/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/combinations/Problem05_label40+token_ring.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:29:33,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:29:33,488 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 17:29:33,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:29:33,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:29:33,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:29:33,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:29:33,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:29:33,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:29:33,533 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:29:33,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:29:33,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:29:33,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:29:33,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:29:33,536 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:29:33,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:29:33,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:29:33,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:29:33,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:29:33,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:29:33,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:29:33,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:29:33,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:29:33,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:29:33,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:29:33,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:29:33,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:29:33,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:29:33,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:29:33,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:29:33,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:29:33,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:29:33,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:29:33,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:29:33,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:29:33,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:29:33,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:29:33,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:29:33,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:29:33,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:29:33,543 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:29:33,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:29:33,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:29:33,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:29:33,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:29:33,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:29:33,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:29:33,804 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:29:33,804 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:29:33,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c [2023-12-15 17:29:34,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:29:35,463 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:29:35,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c [2023-12-15 17:29:35,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8277b23fc/2f5355de8d40449e9792decbb90bb883/FLAG0e1313bb4 [2023-12-15 17:29:35,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8277b23fc/2f5355de8d40449e9792decbb90bb883 [2023-12-15 17:29:35,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:29:35,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:29:35,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:29:35,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:29:35,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:29:35,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:29:35" (1/1) ... [2023-12-15 17:29:35,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d54f309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:35, skipping insertion in model container [2023-12-15 17:29:35,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:29:35" (1/1) ... [2023-12-15 17:29:35,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:29:37,172 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2023-12-15 17:29:37,203 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2023-12-15 17:29:37,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:29:37,425 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:29:38,155 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2023-12-15 17:29:38,165 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2023-12-15 17:29:38,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:29:38,248 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:29:38,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38 WrapperNode [2023-12-15 17:29:38,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:29:38,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:29:38,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:29:38,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:29:38,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:38,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:38,764 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12993 [2023-12-15 17:29:38,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:29:38,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:29:38,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:29:38,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:29:38,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:38,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:38,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,029 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 17:29:39,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:29:39,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:29:39,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:29:39,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:29:39,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (1/1) ... [2023-12-15 17:29:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:29:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:29:39,439 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 17:29:39,463 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 17:29:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:29:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:29:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:29:39,475 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:29:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:29:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:29:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:29:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:29:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:29:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:29:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:29:39,615 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:29:39,617 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:29:46,813 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:29:46,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:29:46,908 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-15 17:29:46,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:29:46 BoogieIcfgContainer [2023-12-15 17:29:46,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:29:46,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:29:46,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:29:46,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:29:46,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:29:35" (1/3) ... [2023-12-15 17:29:46,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35183e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:29:46, skipping insertion in model container [2023-12-15 17:29:46,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:29:38" (2/3) ... [2023-12-15 17:29:46,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35183e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:29:46, skipping insertion in model container [2023-12-15 17:29:46,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:29:46" (3/3) ... [2023-12-15 17:29:46,917 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.08.cil-1.c [2023-12-15 17:29:46,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:29:46,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:29:47,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:29:47,008 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;@5b5907bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:29:47,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:29:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 17:29:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:47,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:47,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:47,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:47,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2060137260, now seen corresponding path program 1 times [2023-12-15 17:29:47,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924774430] [2023-12-15 17:29:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924774430] [2023-12-15 17:29:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924774430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:47,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:29:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653891117] [2023-12-15 17:29:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:47,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:29:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:29:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:29:47,557 INFO L87 Difference]: Start difference. First operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:48,946 INFO L93 Difference]: Finished difference Result 4844 states and 9066 transitions. [2023-12-15 17:29:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:29:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:29:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:48,982 INFO L225 Difference]: With dead ends: 4844 [2023-12-15 17:29:48,982 INFO L226 Difference]: Without dead ends: 2465 [2023-12-15 17:29:48,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:29:48,994 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 695 mSDsluCounter, 12116 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 16297 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:48,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 16297 Invalid, 806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:29:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-12-15 17:29:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2375. [2023-12-15 17:29:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2345 states have (on average 1.8426439232409382) internal successors, (4321), 2347 states have internal predecessors, (4321), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 17:29:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4365 transitions. [2023-12-15 17:29:49,129 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4365 transitions. Word has length 121 [2023-12-15 17:29:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:49,129 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 4365 transitions. [2023-12-15 17:29:49,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4365 transitions. [2023-12-15 17:29:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:49,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:49,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:49,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:29:49,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:49,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 58250990, now seen corresponding path program 1 times [2023-12-15 17:29:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:49,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060385131] [2023-12-15 17:29:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:49,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:49,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060385131] [2023-12-15 17:29:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060385131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:29:49,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926872240] [2023-12-15 17:29:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:49,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:29:49,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:29:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:29:49,478 INFO L87 Difference]: Start difference. First operand 2375 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:51,621 INFO L93 Difference]: Finished difference Result 3046 states and 5475 transitions. [2023-12-15 17:29:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:29:51,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:29:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:51,634 INFO L225 Difference]: With dead ends: 3046 [2023-12-15 17:29:51,634 INFO L226 Difference]: Without dead ends: 2806 [2023-12-15 17:29:51,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:29:51,637 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 4998 mSDsluCounter, 12445 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 16599 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:51,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5013 Valid, 16599 Invalid, 1714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 17:29:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2023-12-15 17:29:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2627. [2023-12-15 17:29:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2573 states have (on average 1.8239409249902838) internal successors, (4693), 2576 states have internal predecessors, (4693), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-15 17:29:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4774 transitions. [2023-12-15 17:29:51,711 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4774 transitions. Word has length 121 [2023-12-15 17:29:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:51,712 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 4774 transitions. [2023-12-15 17:29:51,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4774 transitions. [2023-12-15 17:29:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:51,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:51,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:51,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:29:51,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:51,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash 603539502, now seen corresponding path program 1 times [2023-12-15 17:29:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:51,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246694184] [2023-12-15 17:29:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246694184] [2023-12-15 17:29:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246694184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:51,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:51,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:29:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138470162] [2023-12-15 17:29:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:51,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:29:51,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:29:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:29:51,937 INFO L87 Difference]: Start difference. First operand 2627 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:54,730 INFO L93 Difference]: Finished difference Result 3651 states and 6465 transitions. [2023-12-15 17:29:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:29:54,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:29:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:54,743 INFO L225 Difference]: With dead ends: 3651 [2023-12-15 17:29:54,743 INFO L226 Difference]: Without dead ends: 3159 [2023-12-15 17:29:54,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:29:54,746 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 5019 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:54,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 21241 Invalid, 2691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:29:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2023-12-15 17:29:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2860. [2023-12-15 17:29:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2782 states have (on average 1.8069734004313445) internal successors, (5027), 2786 states have internal predecessors, (5027), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-15 17:29:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 5144 transitions. [2023-12-15 17:29:54,818 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 5144 transitions. Word has length 121 [2023-12-15 17:29:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:54,818 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 5144 transitions. [2023-12-15 17:29:54,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 5144 transitions. [2023-12-15 17:29:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:54,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:54,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:54,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:29:54,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:54,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1429854544, now seen corresponding path program 1 times [2023-12-15 17:29:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:54,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915695275] [2023-12-15 17:29:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:54,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:55,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:55,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915695275] [2023-12-15 17:29:55,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915695275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:55,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:55,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:29:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435579402] [2023-12-15 17:29:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:55,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:29:55,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:29:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:29:55,102 INFO L87 Difference]: Start difference. First operand 2860 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:57,354 INFO L93 Difference]: Finished difference Result 4537 states and 7907 transitions. [2023-12-15 17:29:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:29:57,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:29:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:57,371 INFO L225 Difference]: With dead ends: 4537 [2023-12-15 17:29:57,372 INFO L226 Difference]: Without dead ends: 3812 [2023-12-15 17:29:57,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:29:57,376 INFO L413 NwaCegarLoop]: 4163 mSDtfsCounter, 5097 mSDsluCounter, 16578 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:57,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5112 Valid, 20741 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 17:29:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2023-12-15 17:29:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3327. [2023-12-15 17:29:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7794439237738207) internal successors, (5696), 3207 states have internal predecessors, (5696), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-15 17:29:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5889 transitions. [2023-12-15 17:29:57,483 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5889 transitions. Word has length 121 [2023-12-15 17:29:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:57,483 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5889 transitions. [2023-12-15 17:29:57,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5889 transitions. [2023-12-15 17:29:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:57,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:57,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:57,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:29:57,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:57,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash 998404078, now seen corresponding path program 1 times [2023-12-15 17:29:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:57,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786559699] [2023-12-15 17:29:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786559699] [2023-12-15 17:29:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786559699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:29:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782399497] [2023-12-15 17:29:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:57,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:29:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:29:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:29:57,697 INFO L87 Difference]: Start difference. First operand 3327 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:29:59,007 INFO L93 Difference]: Finished difference Result 4994 states and 8645 transitions. [2023-12-15 17:29:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:29:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:29:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:29:59,022 INFO L225 Difference]: With dead ends: 4994 [2023-12-15 17:29:59,023 INFO L226 Difference]: Without dead ends: 3802 [2023-12-15 17:29:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:29:59,028 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4837 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:29:59,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 16453 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:29:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2023-12-15 17:29:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3327. [2023-12-15 17:29:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7778819119025304) internal successors, (5691), 3207 states have internal predecessors, (5691), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-15 17:29:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5884 transitions. [2023-12-15 17:29:59,152 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5884 transitions. Word has length 121 [2023-12-15 17:29:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:29:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5884 transitions. [2023-12-15 17:29:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:29:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5884 transitions. [2023-12-15 17:29:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:29:59,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:29:59,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:59,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:29:59,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:29:59,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:29:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -308738320, now seen corresponding path program 1 times [2023-12-15 17:29:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:29:59,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930175909] [2023-12-15 17:29:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:29:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:29:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:29:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:29:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:29:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:29:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:29:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:29:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:29:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:29:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930175909] [2023-12-15 17:29:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930175909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:29:59,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:29:59,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:29:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945100595] [2023-12-15 17:29:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:29:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:29:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:29:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:29:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:29:59,372 INFO L87 Difference]: Start difference. First operand 3327 states and 5884 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:00,499 INFO L93 Difference]: Finished difference Result 4983 states and 8609 transitions. [2023-12-15 17:30:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:30:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:00,516 INFO L225 Difference]: With dead ends: 4983 [2023-12-15 17:30:00,516 INFO L226 Difference]: Without dead ends: 3791 [2023-12-15 17:30:00,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:30:00,523 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4833 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:00,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4849 Valid, 16453 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:30:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2023-12-15 17:30:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3327. [2023-12-15 17:30:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7763199000312402) internal successors, (5686), 3207 states have internal predecessors, (5686), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-15 17:30:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5879 transitions. [2023-12-15 17:30:00,642 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5879 transitions. Word has length 121 [2023-12-15 17:30:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:00,642 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5879 transitions. [2023-12-15 17:30:00,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5879 transitions. [2023-12-15 17:30:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:00,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:00,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:30:00,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:00,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash 722302578, now seen corresponding path program 1 times [2023-12-15 17:30:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366770905] [2023-12-15 17:30:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366770905] [2023-12-15 17:30:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366770905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290888107] [2023-12-15 17:30:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:00,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:00,855 INFO L87 Difference]: Start difference. First operand 3327 states and 5879 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:03,414 INFO L93 Difference]: Finished difference Result 6219 states and 10582 transitions. [2023-12-15 17:30:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:30:03,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:03,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:03,446 INFO L225 Difference]: With dead ends: 6219 [2023-12-15 17:30:03,447 INFO L226 Difference]: Without dead ends: 5027 [2023-12-15 17:30:03,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:30:03,453 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 5002 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:03,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21239 Invalid, 2614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:30:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2023-12-15 17:30:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4276. [2023-12-15 17:30:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.735816477553034) internal successors, (7037), 4064 states have internal predecessors, (7037), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-15 17:30:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7388 transitions. [2023-12-15 17:30:03,593 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7388 transitions. Word has length 121 [2023-12-15 17:30:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:03,593 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 7388 transitions. [2023-12-15 17:30:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7388 transitions. [2023-12-15 17:30:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:03,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:03,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:30:03,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:03,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1184100688, now seen corresponding path program 1 times [2023-12-15 17:30:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134028608] [2023-12-15 17:30:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134028608] [2023-12-15 17:30:03,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134028608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:03,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:03,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945009221] [2023-12-15 17:30:03,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:03,776 INFO L87 Difference]: Start difference. First operand 4276 states and 7388 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:04,979 INFO L93 Difference]: Finished difference Result 7177 states and 12134 transitions. [2023-12-15 17:30:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:30:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:04,995 INFO L225 Difference]: With dead ends: 7177 [2023-12-15 17:30:04,996 INFO L226 Difference]: Without dead ends: 5036 [2023-12-15 17:30:05,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:30:05,005 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4724 mSDsluCounter, 16388 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 20529 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:05,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 20529 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:30:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-12-15 17:30:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4276. [2023-12-15 17:30:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.7335964479526393) internal successors, (7028), 4064 states have internal predecessors, (7028), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-15 17:30:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7379 transitions. [2023-12-15 17:30:05,141 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7379 transitions. Word has length 121 [2023-12-15 17:30:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:05,142 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 7379 transitions. [2023-12-15 17:30:05,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7379 transitions. [2023-12-15 17:30:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:05,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:05,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:05,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:30:05,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:05,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 416970418, now seen corresponding path program 1 times [2023-12-15 17:30:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966892536] [2023-12-15 17:30:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:05,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966892536] [2023-12-15 17:30:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966892536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:05,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:05,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:05,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563742840] [2023-12-15 17:30:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:05,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:05,346 INFO L87 Difference]: Start difference. First operand 4276 states and 7379 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:07,794 INFO L93 Difference]: Finished difference Result 9610 states and 16003 transitions. [2023-12-15 17:30:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:30:07,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:07,820 INFO L225 Difference]: With dead ends: 9610 [2023-12-15 17:30:07,820 INFO L226 Difference]: Without dead ends: 7469 [2023-12-15 17:30:07,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:30:07,830 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 4994 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5009 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:07,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5009 Valid, 21239 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:30:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2023-12-15 17:30:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 6184. [2023-12-15 17:30:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 5770 states have (on average 1.6863084922010398) internal successors, (9730), 5788 states have internal predecessors, (9730), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-15 17:30:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 10415 transitions. [2023-12-15 17:30:08,051 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 10415 transitions. Word has length 121 [2023-12-15 17:30:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:08,052 INFO L495 AbstractCegarLoop]: Abstraction has 6184 states and 10415 transitions. [2023-12-15 17:30:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 10415 transitions. [2023-12-15 17:30:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:08,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:08,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:08,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:30:08,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:08,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash -639760784, now seen corresponding path program 1 times [2023-12-15 17:30:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140681469] [2023-12-15 17:30:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140681469] [2023-12-15 17:30:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140681469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512122180] [2023-12-15 17:30:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:08,231 INFO L87 Difference]: Start difference. First operand 6184 states and 10415 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:10,787 INFO L93 Difference]: Finished difference Result 18072 states and 29651 transitions. [2023-12-15 17:30:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:30:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:10,837 INFO L225 Difference]: With dead ends: 18072 [2023-12-15 17:30:10,838 INFO L226 Difference]: Without dead ends: 14023 [2023-12-15 17:30:10,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:30:10,858 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5287 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:10,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5311 Valid, 21232 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:30:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2023-12-15 17:30:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 9981. [2023-12-15 17:30:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9199 states have (on average 1.6453962387216001) internal successors, (15136), 9233 states have internal predecessors, (15136), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-15 17:30:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 16511 transitions. [2023-12-15 17:30:11,381 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 16511 transitions. Word has length 121 [2023-12-15 17:30:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:11,382 INFO L495 AbstractCegarLoop]: Abstraction has 9981 states and 16511 transitions. [2023-12-15 17:30:11,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 16511 transitions. [2023-12-15 17:30:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:11,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:11,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:30:11,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:11,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 711624434, now seen corresponding path program 1 times [2023-12-15 17:30:11,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:11,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59406199] [2023-12-15 17:30:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:11,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:11,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59406199] [2023-12-15 17:30:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59406199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132707418] [2023-12-15 17:30:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:11,570 INFO L87 Difference]: Start difference. First operand 9981 states and 16511 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:14,445 INFO L93 Difference]: Finished difference Result 32883 states and 53741 transitions. [2023-12-15 17:30:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:30:14,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:14,537 INFO L225 Difference]: With dead ends: 32883 [2023-12-15 17:30:14,537 INFO L226 Difference]: Without dead ends: 25037 [2023-12-15 17:30:14,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:30:14,565 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 5120 mSDsluCounter, 16600 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:14,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5134 Valid, 20789 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:30:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25037 states. [2023-12-15 17:30:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25037 to 17414. [2023-12-15 17:30:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17414 states, 15912 states have (on average 1.6165158371040724) internal successors, (25722), 15978 states have internal predecessors, (25722), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-15 17:30:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17414 states to 17414 states and 28607 transitions. [2023-12-15 17:30:15,323 INFO L78 Accepts]: Start accepts. Automaton has 17414 states and 28607 transitions. Word has length 121 [2023-12-15 17:30:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:15,324 INFO L495 AbstractCegarLoop]: Abstraction has 17414 states and 28607 transitions. [2023-12-15 17:30:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 17414 states and 28607 transitions. [2023-12-15 17:30:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:15,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:15,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:15,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:30:15,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:15,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -907350480, now seen corresponding path program 1 times [2023-12-15 17:30:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910855590] [2023-12-15 17:30:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:15,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910855590] [2023-12-15 17:30:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910855590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664249472] [2023-12-15 17:30:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:15,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:15,506 INFO L87 Difference]: Start difference. First operand 17414 states and 28607 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:30:18,706 INFO L93 Difference]: Finished difference Result 61578 states and 100971 transitions. [2023-12-15 17:30:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:30:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2023-12-15 17:30:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:30:18,904 INFO L225 Difference]: With dead ends: 61578 [2023-12-15 17:30:18,904 INFO L226 Difference]: Without dead ends: 46299 [2023-12-15 17:30:18,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:30:18,977 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 5221 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5245 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:18,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5245 Valid, 21232 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:30:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46299 states. [2023-12-15 17:30:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46299 to 32439. [2023-12-15 17:30:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32439 states, 29529 states have (on average 1.598835043516543) internal successors, (47212), 29659 states have internal predecessors, (47212), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-15 17:30:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32439 states to 32439 states and 53539 transitions. [2023-12-15 17:30:20,690 INFO L78 Accepts]: Start accepts. Automaton has 32439 states and 53539 transitions. Word has length 121 [2023-12-15 17:30:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:30:20,690 INFO L495 AbstractCegarLoop]: Abstraction has 32439 states and 53539 transitions. [2023-12-15 17:30:20,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:30:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32439 states and 53539 transitions. [2023-12-15 17:30:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 17:30:20,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:30:20,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:30:20,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:30:20,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:30:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1790859470, now seen corresponding path program 1 times [2023-12-15 17:30:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:30:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452047095] [2023-12-15 17:30:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:30:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:30:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:30:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 17:30:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 17:30:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 17:30:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 17:30:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:30:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:30:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:30:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452047095] [2023-12-15 17:30:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452047095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:30:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:30:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:30:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028828691] [2023-12-15 17:30:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:30:20,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:30:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:30:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:30:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:30:20,880 INFO L87 Difference]: Start difference. First operand 32439 states and 53539 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 17:30:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:30:23,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:30:23,739 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1113 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:30:23,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 2637 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:30:23,740 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 17:30:23,741 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:30:23,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:30:23,747 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (32439states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (57480 states constructed, input type IntersectNwa). [2023-12-15 17:30:23,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:30:23,751 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:30:23,753 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:30:23,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:30:23 BoogieIcfgContainer [2023-12-15 17:30:23,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:30:23,756 INFO L158 Benchmark]: Toolchain (without parser) took 48208.00ms. Allocated memory was 179.3MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 103.8MB in the beginning and 763.1MB in the end (delta: -659.4MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 17:30:23,756 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 179.3MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:30:23,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2699.17ms. Allocated memory was 179.3MB in the beginning and 253.8MB in the end (delta: 74.4MB). Free memory was 103.8MB in the beginning and 93.1MB in the end (delta: 10.7MB). Peak memory consumption was 106.5MB. Max. memory is 8.0GB. [2023-12-15 17:30:23,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 514.40ms. Allocated memory is still 253.8MB. Free memory was 92.6MB in the beginning and 105.7MB in the end (delta: -13.1MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-12-15 17:30:23,757 INFO L158 Benchmark]: Boogie Preprocessor took 644.90ms. Allocated memory was 253.8MB in the beginning and 422.6MB in the end (delta: 168.8MB). Free memory was 105.7MB in the beginning and 246.7MB in the end (delta: -141.0MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-15 17:30:23,757 INFO L158 Benchmark]: RCFGBuilder took 7497.28ms. Allocated memory was 422.6MB in the beginning and 1.2GB in the end (delta: 790.6MB). Free memory was 246.7MB in the beginning and 960.3MB in the end (delta: -713.5MB). Peak memory consumption was 363.9MB. Max. memory is 8.0GB. [2023-12-15 17:30:23,757 INFO L158 Benchmark]: TraceAbstraction took 36844.82ms. Allocated memory was 1.2GB in the beginning and 2.1GB in the end (delta: 922.7MB). Free memory was 959.8MB in the beginning and 763.1MB in the end (delta: 196.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 17:30:23,758 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 179.3MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2699.17ms. Allocated memory was 179.3MB in the beginning and 253.8MB in the end (delta: 74.4MB). Free memory was 103.8MB in the beginning and 93.1MB in the end (delta: 10.7MB). Peak memory consumption was 106.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 514.40ms. Allocated memory is still 253.8MB. Free memory was 92.6MB in the beginning and 105.7MB in the end (delta: -13.1MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 644.90ms. Allocated memory was 253.8MB in the beginning and 422.6MB in the end (delta: 168.8MB). Free memory was 105.7MB in the beginning and 246.7MB in the end (delta: -141.0MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * RCFGBuilder took 7497.28ms. Allocated memory was 422.6MB in the beginning and 1.2GB in the end (delta: 790.6MB). Free memory was 246.7MB in the beginning and 960.3MB in the end (delta: -713.5MB). Peak memory consumption was 363.9MB. Max. memory is 8.0GB. * TraceAbstraction took 36844.82ms. Allocated memory was 1.2GB in the beginning and 2.1GB in the end (delta: 922.7MB). Free memory was 959.8MB in the beginning and 763.1MB in the end (delta: 196.6MB). Peak memory consumption was 1.1GB. 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: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (32439states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (57480 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 11016]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11016). Cancelled while NwaCegarLoop was constructing difference of abstraction (32439states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (57480 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2379 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 36.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57148 SdHoareTripleChecker+Valid, 19.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56940 mSDsluCounter, 236681 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 185537 mSDsCounter, 834 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25455 IncrementalHoareTripleChecker+Invalid, 26289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 834 mSolverCounterUnsat, 51144 mSDtfsCounter, 25455 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32439occurred in iteration=12, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 30313 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1573 NumberOfCodeBlocks, 1573 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1560 ConstructedInterpolants, 0 QuantifiedInterpolants, 4549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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