-15 19:48:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495003124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:45,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:45,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185494321] [2023-12-15 19:48:45,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:45,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:45,626 INFO L87 Difference]: Start difference. First operand 216 states and 369 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:45,663 INFO L93 Difference]: Finished difference Result 562 states and 964 transitions. [2023-12-15 19:48:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:45,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 441 [2023-12-15 19:48:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:45,666 INFO L225 Difference]: With dead ends: 562 [2023-12-15 19:48:45,666 INFO L226 Difference]: Without dead ends: 347 [2023-12-15 19:48:45,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 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 19:48:45,668 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 223 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:45,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 779 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-15 19:48:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 344. [2023-12-15 19:48:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 251 states have (on average 1.6414342629482073) internal successors, (412), 252 states have internal predecessors, (412), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-15 19:48:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 592 transitions. [2023-12-15 19:48:45,690 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 592 transitions. Word has length 441 [2023-12-15 19:48:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:45,691 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 592 transitions. [2023-12-15 19:48:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 592 transitions. [2023-12-15 19:48:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-15 19:48:45,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:45,694 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:45,703 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 19:48:45,903 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 19:48:45,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -367129291, now seen corresponding path program 1 times [2023-12-15 19:48:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061594265] [2023-12-15 19:48:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:45,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202945759] [2023-12-15 19:48:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:45,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:45,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:45,957 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 19:48:45,957 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 19:48:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:46,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:48:46,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:48:46,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:46,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061594265] [2023-12-15 19:48:46,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202945759] [2023-12-15 19:48:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202945759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:46,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:48:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762203936] [2023-12-15 19:48:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:48:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:48:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:48:46,568 INFO L87 Difference]: Start difference. First operand 344 states and 592 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:47,013 INFO L93 Difference]: Finished difference Result 1031 states and 1771 transitions. [2023-12-15 19:48:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:48:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 441 [2023-12-15 19:48:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:47,027 INFO L225 Difference]: With dead ends: 1031 [2023-12-15 19:48:47,027 INFO L226 Difference]: Without dead ends: 688 [2023-12-15 19:48:47,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:47,029 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 374 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:47,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1468 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:48:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-15 19:48:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 348. [2023-12-15 19:48:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 255 states have (on average 1.6313725490196078) internal successors, (416), 256 states have internal predecessors, (416), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-15 19:48:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 596 transitions. [2023-12-15 19:48:47,084 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 596 transitions. Word has length 441 [2023-12-15 19:48:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:47,100 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 596 transitions. [2023-12-15 19:48:47,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 596 transitions. [2023-12-15 19:48:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:47,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:47,103 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:47,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:48:47,310 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 19:48:47,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:47,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash 949483763, now seen corresponding path program 1 times [2023-12-15 19:48:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:47,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425200661] [2023-12-15 19:48:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:47,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012817414] [2023-12-15 19:48:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:47,341 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 19:48:47,408 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 19:48:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:47,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:47,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4858 proven. 84 refuted. 0 times theorem prover too weak. 4998 trivial. 0 not checked. [2023-12-15 19:48:47,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 126 proven. 84 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:48:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425200661] [2023-12-15 19:48:48,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012817414] [2023-12-15 19:48:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012817414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:48,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654041241] [2023-12-15 19:48:48,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:48,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:48,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:48,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:48,094 INFO L87 Difference]: Start difference. First operand 348 states and 596 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 19:48:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:48,563 INFO L93 Difference]: Finished difference Result 766 states and 1299 transitions. [2023-12-15 19:48:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 442 [2023-12-15 19:48:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:48,566 INFO L225 Difference]: With dead ends: 766 [2023-12-15 19:48:48,566 INFO L226 Difference]: Without dead ends: 419 [2023-12-15 19:48:48,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 876 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:48:48,568 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 586 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:48,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 835 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:48:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-15 19:48:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 412. [2023-12-15 19:48:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 276 states have (on average 1.5615942028985508) internal successors, (431), 278 states have internal predecessors, (431), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 19:48:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 695 transitions. [2023-12-15 19:48:48,611 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 695 transitions. Word has length 442 [2023-12-15 19:48:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:48,611 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 695 transitions. [2023-12-15 19:48:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 19:48:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 695 transitions. [2023-12-15 19:48:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:48,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:48,627 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:48,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 19:48:48,827 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 19:48:48,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:48,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1350189307, now seen corresponding path program 1 times [2023-12-15 19:48:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:48,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122002865] [2023-12-15 19:48:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:48,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747304583] [2023-12-15 19:48:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:48,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:48,896 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 19:48:48,936 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 19:48:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:49,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:48:49,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:48:49,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:49,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122002865] [2023-12-15 19:48:49,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747304583] [2023-12-15 19:48:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747304583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:49,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:48:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482299631] [2023-12-15 19:48:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:49,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:48:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:48:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:48:49,146 INFO L87 Difference]: Start difference. First operand 412 states and 695 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:49,208 INFO L93 Difference]: Finished difference Result 762 states and 1285 transitions. [2023-12-15 19:48:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:48:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 442 [2023-12-15 19:48:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:49,211 INFO L225 Difference]: With dead ends: 762 [2023-12-15 19:48:49,211 INFO L226 Difference]: Without dead ends: 415 [2023-12-15 19:48:49,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:48:49,213 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 202 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:49,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-15 19:48:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2023-12-15 19:48:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 276 states have (on average 1.5579710144927537) internal successors, (430), 278 states have internal predecessors, (430), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 19:48:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 694 transitions. [2023-12-15 19:48:49,248 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 694 transitions. Word has length 442 [2023-12-15 19:48:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:49,248 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 694 transitions. [2023-12-15 19:48:49,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 694 transitions. [2023-12-15 19:48:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:49,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:49,251 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:49,275 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 19:48:49,460 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 19:48:49,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:49,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash 672608763, now seen corresponding path program 1 times [2023-12-15 19:48:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547589761] [2023-12-15 19:48:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:49,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110617215] [2023-12-15 19:48:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:49,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:49,498 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 19:48:49,546 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 19:48:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:49,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:49,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5028 proven. 99 refuted. 0 times theorem prover too weak. 4813 trivial. 0 not checked. [2023-12-15 19:48:49,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 111 proven. 99 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:48:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:50,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547589761] [2023-12-15 19:48:50,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:50,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110617215] [2023-12-15 19:48:50,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110617215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:50,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:50,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559368250] [2023-12-15 19:48:50,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:50,110 INFO L87 Difference]: Start difference. First operand 412 states and 694 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 19:48:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:50,359 INFO L93 Difference]: Finished difference Result 777 states and 1297 transitions. [2023-12-15 19:48:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 442 [2023-12-15 19:48:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:50,375 INFO L225 Difference]: With dead ends: 777 [2023-12-15 19:48:50,375 INFO L226 Difference]: Without dead ends: 430 [2023-12-15 19:48:50,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 876 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 19:48:50,376 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 424 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:50,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 710 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:48:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-15 19:48:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 420. [2023-12-15 19:48:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 282 states have (on average 1.5390070921985815) internal successors, (434), 284 states have internal predecessors, (434), 132 states have call successors, (132), 5 states have call predecessors, (132), 5 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 19:48:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 698 transitions. [2023-12-15 19:48:50,447 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 698 transitions. Word has length 442 [2023-12-15 19:48:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:50,448 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 698 transitions. [2023-12-15 19:48:50,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-15 19:48:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 698 transitions. [2023-12-15 19:48:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:50,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:50,450 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:50,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 19:48:50,657 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 19:48:50,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:50,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1096255485, now seen corresponding path program 1 times [2023-12-15 19:48:50,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:50,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020761682] [2023-12-15 19:48:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:50,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009446766] [2023-12-15 19:48:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:50,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:50,691 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 19:48:50,716 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 19:48:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:50,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:50,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5040 proven. 105 refuted. 0 times theorem prover too weak. 4795 trivial. 0 not checked. [2023-12-15 19:48:51,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:48:51,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020761682] [2023-12-15 19:48:51,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009446766] [2023-12-15 19:48:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009446766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:51,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018689968] [2023-12-15 19:48:51,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:51,333 INFO L87 Difference]: Start difference. First operand 420 states and 698 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-15 19:48:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:51,672 INFO L93 Difference]: Finished difference Result 793 states and 1306 transitions. [2023-12-15 19:48:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:51,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 442 [2023-12-15 19:48:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:51,675 INFO L225 Difference]: With dead ends: 793 [2023-12-15 19:48:51,675 INFO L226 Difference]: Without dead ends: 442 [2023-12-15 19:48:51,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 876 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 19:48:51,676 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 576 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:51,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 705 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:48:51,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-15 19:48:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 428. [2023-12-15 19:48:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 290 states have internal predecessors, (438), 132 states have call successors, (132), 7 states have call predecessors, (132), 7 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 19:48:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 702 transitions. [2023-12-15 19:48:51,714 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 702 transitions. Word has length 442 [2023-12-15 19:48:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:51,714 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 702 transitions. [2023-12-15 19:48:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-15 19:48:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 702 transitions. [2023-12-15 19:48:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:51,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:51,717 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:51,724 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 19:48:51,924 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 19:48:51,924 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:51,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1797855359, now seen corresponding path program 1 times [2023-12-15 19:48:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280534566] [2023-12-15 19:48:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:51,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449673585] [2023-12-15 19:48:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:51,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:51,961 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 19:48:51,963 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 19:48:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:52,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:48:52,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4984 proven. 93 refuted. 0 times theorem prover too weak. 4863 trivial. 0 not checked. [2023-12-15 19:48:52,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 117 proven. 93 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:48:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280534566] [2023-12-15 19:48:52,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449673585] [2023-12-15 19:48:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449673585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:52,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:48:52,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134574001] [2023-12-15 19:48:52,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:48:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:48:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:48:52,568 INFO L87 Difference]: Start difference. First operand 428 states and 702 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 19:48:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:52,835 INFO L93 Difference]: Finished difference Result 809 states and 1315 transitions. [2023-12-15 19:48:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 442 [2023-12-15 19:48:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:52,838 INFO L225 Difference]: With dead ends: 809 [2023-12-15 19:48:52,838 INFO L226 Difference]: Without dead ends: 454 [2023-12-15 19:48:52,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 876 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 19:48:52,840 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 387 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:52,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 699 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:48:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-15 19:48:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 436. [2023-12-15 19:48:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 294 states have (on average 1.5034013605442176) internal successors, (442), 296 states have internal predecessors, (442), 132 states have call successors, (132), 9 states have call predecessors, (132), 9 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 19:48:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 706 transitions. [2023-12-15 19:48:52,897 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 706 transitions. Word has length 442 [2023-12-15 19:48:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:52,898 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 706 transitions. [2023-12-15 19:48:52,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 19:48:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 706 transitions. [2023-12-15 19:48:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 19:48:52,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:52,900 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:52,907 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 19:48:53,106 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 19:48:53,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:53,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2016710077, now seen corresponding path program 1 times [2023-12-15 19:48:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613282532] [2023-12-15 19:48:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:53,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:53,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774454772] [2023-12-15 19:48:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:53,138 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 19:48:53,165 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 19:48:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:53,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:48:53,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:48:53,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:53,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613282532] [2023-12-15 19:48:53,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:53,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774454772] [2023-12-15 19:48:53,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774454772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:53,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636022461] [2023-12-15 19:48:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:53,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:48:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:48:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:48:53,736 INFO L87 Difference]: Start difference. First operand 436 states and 706 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:53,941 INFO L93 Difference]: Finished difference Result 1210 states and 1973 transitions. [2023-12-15 19:48:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:48:53,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 442 [2023-12-15 19:48:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:53,945 INFO L225 Difference]: With dead ends: 1210 [2023-12-15 19:48:53,945 INFO L226 Difference]: Without dead ends: 851 [2023-12-15 19:48:53,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 439 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 19:48:53,946 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 354 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:53,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1096 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:48:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-15 19:48:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 797. [2023-12-15 19:48:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 559 states have (on average 1.5259391771019677) internal successors, (853), 562 states have internal predecessors, (853), 222 states have call successors, (222), 15 states have call predecessors, (222), 15 states have return successors, (222), 219 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-15 19:48:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1297 transitions. [2023-12-15 19:48:54,019 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1297 transitions. Word has length 442 [2023-12-15 19:48:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1297 transitions. [2023-12-15 19:48:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:48:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1297 transitions. [2023-12-15 19:48:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-15 19:48:54,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:54,022 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:54,044 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 19:48:54,228 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 19:48:54,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:54,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash 884114883, now seen corresponding path program 1 times [2023-12-15 19:48:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420348621] [2023-12-15 19:48:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:54,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018366563] [2023-12-15 19:48:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:54,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:54,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:54,260 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 19:48:54,276 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 19:48:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:54,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:48:54,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 2688 proven. 177 refuted. 0 times theorem prover too weak. 7075 trivial. 0 not checked. [2023-12-15 19:48:54,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 33 proven. 177 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2023-12-15 19:48:55,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420348621] [2023-12-15 19:48:55,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018366563] [2023-12-15 19:48:55,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018366563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:55,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:55,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-15 19:48:55,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480703007] [2023-12-15 19:48:55,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:55,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:48:55,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:48:55,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:48:55,143 INFO L87 Difference]: Start difference. First operand 797 states and 1297 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 19:48:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:55,796 INFO L93 Difference]: Finished difference Result 1208 states and 1933 transitions. [2023-12-15 19:48:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:48:55,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 443 [2023-12-15 19:48:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:55,801 INFO L225 Difference]: With dead ends: 1208 [2023-12-15 19:48:55,801 INFO L226 Difference]: Without dead ends: 847 [2023-12-15 19:48:55,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 877 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:48:55,802 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 424 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:55,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1840 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:48:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-15 19:48:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 817. [2023-12-15 19:48:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 574 states have (on average 1.505226480836237) internal successors, (864), 577 states have internal predecessors, (864), 222 states have call successors, (222), 20 states have call predecessors, (222), 20 states have return successors, (222), 219 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-15 19:48:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1308 transitions. [2023-12-15 19:48:55,849 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1308 transitions. Word has length 443 [2023-12-15 19:48:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:55,850 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1308 transitions. [2023-12-15 19:48:55,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-15 19:48:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1308 transitions. [2023-12-15 19:48:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-15 19:48:55,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:55,852 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:55,860 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 19:48:56,058 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 19:48:56,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:56,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash -395748795, now seen corresponding path program 1 times [2023-12-15 19:48:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:56,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065498814] [2023-12-15 19:48:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:56,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:56,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277317132] [2023-12-15 19:48:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:56,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:56,088 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 19:48:56,116 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 19:48:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:56,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-15 19:48:56,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:49:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 1779 proven. 567 refuted. 0 times theorem prover too weak. 7594 trivial. 0 not checked. [2023-12-15 19:49:02,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:49:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-12-15 19:49:12,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:49:12,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065498814] [2023-12-15 19:49:12,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:49:12,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277317132] [2023-12-15 19:49:12,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277317132] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:49:12,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:49:12,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-15 19:49:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102629923] [2023-12-15 19:49:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:49:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:49:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:49:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:49:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-12-15 19:49:12,039 INFO L87 Difference]: Start difference. First operand 817 states and 1308 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:49:22,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-15 19:49:30,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-15 19:49:45,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-15 19:49:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:49:47,644 INFO L93 Difference]: Finished difference Result 1783 states and 2832 transitions. [2023-12-15 19:49:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 19:49:47,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 443 [2023-12-15 19:49:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:49:47,648 INFO L225 Difference]: With dead ends: 1783 [2023-12-15 19:49:47,648 INFO L226 Difference]: Without dead ends: 1047 [2023-12-15 19:49:47,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 19:49:47,650 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 295 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:49:47,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1996 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 2 Unknown, 0 Unchecked, 23.2s Time] [2023-12-15 19:49:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-12-15 19:49:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 885. [2023-12-15 19:49:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 638 states have (on average 1.4921630094043887) internal successors, (952), 641 states have internal predecessors, (952), 222 states have call successors, (222), 24 states have call predecessors, (222), 24 states have return successors, (222), 219 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-15 19:49:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1396 transitions. [2023-12-15 19:49:47,715 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1396 transitions. Word has length 443 [2023-12-15 19:49:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:49:47,715 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1396 transitions. [2023-12-15 19:49:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-12-15 19:49:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1396 transitions. [2023-12-15 19:49:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-15 19:49:47,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:49:47,718 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:47,735 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 19:49:47,926 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 19:49:47,927 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:49:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:49:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -338490493, now seen corresponding path program 1 times [2023-12-15 19:49:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:49:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649709889] [2023-12-15 19:49:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:49:47,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:49:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752839549] [2023-12-15 19:49:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:49:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:49:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:49:47,956 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 19:49:47,968 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 19:49:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:49:48,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:49:48,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:49:49,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:49:49,287 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 19:49:49,291 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 19:49:49,320 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:49:49,491 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 19:49:49,492 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 444 with TraceHistMax 71,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-2-2-1 context. [2023-12-15 19:49:49,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:49:49,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:49:49,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:49:49 BoogieIcfgContainer [2023-12-15 19:49:49,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:49:49,499 INFO L158 Benchmark]: Toolchain (without parser) took 67438.34ms. Allocated memory was 172.0MB in the beginning and 722.5MB in the end (delta: 550.5MB). Free memory was 107.4MB in the beginning and 383.5MB in the end (delta: -276.1MB). Peak memory consumption was 275.9MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,499 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory was 122.2MB in the beginning and 122.0MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:49:49,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.20ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 107.0MB in the beginning and 200.3MB in the end (delta: -93.3MB). Peak memory consumption was 24.9MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.93ms. Allocated memory is still 237.0MB. Free memory was 199.8MB in the beginning and 191.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,505 INFO L158 Benchmark]: Boogie Preprocessor took 76.59ms. Allocated memory is still 237.0MB. Free memory was 191.4MB in the beginning and 180.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,506 INFO L158 Benchmark]: RCFGBuilder took 837.75ms. Allocated memory is still 237.0MB. Free memory was 180.4MB in the beginning and 190.3MB in the end (delta: -9.8MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,506 INFO L158 Benchmark]: TraceAbstraction took 66099.31ms. Allocated memory was 237.0MB in the beginning and 722.5MB in the end (delta: 485.5MB). Free memory was 189.7MB in the beginning and 383.5MB in the end (delta: -193.7MB). Peak memory consumption was 292.3MB. Max. memory is 8.0GB. [2023-12-15 19:49:49,507 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 172.0MB. Free memory was 122.2MB in the beginning and 122.0MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 345.20ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 107.0MB in the beginning and 200.3MB in the end (delta: -93.3MB). Peak memory consumption was 24.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.93ms. Allocated memory is still 237.0MB. Free memory was 199.8MB in the beginning and 191.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.59ms. Allocated memory is still 237.0MB. Free memory was 191.4MB in the beginning and 180.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 837.75ms. Allocated memory is still 237.0MB. Free memory was 180.4MB in the beginning and 190.3MB in the end (delta: -9.8MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * TraceAbstraction took 66099.31ms. Allocated memory was 237.0MB in the beginning and 722.5MB in the end (delta: 485.5MB). Free memory was 189.7MB in the beginning and 383.5MB in the end (delta: -193.7MB). Peak memory consumption was 292.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 444 with TraceHistMax 71,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.1s, OverallIterations: 13, TraceHistogramMax: 71, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 4007 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3845 mSDsluCounter, 12421 SdHoareTripleChecker+Invalid, 24.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7608 mSDsCounter, 941 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3177 IncrementalHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 941 mSolverCounterUnsat, 4813 mSDtfsCounter, 3177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7976 GetRequests, 7872 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=885occurred in iteration=12, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 641 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 5743 NumberOfCodeBlocks, 5743 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 7938 ConstructedInterpolants, 7 QuantifiedInterpolants, 28081 SizeOfPredicates, 43 NumberOfNonLiveVariables, 12002 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 177237/178920 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