/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:57:59,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:57:59,473 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 19:57:59,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:57:59,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:57:59,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:57:59,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:57:59,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:57:59,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:57:59,503 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:57:59,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:57:59,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:57:59,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:57:59,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:57:59,505 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:57:59,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:57:59,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:57:59,506 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:57:59,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:57:59,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:57:59,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:57:59,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:57:59,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:57:59,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:57:59,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:57:59,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:57:59,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:57:59,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:57:59,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:57:59,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:57:59,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:57:59,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:57:59,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:57:59,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:57:59,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:57:59,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:57:59,704 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:57:59,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-15 19:58:00,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:58:00,897 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:58:00,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-15 19:58:00,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9380c3b9/d0a8bcf0e9ba4ba182112790e76aff93/FLAG5c4356e74 [2023-12-15 19:58:00,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9380c3b9/d0a8bcf0e9ba4ba182112790e76aff93 [2023-12-15 19:58:00,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:58:00,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:58:00,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:58:00,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:58:00,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:58:00,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:58:00" (1/1) ... [2023-12-15 19:58:00,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280dcd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:00, skipping insertion in model container [2023-12-15 19:58:00,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:58:00" (1/1) ... [2023-12-15 19:58:00,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:58:01,063 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-12-15 19:58:01,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:58:01,219 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:58:01,226 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-12-15 19:58:01,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:58:01,296 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:58:01,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01 WrapperNode [2023-12-15 19:58:01,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:58:01,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:58:01,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:58:01,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:58:01,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,396 INFO L138 Inliner]: procedures = 26, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 868 [2023-12-15 19:58:01,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:58:01,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:58:01,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:58:01,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:58:01,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,456 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 19:58:01,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:58:01,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:58:01,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:58:01,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:58:01,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (1/1) ... [2023-12-15 19:58:01,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:58:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:01,529 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 19:58:01,540 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 19:58:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:58:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:58:01,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:58:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:58:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:58:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:58:01,677 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:58:01,679 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:58:02,423 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:58:02,478 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:58:02,478 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:58:02,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:58:02 BoogieIcfgContainer [2023-12-15 19:58:02,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:58:02,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:58:02,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:58:02,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:58:02,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:58:00" (1/3) ... [2023-12-15 19:58:02,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fba0523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:58:02, skipping insertion in model container [2023-12-15 19:58:02,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:01" (2/3) ... [2023-12-15 19:58:02,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fba0523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:58:02, skipping insertion in model container [2023-12-15 19:58:02,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:58:02" (3/3) ... [2023-12-15 19:58:02,487 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-12-15 19:58:02,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:58:02,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:58:02,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:58:02,558 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;@16d40f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:58:02,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:58:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 19:58:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-15 19:58:02,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:02,607 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:02,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:02,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash -31867623, now seen corresponding path program 1 times [2023-12-15 19:58:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064465656] [2023-12-15 19:58:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064465656] [2023-12-15 19:58:02,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:58:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519619595] [2023-12-15 19:58:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:02,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:02,966 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 19:58:02,970 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 19:58:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:03,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:58:03,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 25538 trivial. 0 not checked. [2023-12-15 19:58:03,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519619595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:03,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:03,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:58:03,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229401927] [2023-12-15 19:58:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:03,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:58:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:58:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:58:03,528 INFO L87 Difference]: Start difference. First operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-15 19:58:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:03,602 INFO L93 Difference]: Finished difference Result 685 states and 1310 transitions. [2023-12-15 19:58:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:58:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) Word has length 726 [2023-12-15 19:58:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:03,618 INFO L225 Difference]: With dead ends: 685 [2023-12-15 19:58:03,618 INFO L226 Difference]: Without dead ends: 342 [2023-12-15 19:58:03,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 725 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 19:58:03,629 INFO L413 NwaCegarLoop]: 589 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, 589 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 19:58:03,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-15 19:58:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-12-15 19:58:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 226 states have (on average 1.6106194690265487) internal successors, (364), 226 states have internal predecessors, (364), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 19:58:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 592 transitions. [2023-12-15 19:58:03,716 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 592 transitions. Word has length 726 [2023-12-15 19:58:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:03,718 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 592 transitions. [2023-12-15 19:58:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-15 19:58:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 592 transitions. [2023-12-15 19:58:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-15 19:58:03,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:03,732 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:03,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:03,938 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 19:58:03,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:03,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2050886755, now seen corresponding path program 1 times [2023-12-15 19:58:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212406265] [2023-12-15 19:58:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:04,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822347928] [2023-12-15 19:58:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:04,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:04,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:04,071 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 19:58:04,075 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 19:58:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:04,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:04,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:04,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:04,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212406265] [2023-12-15 19:58:04,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822347928] [2023-12-15 19:58:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822347928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:04,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075734670] [2023-12-15 19:58:04,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:04,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:04,502 INFO L87 Difference]: Start difference. First operand 342 states and 592 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:04,570 INFO L93 Difference]: Finished difference Result 684 states and 1185 transitions. [2023-12-15 19:58:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:04,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 726 [2023-12-15 19:58:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:04,575 INFO L225 Difference]: With dead ends: 684 [2023-12-15 19:58:04,575 INFO L226 Difference]: Without dead ends: 343 [2023-12-15 19:58:04,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 724 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 19:58:04,577 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:04,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-15 19:58:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-12-15 19:58:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 227 states have (on average 1.6079295154185023) internal successors, (365), 227 states have internal predecessors, (365), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 19:58:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 593 transitions. [2023-12-15 19:58:04,595 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 593 transitions. Word has length 726 [2023-12-15 19:58:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:04,597 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 593 transitions. [2023-12-15 19:58:04,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 593 transitions. [2023-12-15 19:58:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-12-15 19:58:04,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:04,603 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:04,618 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 19:58:04,808 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 19:58:04,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:04,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1428924628, now seen corresponding path program 1 times [2023-12-15 19:58:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:04,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499478967] [2023-12-15 19:58:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:04,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:04,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620667760] [2023-12-15 19:58:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:04,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:04,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:04,868 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 19:58:04,880 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 19:58:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:05,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:05,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:05,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499478967] [2023-12-15 19:58:05,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620667760] [2023-12-15 19:58:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620667760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:05,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:05,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417671549] [2023-12-15 19:58:05,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:05,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:05,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:05,224 INFO L87 Difference]: Start difference. First operand 343 states and 593 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:05,300 INFO L93 Difference]: Finished difference Result 921 states and 1593 transitions. [2023-12-15 19:58:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 727 [2023-12-15 19:58:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:05,308 INFO L225 Difference]: With dead ends: 921 [2023-12-15 19:58:05,308 INFO L226 Difference]: Without dead ends: 579 [2023-12-15 19:58:05,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 725 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 19:58:05,311 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 397 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-12-15 19:58:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 576. [2023-12-15 19:58:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 386 states have (on average 1.61139896373057) internal successors, (622), 387 states have internal predecessors, (622), 187 states have call successors, (187), 2 states have call predecessors, (187), 2 states have return successors, (187), 186 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-15 19:58:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 996 transitions. [2023-12-15 19:58:05,384 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 996 transitions. Word has length 727 [2023-12-15 19:58:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:05,385 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 996 transitions. [2023-12-15 19:58:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 996 transitions. [2023-12-15 19:58:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-15 19:58:05,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:05,391 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:05,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 19:58:05,597 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 19:58:05,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:05,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1471251898, now seen corresponding path program 1 times [2023-12-15 19:58:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:05,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323645630] [2023-12-15 19:58:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:05,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386915487] [2023-12-15 19:58:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:05,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:05,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:05,666 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 19:58:05,669 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 19:58:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:05,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:05,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:06,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323645630] [2023-12-15 19:58:06,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386915487] [2023-12-15 19:58:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386915487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505366151] [2023-12-15 19:58:06,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:06,050 INFO L87 Difference]: Start difference. First operand 576 states and 996 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:06,097 INFO L93 Difference]: Finished difference Result 1158 states and 1996 transitions. [2023-12-15 19:58:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-15 19:58:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:06,101 INFO L225 Difference]: With dead ends: 1158 [2023-12-15 19:58:06,101 INFO L226 Difference]: Without dead ends: 583 [2023-12-15 19:58:06,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 19:58:06,103 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 371 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:06,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1188 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-15 19:58:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 431. [2023-12-15 19:58:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 314 states have (on average 1.6656050955414012) internal successors, (523), 314 states have internal predecessors, (523), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-15 19:58:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 751 transitions. [2023-12-15 19:58:06,123 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 751 transitions. Word has length 728 [2023-12-15 19:58:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 751 transitions. [2023-12-15 19:58:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 751 transitions. [2023-12-15 19:58:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-15 19:58:06,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:06,132 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:06,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:06,341 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 19:58:06,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:06,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash 57067770, now seen corresponding path program 1 times [2023-12-15 19:58:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567553784] [2023-12-15 19:58:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:06,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499947908] [2023-12-15 19:58:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:06,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:06,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:06,413 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 19:58:06,457 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 19:58:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:06,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:06,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:06,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567553784] [2023-12-15 19:58:06,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499947908] [2023-12-15 19:58:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499947908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:06,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081934299] [2023-12-15 19:58:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:06,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:06,822 INFO L87 Difference]: Start difference. First operand 431 states and 751 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:06,879 INFO L93 Difference]: Finished difference Result 1291 states and 2251 transitions. [2023-12-15 19:58:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:06,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-15 19:58:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:06,886 INFO L225 Difference]: With dead ends: 1291 [2023-12-15 19:58:06,886 INFO L226 Difference]: Without dead ends: 861 [2023-12-15 19:58:06,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 19:58:06,888 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 579 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:06,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1184 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-15 19:58:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 859. [2023-12-15 19:58:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 626 states have (on average 1.65814696485623) internal successors, (1038), 626 states have internal predecessors, (1038), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-15 19:58:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1494 transitions. [2023-12-15 19:58:06,945 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1494 transitions. Word has length 728 [2023-12-15 19:58:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:06,946 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1494 transitions. [2023-12-15 19:58:06,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1494 transitions. [2023-12-15 19:58:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-15 19:58:06,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:06,951 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:06,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:07,157 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 19:58:07,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:07,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -840325508, now seen corresponding path program 1 times [2023-12-15 19:58:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091085518] [2023-12-15 19:58:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:07,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021381744] [2023-12-15 19:58:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:07,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:07,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:07,213 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 19:58:07,240 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 19:58:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:07,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:07,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:07,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091085518] [2023-12-15 19:58:07,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021381744] [2023-12-15 19:58:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021381744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:07,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691245866] [2023-12-15 19:58:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:07,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:07,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:07,648 INFO L87 Difference]: Start difference. First operand 859 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:07,721 INFO L93 Difference]: Finished difference Result 2259 states and 3952 transitions. [2023-12-15 19:58:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:07,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-12-15 19:58:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:07,727 INFO L225 Difference]: With dead ends: 2259 [2023-12-15 19:58:07,727 INFO L226 Difference]: Without dead ends: 1401 [2023-12-15 19:58:07,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 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 19:58:07,731 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 308 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:07,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1147 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-15 19:58:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1397. [2023-12-15 19:58:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1094 states have (on average 1.696526508226691) internal successors, (1856), 1096 states have internal predecessors, (1856), 296 states have call successors, (296), 6 states have call predecessors, (296), 6 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-12-15 19:58:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2448 transitions. [2023-12-15 19:58:07,800 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2448 transitions. Word has length 728 [2023-12-15 19:58:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:07,800 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 2448 transitions. [2023-12-15 19:58:07,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2448 transitions. [2023-12-15 19:58:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-15 19:58:07,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:07,806 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:07,815 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 19:58:08,015 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 19:58:08,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:08,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1499155832, now seen corresponding path program 1 times [2023-12-15 19:58:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:08,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94064897] [2023-12-15 19:58:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:08,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:08,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:08,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522431924] [2023-12-15 19:58:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:08,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:08,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:08,065 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 19:58:08,070 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 19:58:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:08,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:08,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:08,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:08,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94064897] [2023-12-15 19:58:08,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522431924] [2023-12-15 19:58:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522431924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:08,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72132780] [2023-12-15 19:58:08,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:08,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:08,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:08,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:08,449 INFO L87 Difference]: Start difference. First operand 1397 states and 2448 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:08,536 INFO L93 Difference]: Finished difference Result 3595 states and 6234 transitions. [2023-12-15 19:58:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 729 [2023-12-15 19:58:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:08,549 INFO L225 Difference]: With dead ends: 3595 [2023-12-15 19:58:08,549 INFO L226 Difference]: Without dead ends: 2199 [2023-12-15 19:58:08,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 727 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 19:58:08,557 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 331 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:08,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1167 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2023-12-15 19:58:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2195. [2023-12-15 19:58:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1636 states have (on average 1.6356968215158925) internal successors, (2676), 1642 states have internal predecessors, (2676), 546 states have call successors, (546), 12 states have call predecessors, (546), 12 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-12-15 19:58:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3768 transitions. [2023-12-15 19:58:08,701 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3768 transitions. Word has length 729 [2023-12-15 19:58:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:08,701 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 3768 transitions. [2023-12-15 19:58:08,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3768 transitions. [2023-12-15 19:58:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-15 19:58:08,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:08,707 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:08,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:08,916 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 19:58:08,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:08,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash -306282502, now seen corresponding path program 1 times [2023-12-15 19:58:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788465718] [2023-12-15 19:58:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:08,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:08,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445963009] [2023-12-15 19:58:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:08,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:08,958 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 19:58:08,984 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 19:58:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:09,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:09,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 9335 proven. 78 refuted. 0 times theorem prover too weak. 16351 trivial. 0 not checked. [2023-12-15 19:58:09,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 261 proven. 78 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-15 19:58:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788465718] [2023-12-15 19:58:09,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445963009] [2023-12-15 19:58:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445963009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:09,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:09,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372981652] [2023-12-15 19:58:09,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:09,890 INFO L87 Difference]: Start difference. First operand 2195 states and 3768 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-15 19:58:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:10,565 INFO L93 Difference]: Finished difference Result 4429 states and 7571 transitions. [2023-12-15 19:58:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:58:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 729 [2023-12-15 19:58:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:10,574 INFO L225 Difference]: With dead ends: 4429 [2023-12-15 19:58:10,574 INFO L226 Difference]: Without dead ends: 2235 [2023-12-15 19:58:10,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 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 19:58:10,579 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1014 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:10,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1173 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:58:10,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-12-15 19:58:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2211. [2023-12-15 19:58:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1648 states have (on average 1.6189320388349515) internal successors, (2668), 1654 states have internal predecessors, (2668), 546 states have call successors, (546), 16 states have call predecessors, (546), 16 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-12-15 19:58:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3760 transitions. [2023-12-15 19:58:10,705 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3760 transitions. Word has length 729 [2023-12-15 19:58:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:10,705 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 3760 transitions. [2023-12-15 19:58:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-15 19:58:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3760 transitions. [2023-12-15 19:58:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-15 19:58:10,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:10,712 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:10,718 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 19:58:10,918 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 19:58:10,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:10,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash 155220943, now seen corresponding path program 1 times [2023-12-15 19:58:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425220301] [2023-12-15 19:58:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:10,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:10,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066680616] [2023-12-15 19:58:10,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:10,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:10,961 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 19:58:10,963 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 19:58:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:11,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:58:11,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:12,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425220301] [2023-12-15 19:58:12,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066680616] [2023-12-15 19:58:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066680616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:12,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:58:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879899234] [2023-12-15 19:58:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:58:12,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:58:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:58:12,102 INFO L87 Difference]: Start difference. First operand 2211 states and 3760 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:12,653 INFO L93 Difference]: Finished difference Result 10915 states and 18548 transitions. [2023-12-15 19:58:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:58:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-12-15 19:58:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:12,688 INFO L225 Difference]: With dead ends: 10915 [2023-12-15 19:58:12,688 INFO L226 Difference]: Without dead ends: 8705 [2023-12-15 19:58:12,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:58:12,696 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1594 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:12,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2440 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:58:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2023-12-15 19:58:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8699. [2023-12-15 19:58:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8699 states, 6450 states have (on average 1.6052713178294573) internal successors, (10354), 6474 states have internal predecessors, (10354), 2184 states have call successors, (2184), 64 states have call predecessors, (2184), 64 states have return successors, (2184), 2160 states have call predecessors, (2184), 2184 states have call successors, (2184) [2023-12-15 19:58:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 14722 transitions. [2023-12-15 19:58:13,206 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 14722 transitions. Word has length 731 [2023-12-15 19:58:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:13,207 INFO L495 AbstractCegarLoop]: Abstraction has 8699 states and 14722 transitions. [2023-12-15 19:58:13,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 14722 transitions. [2023-12-15 19:58:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-15 19:58:13,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:13,219 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:13,228 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 19:58:13,426 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 19:58:13,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:13,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:13,427 INFO L85 PathProgramCache]: Analyzing trace with hash 374075661, now seen corresponding path program 1 times [2023-12-15 19:58:13,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:13,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677923599] [2023-12-15 19:58:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:13,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:13,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932722787] [2023-12-15 19:58:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:13,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:13,468 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 19:58:13,494 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 19:58:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:13,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:58:13,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 12723 proven. 144 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-12-15 19:58:14,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 195 proven. 144 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-15 19:58:14,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677923599] [2023-12-15 19:58:14,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932722787] [2023-12-15 19:58:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932722787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:14,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 19:58:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354618390] [2023-12-15 19:58:14,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:58:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:58:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:58:14,544 INFO L87 Difference]: Start difference. First operand 8699 states and 14722 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-15 19:58:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:17,138 INFO L93 Difference]: Finished difference Result 38011 states and 63990 transitions. [2023-12-15 19:58:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 19:58:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) Word has length 731 [2023-12-15 19:58:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:17,235 INFO L225 Difference]: With dead ends: 38011 [2023-12-15 19:58:17,235 INFO L226 Difference]: Without dead ends: 29313 [2023-12-15 19:58:17,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1477 GetRequests, 1452 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2023-12-15 19:58:17,263 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1918 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:17,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 2521 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:58:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29313 states. [2023-12-15 19:58:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29313 to 16203. [2023-12-15 19:58:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 12322 states have (on average 1.6154844992695991) internal successors, (19906), 12378 states have internal predecessors, (19906), 3768 states have call successors, (3768), 112 states have call predecessors, (3768), 112 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-15 19:58:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 27442 transitions. [2023-12-15 19:58:18,572 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 27442 transitions. Word has length 731 [2023-12-15 19:58:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:18,573 INFO L495 AbstractCegarLoop]: Abstraction has 16203 states and 27442 transitions. [2023-12-15 19:58:18,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-15 19:58:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 27442 transitions. [2023-12-15 19:58:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-15 19:58:18,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:18,585 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:18,598 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 19:58:18,798 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 19:58:18,799 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:18,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1316781727, now seen corresponding path program 1 times [2023-12-15 19:58:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349522303] [2023-12-15 19:58:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:18,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828925425] [2023-12-15 19:58:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:18,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:18,840 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 19:58:18,847 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 19:58:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:19,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:58:19,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 14393 proven. 159 refuted. 0 times theorem prover too weak. 11212 trivial. 0 not checked. [2023-12-15 19:58:19,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 180 proven. 159 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-15 19:58:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349522303] [2023-12-15 19:58:20,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828925425] [2023-12-15 19:58:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828925425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:20,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:58:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156195526] [2023-12-15 19:58:20,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:58:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:58:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:58:20,140 INFO L87 Difference]: Start difference. First operand 16203 states and 27442 transitions. Second operand has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-12-15 19:58:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:21,258 INFO L93 Difference]: Finished difference Result 32821 states and 55235 transitions. [2023-12-15 19:58:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 19:58:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) Word has length 732 [2023-12-15 19:58:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:21,302 INFO L225 Difference]: With dead ends: 32821 [2023-12-15 19:58:21,302 INFO L226 Difference]: Without dead ends: 16619 [2023-12-15 19:58:21,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:58:21,339 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 366 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:21,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1140 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:58:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16619 states. [2023-12-15 19:58:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16619 to 16459. [2023-12-15 19:58:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16459 states, 12514 states have (on average 1.5999680357999042) internal successors, (20022), 12570 states have internal predecessors, (20022), 3768 states have call successors, (3768), 176 states have call predecessors, (3768), 176 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-15 19:58:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16459 states to 16459 states and 27558 transitions. [2023-12-15 19:58:22,504 INFO L78 Accepts]: Start accepts. Automaton has 16459 states and 27558 transitions. Word has length 732 [2023-12-15 19:58:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:22,505 INFO L495 AbstractCegarLoop]: Abstraction has 16459 states and 27558 transitions. [2023-12-15 19:58:22,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-12-15 19:58:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 16459 states and 27558 transitions. [2023-12-15 19:58:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-15 19:58:22,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:22,516 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:22,526 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 19:58:22,720 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 19:58:22,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:22,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -429558881, now seen corresponding path program 1 times [2023-12-15 19:58:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741562087] [2023-12-15 19:58:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:22,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:22,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241030628] [2023-12-15 19:58:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:22,763 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 19:58:22,786 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 19:58:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:23,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:23,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 11805 proven. 117 refuted. 0 times theorem prover too weak. 13842 trivial. 0 not checked. [2023-12-15 19:58:23,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 222 proven. 117 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-15 19:58:23,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:23,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741562087] [2023-12-15 19:58:23,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:23,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241030628] [2023-12-15 19:58:23,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241030628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:23,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:23,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752839250] [2023-12-15 19:58:23,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:23,811 INFO L87 Difference]: Start difference. First operand 16459 states and 27558 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-15 19:58:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:24,875 INFO L93 Difference]: Finished difference Result 29445 states and 48771 transitions. [2023-12-15 19:58:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 732 [2023-12-15 19:58:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:24,910 INFO L225 Difference]: With dead ends: 29445 [2023-12-15 19:58:24,910 INFO L226 Difference]: Without dead ends: 12987 [2023-12-15 19:58:24,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1456 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 19:58:24,928 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 381 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:24,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1125 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:58:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2023-12-15 19:58:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12795. [2023-12-15 19:58:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12795 states, 8834 states have (on average 1.5252433778582748) internal successors, (13474), 8890 states have internal predecessors, (13474), 3768 states have call successors, (3768), 192 states have call predecessors, (3768), 192 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-15 19:58:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12795 states to 12795 states and 21010 transitions. [2023-12-15 19:58:25,843 INFO L78 Accepts]: Start accepts. Automaton has 12795 states and 21010 transitions. Word has length 732 [2023-12-15 19:58:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:25,844 INFO L495 AbstractCegarLoop]: Abstraction has 12795 states and 21010 transitions. [2023-12-15 19:58:25,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-15 19:58:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12795 states and 21010 transitions. [2023-12-15 19:58:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-15 19:58:25,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:25,853 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:25,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 19:58:26,060 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 19:58:26,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:26,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2144558333, now seen corresponding path program 1 times [2023-12-15 19:58:26,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:26,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630441431] [2023-12-15 19:58:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:26,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:26,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:26,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237212836] [2023-12-15 19:58:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:26,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:26,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:26,105 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 19:58:26,108 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 19:58:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:26,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:26,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 7445 proven. 57 refuted. 0 times theorem prover too weak. 18262 trivial. 0 not checked. [2023-12-15 19:58:26,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 282 proven. 57 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-12-15 19:58:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630441431] [2023-12-15 19:58:26,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237212836] [2023-12-15 19:58:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237212836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:26,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956447142] [2023-12-15 19:58:26,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:26,984 INFO L87 Difference]: Start difference. First operand 12795 states and 21010 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-15 19:58:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:28,356 INFO L93 Difference]: Finished difference Result 25829 states and 42251 transitions. [2023-12-15 19:58:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:28,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 733 [2023-12-15 19:58:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:28,393 INFO L225 Difference]: With dead ends: 25829 [2023-12-15 19:58:28,393 INFO L226 Difference]: Without dead ends: 13035 [2023-12-15 19:58:28,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1458 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 19:58:28,422 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 626 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:28,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1138 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:58:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13035 states. [2023-12-15 19:58:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13035 to 12827. [2023-12-15 19:58:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 8858 states have (on average 1.516595168209528) internal successors, (13434), 8914 states have internal predecessors, (13434), 3768 states have call successors, (3768), 200 states have call predecessors, (3768), 200 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-12-15 19:58:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 20970 transitions. [2023-12-15 19:58:29,490 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 20970 transitions. Word has length 733 [2023-12-15 19:58:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:29,491 INFO L495 AbstractCegarLoop]: Abstraction has 12827 states and 20970 transitions. [2023-12-15 19:58:29,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-12-15 19:58:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 20970 transitions. [2023-12-15 19:58:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-15 19:58:29,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:29,500 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:29,510 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 19:58:29,707 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 19:58:29,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2009860353, now seen corresponding path program 1 times [2023-12-15 19:58:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276851761] [2023-12-15 19:58:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:29,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:29,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908891475] [2023-12-15 19:58:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:29,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:29,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:29,766 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:29,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:58:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:30,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:58:30,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:30,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276851761] [2023-12-15 19:58:30,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908891475] [2023-12-15 19:58:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908891475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:30,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:30,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:58:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778516350] [2023-12-15 19:58:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:30,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:58:30,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:58:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:30,177 INFO L87 Difference]: Start difference. First operand 12827 states and 20970 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:31,818 INFO L93 Difference]: Finished difference Result 34647 states and 56100 transitions. [2023-12-15 19:58:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:58:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-15 19:58:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:31,883 INFO L225 Difference]: With dead ends: 34647 [2023-12-15 19:58:31,883 INFO L226 Difference]: Without dead ends: 21757 [2023-12-15 19:58:31,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 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 19:58:31,915 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 310 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:31,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 2002 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:58:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2023-12-15 19:58:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21747. [2023-12-15 19:58:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21747 states, 13986 states have (on average 1.4484484484484486) internal successors, (20258), 14106 states have internal predecessors, (20258), 7368 states have call successors, (7368), 392 states have call predecessors, (7368), 392 states have return successors, (7368), 7248 states have call predecessors, (7368), 7368 states have call successors, (7368) [2023-12-15 19:58:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21747 states to 21747 states and 34994 transitions. [2023-12-15 19:58:33,737 INFO L78 Accepts]: Start accepts. Automaton has 21747 states and 34994 transitions. Word has length 733 [2023-12-15 19:58:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:33,737 INFO L495 AbstractCegarLoop]: Abstraction has 21747 states and 34994 transitions. [2023-12-15 19:58:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 21747 states and 34994 transitions. [2023-12-15 19:58:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-15 19:58:33,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:33,748 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:33,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:33,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:33,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1947820739, now seen corresponding path program 1 times [2023-12-15 19:58:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637370668] [2023-12-15 19:58:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:33,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405323833] [2023-12-15 19:58:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:33,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:33,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:34,000 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:34,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:58:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:34,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:58:34,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:35,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637370668] [2023-12-15 19:58:35,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405323833] [2023-12-15 19:58:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405323833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 19:58:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058533917] [2023-12-15 19:58:35,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:35,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:58:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:58:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:58:35,116 INFO L87 Difference]: Start difference. First operand 21747 states and 34994 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:42,460 INFO L93 Difference]: Finished difference Result 89965 states and 144173 transitions. [2023-12-15 19:58:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 19:58:42,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-15 19:58:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:42,628 INFO L225 Difference]: With dead ends: 89965 [2023-12-15 19:58:42,628 INFO L226 Difference]: Without dead ends: 67243 [2023-12-15 19:58:42,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:58:42,676 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2019 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:42,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 3710 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:58:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67243 states. [2023-12-15 19:58:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67243 to 35955. [2023-12-15 19:58:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35955 states, 24194 states have (on average 1.477473753823262) internal successors, (35746), 24370 states have internal predecessors, (35746), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-12-15 19:58:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35955 states to 35955 states and 58050 transitions. [2023-12-15 19:58:46,861 INFO L78 Accepts]: Start accepts. Automaton has 35955 states and 58050 transitions. Word has length 733 [2023-12-15 19:58:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:46,862 INFO L495 AbstractCegarLoop]: Abstraction has 35955 states and 58050 transitions. [2023-12-15 19:58:46,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 35955 states and 58050 transitions. [2023-12-15 19:58:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-15 19:58:46,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:46,876 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:46,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:58:47,081 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:47,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash 977586109, now seen corresponding path program 1 times [2023-12-15 19:58:47,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:47,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682419836] [2023-12-15 19:58:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:47,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:47,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315738711] [2023-12-15 19:58:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:47,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:47,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:47,120 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:47,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:58:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:47,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:47,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:47,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:47,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682419836] [2023-12-15 19:58:47,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315738711] [2023-12-15 19:58:47,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315738711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:47,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:47,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072513634] [2023-12-15 19:58:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:47,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:47,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:47,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:47,576 INFO L87 Difference]: Start difference. First operand 35955 states and 58050 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:50,578 INFO L93 Difference]: Finished difference Result 72815 states and 117780 transitions. [2023-12-15 19:58:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-12-15 19:58:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:50,659 INFO L225 Difference]: With dead ends: 72815 [2023-12-15 19:58:50,659 INFO L226 Difference]: Without dead ends: 36749 [2023-12-15 19:58:50,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 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 19:58:50,708 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 546 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:50,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1613 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36749 states. [2023-12-15 19:58:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36749 to 36283. [2023-12-15 19:58:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36283 states, 24522 states have (on average 1.4776119402985075) internal successors, (36234), 24698 states have internal predecessors, (36234), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-12-15 19:58:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36283 states to 36283 states and 58538 transitions. [2023-12-15 19:58:54,015 INFO L78 Accepts]: Start accepts. Automaton has 36283 states and 58538 transitions. Word has length 733 [2023-12-15 19:58:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:54,015 INFO L495 AbstractCegarLoop]: Abstraction has 36283 states and 58538 transitions. [2023-12-15 19:58:54,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-12-15 19:58:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 36283 states and 58538 transitions. [2023-12-15 19:58:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-12-15 19:58:54,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:54,028 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:54,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:54,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:58:54,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:54,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1111599615, now seen corresponding path program 1 times [2023-12-15 19:58:54,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331832702] [2023-12-15 19:58:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:54,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129274158] [2023-12-15 19:58:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:54,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:54,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:54,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:58:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:54,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:54,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-12-15 19:58:56,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331832702] [2023-12-15 19:58:56,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129274158] [2023-12-15 19:58:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129274158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:56,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381264720] [2023-12-15 19:58:56,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:58:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:58:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:56,241 INFO L87 Difference]: Start difference. First operand 36283 states and 58538 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Received shutdown request... [2023-12-15 19:58:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:58:59,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 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 19:58:59,320 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 987 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:59,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1527 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:58:59,321 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:58:59,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:59,353 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:58:59,353 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 19:58:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 19:58:59,529 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (36283states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (68716 states constructed, input type IntersectNwa). [2023-12-15 19:58:59,532 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:59,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:58:59,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:58:59 BoogieIcfgContainer [2023-12-15 19:58:59,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:58:59,535 INFO L158 Benchmark]: Toolchain (without parser) took 58607.77ms. Allocated memory was 217.1MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 167.8MB in the beginning and 3.9GB in the end (delta: -3.8GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 19:58:59,535 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 217.1MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:58:59,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.45ms. Allocated memory is still 217.1MB. Free memory was 167.8MB in the beginning and 135.8MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-15 19:58:59,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.93ms. Allocated memory is still 217.1MB. Free memory was 135.8MB in the beginning and 123.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 19:58:59,536 INFO L158 Benchmark]: Boogie Preprocessor took 97.43ms. Allocated memory is still 217.1MB. Free memory was 123.3MB in the beginning and 109.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 19:58:59,536 INFO L158 Benchmark]: RCFGBuilder took 983.16ms. Allocated memory was 217.1MB in the beginning and 281.0MB in the end (delta: 64.0MB). Free memory was 109.1MB in the beginning and 183.1MB in the end (delta: -74.0MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB. [2023-12-15 19:58:59,536 INFO L158 Benchmark]: TraceAbstraction took 57053.76ms. Allocated memory was 281.0MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 182.6MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 19:58:59,537 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 217.1MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.45ms. Allocated memory is still 217.1MB. Free memory was 167.8MB in the beginning and 135.8MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.93ms. Allocated memory is still 217.1MB. Free memory was 135.8MB in the beginning and 123.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.43ms. Allocated memory is still 217.1MB. Free memory was 123.3MB in the beginning and 109.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 983.16ms. Allocated memory was 217.1MB in the beginning and 281.0MB in the end (delta: 64.0MB). Free memory was 109.1MB in the beginning and 183.1MB in the end (delta: -74.0MB). Peak memory consumption was 40.3MB. Max. memory is 8.0GB. * TraceAbstraction took 57053.76ms. Allocated memory was 281.0MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 182.6MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (36283states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (68716 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 344 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.0s, OverallIterations: 17, TraceHistogramMax: 114, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 23.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12190 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11747 mSDsluCounter, 26263 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15273 mSDsCounter, 2583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7021 IncrementalHoareTripleChecker+Invalid, 9604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2583 mSolverCounterUnsat, 10990 mSDtfsCounter, 7021 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16090 GetRequests, 15993 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36283occurred in iteration=16, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 45629 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 13138 NumberOfCodeBlocks, 13138 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 16047 ConstructedInterpolants, 0 QuantifiedInterpolants, 31992 SizeOfPredicates, 29 NumberOfNonLiveVariables, 27827 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 565698/566808 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