/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/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:43:09,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:43:09,626 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 23:43:09,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:43:09,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:43:09,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:43:09,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:43:09,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:43:09,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:43:09,667 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:43:09,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:43:09,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:43:09,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:43:09,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:43:09,670 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:43:09,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:43:09,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:43:09,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:43:09,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:43:09,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:43:09,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:43:09,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:43:09,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:43:09,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:43:09,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:43:09,674 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:43:09,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:43:09,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:43:09,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:43:09,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:43:09,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:43:09,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:43:09,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:43:09,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:43:09,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:43:09,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:43:09,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:43:09,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:43:09,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:43:09,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:43:09,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:43:09,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:43:09,940 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:43:09,940 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:43:09,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-15 23:43:11,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:43:11,393 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:43:11,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-15 23:43:11,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3cd809ee/6178214ad2624c17906f16d315285079/FLAG301d0c399 [2023-12-15 23:43:11,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3cd809ee/6178214ad2624c17906f16d315285079 [2023-12-15 23:43:11,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:43:11,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:43:11,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:43:11,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:43:11,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:43:11,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:43:11" (1/1) ... [2023-12-15 23:43:11,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e219923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:11, skipping insertion in model container [2023-12-15 23:43:11,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:43:11" (1/1) ... [2023-12-15 23:43:11,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:43:11,992 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2023-12-15 23:43:12,067 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2023-12-15 23:43:12,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:43:12,251 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:43:12,395 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2023-12-15 23:43:12,459 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2023-12-15 23:43:12,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:43:12,556 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:43:12,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12 WrapperNode [2023-12-15 23:43:12,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:43:12,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:43:12,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:43:12,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:43:12,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,692 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2684 [2023-12-15 23:43:12,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:43:12,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:43:12,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:43:12,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:43:12,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,759 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 23:43:12,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:43:12,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:43:12,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:43:12,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:43:12,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (1/1) ... [2023-12-15 23:43:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:43:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:43:12,891 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 23:43:12,903 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 23:43:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:43:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:43:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:43:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:43:13,079 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:43:13,081 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:43:14,529 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:43:14,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:43:14,631 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:43:14,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:14 BoogieIcfgContainer [2023-12-15 23:43:14,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:43:14,635 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:43:14,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:43:14,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:43:14,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:43:11" (1/3) ... [2023-12-15 23:43:14,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686c709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:14, skipping insertion in model container [2023-12-15 23:43:14,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:43:12" (2/3) ... [2023-12-15 23:43:14,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686c709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:14, skipping insertion in model container [2023-12-15 23:43:14,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:14" (3/3) ... [2023-12-15 23:43:14,642 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-15 23:43:14,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:43:14,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 23:43:14,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:43:14,720 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;@1bca11b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:43:14,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 23:43:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 669 states, 666 states have (on average 1.7972972972972974) internal successors, (1197), 668 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-15 23:43:14,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:14,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:14,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:14,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1287933947, now seen corresponding path program 1 times [2023-12-15 23:43:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094438359] [2023-12-15 23:43:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:16,102 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 23:43:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094438359] [2023-12-15 23:43:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094438359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:16,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:16,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548550755] [2023-12-15 23:43:16,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:43:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:43:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:43:16,147 INFO L87 Difference]: Start difference. First operand has 669 states, 666 states have (on average 1.7972972972972974) internal successors, (1197), 668 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:16,387 INFO L93 Difference]: Finished difference Result 1970 states and 3526 transitions. [2023-12-15 23:43:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:43:16,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2023-12-15 23:43:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:16,412 INFO L225 Difference]: With dead ends: 1970 [2023-12-15 23:43:16,412 INFO L226 Difference]: Without dead ends: 1307 [2023-12-15 23:43:16,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:16,425 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 2856 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:16,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2856 Valid, 2831 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-12-15 23:43:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1271. [2023-12-15 23:43:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1269 states have (on average 1.5681639085894405) internal successors, (1990), 1270 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1990 transitions. [2023-12-15 23:43:16,541 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1990 transitions. Word has length 242 [2023-12-15 23:43:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:16,543 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1990 transitions. [2023-12-15 23:43:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1990 transitions. [2023-12-15 23:43:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-15 23:43:16,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:16,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:16,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:43:16,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:16,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -38231727, now seen corresponding path program 1 times [2023-12-15 23:43:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893498853] [2023-12-15 23:43:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:16,780 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 23:43:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893498853] [2023-12-15 23:43:16,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893498853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:16,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:16,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092721539] [2023-12-15 23:43:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:16,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:16,790 INFO L87 Difference]: Start difference. First operand 1271 states and 1990 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:16,889 INFO L93 Difference]: Finished difference Result 3643 states and 5670 transitions. [2023-12-15 23:43:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2023-12-15 23:43:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:16,902 INFO L225 Difference]: With dead ends: 3643 [2023-12-15 23:43:16,902 INFO L226 Difference]: Without dead ends: 2496 [2023-12-15 23:43:16,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:16,906 INFO L413 NwaCegarLoop]: 2029 mSDtfsCounter, 909 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:16,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3024 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2023-12-15 23:43:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2462. [2023-12-15 23:43:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2460 states have (on average 1.5601626016260162) internal successors, (3838), 2461 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3838 transitions. [2023-12-15 23:43:16,965 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3838 transitions. Word has length 244 [2023-12-15 23:43:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:16,967 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 3838 transitions. [2023-12-15 23:43:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3838 transitions. [2023-12-15 23:43:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-15 23:43:16,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:16,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:16,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:43:16,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1917147564, now seen corresponding path program 1 times [2023-12-15 23:43:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628517611] [2023-12-15 23:43:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:17,142 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 23:43:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:17,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628517611] [2023-12-15 23:43:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628517611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:17,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:17,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137760800] [2023-12-15 23:43:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:17,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,149 INFO L87 Difference]: Start difference. First operand 2462 states and 3838 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:17,216 INFO L93 Difference]: Finished difference Result 7321 states and 11400 transitions. [2023-12-15 23:43:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2023-12-15 23:43:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:17,235 INFO L225 Difference]: With dead ends: 7321 [2023-12-15 23:43:17,235 INFO L226 Difference]: Without dead ends: 4896 [2023-12-15 23:43:17,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,244 INFO L413 NwaCegarLoop]: 2074 mSDtfsCounter, 1035 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:17,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 3109 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2023-12-15 23:43:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 2481. [2023-12-15 23:43:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2479 states have (on average 1.5594997983057683) internal successors, (3866), 2480 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3866 transitions. [2023-12-15 23:43:17,332 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3866 transitions. Word has length 244 [2023-12-15 23:43:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:17,336 INFO L495 AbstractCegarLoop]: Abstraction has 2481 states and 3866 transitions. [2023-12-15 23:43:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3866 transitions. [2023-12-15 23:43:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-15 23:43:17,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:17,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:43:17,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:17,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash -862856313, now seen corresponding path program 1 times [2023-12-15 23:43:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:17,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369961031] [2023-12-15 23:43:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:17,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:17,457 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 23:43:17,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:17,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369961031] [2023-12-15 23:43:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369961031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:17,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:17,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:17,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794181234] [2023-12-15 23:43:17,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:17,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:17,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,460 INFO L87 Difference]: Start difference. First operand 2481 states and 3866 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:17,522 INFO L93 Difference]: Finished difference Result 7340 states and 11421 transitions. [2023-12-15 23:43:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2023-12-15 23:43:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:17,541 INFO L225 Difference]: With dead ends: 7340 [2023-12-15 23:43:17,542 INFO L226 Difference]: Without dead ends: 4914 [2023-12-15 23:43:17,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,552 INFO L413 NwaCegarLoop]: 2074 mSDtfsCounter, 1030 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:17,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 3109 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2023-12-15 23:43:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 2499. [2023-12-15 23:43:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2497 states have (on average 1.5566680016019223) internal successors, (3887), 2498 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 3887 transitions. [2023-12-15 23:43:17,636 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 3887 transitions. Word has length 245 [2023-12-15 23:43:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 2499 states and 3887 transitions. [2023-12-15 23:43:17,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 3887 transitions. [2023-12-15 23:43:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-15 23:43:17,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:17,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:17,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:43:17,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:17,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -822098129, now seen corresponding path program 1 times [2023-12-15 23:43:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537939173] [2023-12-15 23:43:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:17,794 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 23:43:17,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537939173] [2023-12-15 23:43:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537939173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:17,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560923749] [2023-12-15 23:43:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:17,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,797 INFO L87 Difference]: Start difference. First operand 2499 states and 3887 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:17,900 INFO L93 Difference]: Finished difference Result 5028 states and 7861 transitions. [2023-12-15 23:43:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:17,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-12-15 23:43:17,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:17,915 INFO L225 Difference]: With dead ends: 5028 [2023-12-15 23:43:17,915 INFO L226 Difference]: Without dead ends: 3347 [2023-12-15 23:43:17,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:17,919 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 536 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:17,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 2227 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2023-12-15 23:43:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2987. [2023-12-15 23:43:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2985 states have (on average 1.5721943048576215) internal successors, (4693), 2986 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 4693 transitions. [2023-12-15 23:43:17,997 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 4693 transitions. Word has length 246 [2023-12-15 23:43:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:17,998 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 4693 transitions. [2023-12-15 23:43:17,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 4693 transitions. [2023-12-15 23:43:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-15 23:43:18,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:18,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:18,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:43:18,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:18,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash -11177770, now seen corresponding path program 1 times [2023-12-15 23:43:18,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872786679] [2023-12-15 23:43:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:18,170 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 23:43:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872786679] [2023-12-15 23:43:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872786679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074107005] [2023-12-15 23:43:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:18,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:18,173 INFO L87 Difference]: Start difference. First operand 2987 states and 4693 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:18,294 INFO L93 Difference]: Finished difference Result 8511 states and 13312 transitions. [2023-12-15 23:43:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-12-15 23:43:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:18,316 INFO L225 Difference]: With dead ends: 8511 [2023-12-15 23:43:18,317 INFO L226 Difference]: Without dead ends: 5764 [2023-12-15 23:43:18,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:18,324 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 900 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:18,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 3022 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2023-12-15 23:43:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5732. [2023-12-15 23:43:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5730 states have (on average 1.5614310645724259) internal successors, (8947), 5731 states have internal predecessors, (8947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 8947 transitions. [2023-12-15 23:43:18,464 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 8947 transitions. Word has length 246 [2023-12-15 23:43:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:18,464 INFO L495 AbstractCegarLoop]: Abstraction has 5732 states and 8947 transitions. [2023-12-15 23:43:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 8947 transitions. [2023-12-15 23:43:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-15 23:43:18,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:18,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:43:18,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:18,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1537046233, now seen corresponding path program 1 times [2023-12-15 23:43:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805712468] [2023-12-15 23:43:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:18,939 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 23:43:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805712468] [2023-12-15 23:43:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805712468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:18,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:18,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:43:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910183543] [2023-12-15 23:43:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:43:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:43:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:18,941 INFO L87 Difference]: Start difference. First operand 5732 states and 8947 transitions. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:19,108 INFO L93 Difference]: Finished difference Result 16703 states and 26034 transitions. [2023-12-15 23:43:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:43:19,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-12-15 23:43:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:19,139 INFO L225 Difference]: With dead ends: 16703 [2023-12-15 23:43:19,139 INFO L226 Difference]: Without dead ends: 11025 [2023-12-15 23:43:19,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:19,152 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 2006 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:19,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 3667 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11025 states. [2023-12-15 23:43:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11025 to 10998. [2023-12-15 23:43:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10996 states have (on average 1.5488359403419425) internal successors, (17031), 10997 states have internal predecessors, (17031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 17031 transitions. [2023-12-15 23:43:19,472 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 17031 transitions. Word has length 246 [2023-12-15 23:43:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:19,473 INFO L495 AbstractCegarLoop]: Abstraction has 10998 states and 17031 transitions. [2023-12-15 23:43:19,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 17031 transitions. [2023-12-15 23:43:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-15 23:43:19,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:19,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:19,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:43:19,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:19,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1544079654, now seen corresponding path program 1 times [2023-12-15 23:43:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:19,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328454837] [2023-12-15 23:43:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:19,993 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 23:43:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328454837] [2023-12-15 23:43:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328454837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:19,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:19,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:43:19,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772340500] [2023-12-15 23:43:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:19,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:43:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:43:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:19,995 INFO L87 Difference]: Start difference. First operand 10998 states and 17031 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:20,269 INFO L93 Difference]: Finished difference Result 31844 states and 49210 transitions. [2023-12-15 23:43:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:43:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-15 23:43:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:20,312 INFO L225 Difference]: With dead ends: 31844 [2023-12-15 23:43:20,313 INFO L226 Difference]: Without dead ends: 20962 [2023-12-15 23:43:20,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:20,333 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 1998 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 3661 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20962 states. [2023-12-15 23:43:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20962 to 20944. [2023-12-15 23:43:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20944 states, 20942 states have (on average 1.534858179734505) internal successors, (32143), 20943 states have internal predecessors, (32143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20944 states to 20944 states and 32143 transitions. [2023-12-15 23:43:20,732 INFO L78 Accepts]: Start accepts. Automaton has 20944 states and 32143 transitions. Word has length 248 [2023-12-15 23:43:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:20,733 INFO L495 AbstractCegarLoop]: Abstraction has 20944 states and 32143 transitions. [2023-12-15 23:43:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 20944 states and 32143 transitions. [2023-12-15 23:43:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-15 23:43:20,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:20,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:20,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:43:20,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:20,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash -283818953, now seen corresponding path program 1 times [2023-12-15 23:43:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566076541] [2023-12-15 23:43:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:20,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:21,262 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 23:43:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566076541] [2023-12-15 23:43:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566076541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:21,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:21,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252288104] [2023-12-15 23:43:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:21,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:43:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:43:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:43:21,265 INFO L87 Difference]: Start difference. First operand 20944 states and 32143 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:21,679 INFO L93 Difference]: Finished difference Result 61620 states and 94436 transitions. [2023-12-15 23:43:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:43:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-15 23:43:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:21,759 INFO L225 Difference]: With dead ends: 61620 [2023-12-15 23:43:21,760 INFO L226 Difference]: Without dead ends: 40905 [2023-12-15 23:43:21,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:21,784 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 2310 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:21,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 2573 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40905 states. [2023-12-15 23:43:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40905 to 40736. [2023-12-15 23:43:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40736 states, 40734 states have (on average 1.5237148328177934) internal successors, (62067), 40735 states have internal predecessors, (62067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40736 states to 40736 states and 62067 transitions. [2023-12-15 23:43:22,608 INFO L78 Accepts]: Start accepts. Automaton has 40736 states and 62067 transitions. Word has length 248 [2023-12-15 23:43:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:22,608 INFO L495 AbstractCegarLoop]: Abstraction has 40736 states and 62067 transitions. [2023-12-15 23:43:22,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40736 states and 62067 transitions. [2023-12-15 23:43:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-15 23:43:22,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:22,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:22,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:43:22,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:22,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash -272656906, now seen corresponding path program 1 times [2023-12-15 23:43:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989664207] [2023-12-15 23:43:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:22,833 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 23:43:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989664207] [2023-12-15 23:43:22,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989664207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:22,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:22,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016685227] [2023-12-15 23:43:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:22,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:22,836 INFO L87 Difference]: Start difference. First operand 40736 states and 62067 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:23,530 INFO L93 Difference]: Finished difference Result 119186 states and 181155 transitions. [2023-12-15 23:43:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2023-12-15 23:43:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:23,721 INFO L225 Difference]: With dead ends: 119186 [2023-12-15 23:43:23,721 INFO L226 Difference]: Without dead ends: 79829 [2023-12-15 23:43:23,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:23,841 INFO L413 NwaCegarLoop]: 1986 mSDtfsCounter, 882 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:23,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2982 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79829 states. [2023-12-15 23:43:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79829 to 79660. [2023-12-15 23:43:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79660 states, 79658 states have (on average 1.5137337116171634) internal successors, (120581), 79659 states have internal predecessors, (120581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79660 states to 79660 states and 120581 transitions. [2023-12-15 23:43:25,507 INFO L78 Accepts]: Start accepts. Automaton has 79660 states and 120581 transitions. Word has length 250 [2023-12-15 23:43:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:25,508 INFO L495 AbstractCegarLoop]: Abstraction has 79660 states and 120581 transitions. [2023-12-15 23:43:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 79660 states and 120581 transitions. [2023-12-15 23:43:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-15 23:43:25,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:25,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:25,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:43:25,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:25,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1729597807, now seen corresponding path program 1 times [2023-12-15 23:43:25,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:25,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69505043] [2023-12-15 23:43:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:25,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:25,815 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 23:43:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69505043] [2023-12-15 23:43:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69505043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352863817] [2023-12-15 23:43:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:25,818 INFO L87 Difference]: Start difference. First operand 79660 states and 120581 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:26,668 INFO L93 Difference]: Finished difference Result 237858 states and 359921 transitions. [2023-12-15 23:43:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:26,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2023-12-15 23:43:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:26,951 INFO L225 Difference]: With dead ends: 237858 [2023-12-15 23:43:26,952 INFO L226 Difference]: Without dead ends: 158859 [2023-12-15 23:43:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:27,017 INFO L413 NwaCegarLoop]: 2035 mSDtfsCounter, 999 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:27,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 3067 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158859 states. [2023-12-15 23:43:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158859 to 79870. [2023-12-15 23:43:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79870 states, 79868 states have (on average 1.5136600390644563) internal successors, (120893), 79869 states have internal predecessors, (120893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79870 states to 79870 states and 120893 transitions. [2023-12-15 23:43:28,808 INFO L78 Accepts]: Start accepts. Automaton has 79870 states and 120893 transitions. Word has length 250 [2023-12-15 23:43:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:28,808 INFO L495 AbstractCegarLoop]: Abstraction has 79870 states and 120893 transitions. [2023-12-15 23:43:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 79870 states and 120893 transitions. [2023-12-15 23:43:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 23:43:29,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:29,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:29,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:43:29,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:29,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1413627848, now seen corresponding path program 1 times [2023-12-15 23:43:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605195815] [2023-12-15 23:43:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:29,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:29,280 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 23:43:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605195815] [2023-12-15 23:43:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605195815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:29,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:29,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348155586] [2023-12-15 23:43:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:29,283 INFO L87 Difference]: Start difference. First operand 79870 states and 120893 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:30,214 INFO L93 Difference]: Finished difference Result 238046 states and 360127 transitions. [2023-12-15 23:43:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2023-12-15 23:43:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:30,456 INFO L225 Difference]: With dead ends: 238046 [2023-12-15 23:43:30,457 INFO L226 Difference]: Without dead ends: 159037 [2023-12-15 23:43:30,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:30,545 INFO L413 NwaCegarLoop]: 2035 mSDtfsCounter, 994 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:30,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 3067 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159037 states. [2023-12-15 23:43:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159037 to 80100. [2023-12-15 23:43:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80100 states, 80098 states have (on average 1.5126095532972108) internal successors, (121157), 80099 states have internal predecessors, (121157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80100 states to 80100 states and 121157 transitions. [2023-12-15 23:43:32,464 INFO L78 Accepts]: Start accepts. Automaton has 80100 states and 121157 transitions. Word has length 251 [2023-12-15 23:43:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:32,464 INFO L495 AbstractCegarLoop]: Abstraction has 80100 states and 121157 transitions. [2023-12-15 23:43:32,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 80100 states and 121157 transitions. [2023-12-15 23:43:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 23:43:32,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:32,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:32,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:43:32,566 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:32,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 146216190, now seen corresponding path program 1 times [2023-12-15 23:43:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144540973] [2023-12-15 23:43:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:33,039 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 23:43:33,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:33,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144540973] [2023-12-15 23:43:33,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144540973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:33,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:33,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:43:33,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403765232] [2023-12-15 23:43:33,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:33,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:43:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:33,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:43:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:33,042 INFO L87 Difference]: Start difference. First operand 80100 states and 121157 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:34,016 INFO L93 Difference]: Finished difference Result 234495 states and 354018 transitions. [2023-12-15 23:43:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:43:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2023-12-15 23:43:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:34,560 INFO L225 Difference]: With dead ends: 234495 [2023-12-15 23:43:34,560 INFO L226 Difference]: Without dead ends: 154975 [2023-12-15 23:43:34,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:34,621 INFO L413 NwaCegarLoop]: 1474 mSDtfsCounter, 2521 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:34,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 3438 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154975 states. [2023-12-15 23:43:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154975 to 154944. [2023-12-15 23:43:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154944 states, 154942 states have (on average 1.4990835280298433) internal successors, (232271), 154943 states have internal predecessors, (232271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154944 states to 154944 states and 232271 transitions. [2023-12-15 23:43:37,065 INFO L78 Accepts]: Start accepts. Automaton has 154944 states and 232271 transitions. Word has length 252 [2023-12-15 23:43:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:37,066 INFO L495 AbstractCegarLoop]: Abstraction has 154944 states and 232271 transitions. [2023-12-15 23:43:37,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 154944 states and 232271 transitions. [2023-12-15 23:43:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 23:43:37,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:37,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:43:37,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:37,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1693300014, now seen corresponding path program 1 times [2023-12-15 23:43:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089327469] [2023-12-15 23:43:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:37,666 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 23:43:37,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:37,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089327469] [2023-12-15 23:43:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089327469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:37,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:37,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505906339] [2023-12-15 23:43:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:37,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:43:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:43:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:43:37,669 INFO L87 Difference]: Start difference. First operand 154944 states and 232271 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:39,128 INFO L93 Difference]: Finished difference Result 330387 states and 494341 transitions. [2023-12-15 23:43:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:43:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-12-15 23:43:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:39,362 INFO L225 Difference]: With dead ends: 330387 [2023-12-15 23:43:39,362 INFO L226 Difference]: Without dead ends: 177060 [2023-12-15 23:43:39,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:43:39,402 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 2462 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:39,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 2374 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177060 states. [2023-12-15 23:43:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177060 to 155179. [2023-12-15 23:43:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155179 states, 155177 states have (on average 1.4980119476468807) internal successors, (232457), 155178 states have internal predecessors, (232457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155179 states to 155179 states and 232457 transitions. [2023-12-15 23:43:41,989 INFO L78 Accepts]: Start accepts. Automaton has 155179 states and 232457 transitions. Word has length 254 [2023-12-15 23:43:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:41,989 INFO L495 AbstractCegarLoop]: Abstraction has 155179 states and 232457 transitions. [2023-12-15 23:43:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 155179 states and 232457 transitions. [2023-12-15 23:43:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 23:43:42,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:42,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:42,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:43:42,181 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:42,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash 901405425, now seen corresponding path program 1 times [2023-12-15 23:43:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287870234] [2023-12-15 23:43:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:42,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:42,281 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 23:43:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287870234] [2023-12-15 23:43:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287870234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835678135] [2023-12-15 23:43:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:42,284 INFO L87 Difference]: Start difference. First operand 155179 states and 232457 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:43,744 INFO L93 Difference]: Finished difference Result 459195 states and 687394 transitions. [2023-12-15 23:43:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2023-12-15 23:43:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:44,534 INFO L225 Difference]: With dead ends: 459195 [2023-12-15 23:43:44,534 INFO L226 Difference]: Without dead ends: 306493 [2023-12-15 23:43:44,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:44,626 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 966 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:44,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 3034 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306493 states. [2023-12-15 23:43:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306493 to 155652. [2023-12-15 23:43:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155652 states, 155650 states have (on average 1.497192418888532) internal successors, (233038), 155651 states have internal predecessors, (233038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155652 states to 155652 states and 233038 transitions. [2023-12-15 23:43:48,191 INFO L78 Accepts]: Start accepts. Automaton has 155652 states and 233038 transitions. Word has length 256 [2023-12-15 23:43:48,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:48,191 INFO L495 AbstractCegarLoop]: Abstraction has 155652 states and 233038 transitions. [2023-12-15 23:43:48,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 155652 states and 233038 transitions. [2023-12-15 23:43:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-15 23:43:48,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:48,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:43:48,330 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:48,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1935268654, now seen corresponding path program 1 times [2023-12-15 23:43:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346096607] [2023-12-15 23:43:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:48,422 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 23:43:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346096607] [2023-12-15 23:43:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346096607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:48,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616146903] [2023-12-15 23:43:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:48,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:48,426 INFO L87 Difference]: Start difference. First operand 155652 states and 233038 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:50,209 INFO L93 Difference]: Finished difference Result 461614 states and 690953 transitions. [2023-12-15 23:43:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2023-12-15 23:43:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:50,757 INFO L225 Difference]: With dead ends: 461614 [2023-12-15 23:43:50,757 INFO L226 Difference]: Without dead ends: 308550 [2023-12-15 23:43:50,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:50,864 INFO L413 NwaCegarLoop]: 2002 mSDtfsCounter, 961 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:50,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 3034 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:43:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308550 states. [2023-12-15 23:43:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308550 to 156337. [2023-12-15 23:43:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156337 states, 156335 states have (on average 1.4957750983464995) internal successors, (233842), 156336 states have internal predecessors, (233842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156337 states to 156337 states and 233842 transitions. [2023-12-15 23:43:53,965 INFO L78 Accepts]: Start accepts. Automaton has 156337 states and 233842 transitions. Word has length 257 [2023-12-15 23:43:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:43:53,965 INFO L495 AbstractCegarLoop]: Abstraction has 156337 states and 233842 transitions. [2023-12-15 23:43:53,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 156337 states and 233842 transitions. [2023-12-15 23:43:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 23:43:54,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:43:54,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:54,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:43:54,665 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:43:54,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:43:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1471755521, now seen corresponding path program 1 times [2023-12-15 23:43:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:43:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528435944] [2023-12-15 23:43:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:43:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:43:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:43:54,919 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 23:43:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:43:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528435944] [2023-12-15 23:43:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528435944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:43:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:43:54,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:43:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730010180] [2023-12-15 23:43:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:43:54,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:43:54,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:43:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:43:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:54,921 INFO L87 Difference]: Start difference. First operand 156337 states and 233842 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:43:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:43:56,334 INFO L93 Difference]: Finished difference Result 334932 states and 509480 transitions. [2023-12-15 23:43:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:43:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2023-12-15 23:43:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:43:56,713 INFO L225 Difference]: With dead ends: 334932 [2023-12-15 23:43:56,713 INFO L226 Difference]: Without dead ends: 223075 [2023-12-15 23:43:56,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:43:56,817 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 538 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:43:56,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 2207 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:43:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223075 states. [2023-12-15 23:43:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223075 to 203793. [2023-12-15 23:43:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203793 states, 203791 states have (on average 1.5251016973271636) internal successors, (310802), 203792 states have internal predecessors, (310802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:44:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203793 states to 203793 states and 310802 transitions. [2023-12-15 23:44:00,280 INFO L78 Accepts]: Start accepts. Automaton has 203793 states and 310802 transitions. Word has length 258 [2023-12-15 23:44:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:44:00,280 INFO L495 AbstractCegarLoop]: Abstraction has 203793 states and 310802 transitions. [2023-12-15 23:44:00,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:44:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 203793 states and 310802 transitions. [2023-12-15 23:44:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 23:44:00,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:44:00,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:00,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:44:00,409 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:44:00,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:44:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 826456228, now seen corresponding path program 1 times [2023-12-15 23:44:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:44:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513042029] [2023-12-15 23:44:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:44:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:44:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:44:00,512 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 23:44:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:44:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513042029] [2023-12-15 23:44:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513042029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:44:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:44:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:44:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336902206] [2023-12-15 23:44:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:44:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:44:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:44:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:44:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:44:00,514 INFO L87 Difference]: Start difference. First operand 203793 states and 310802 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:44:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:44:01,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:44:01,274 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 189 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:44:01,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1080 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:44:01,276 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 23:44:01,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:44:01,277 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (203793states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (119420 states constructed, input type IntersectNwa). [2023-12-15 23:44:01,278 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 23:44:01,280 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:44:01,282 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:44:01,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:44:01 BoogieIcfgContainer [2023-12-15 23:44:01,284 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:44:01,284 INFO L158 Benchmark]: Toolchain (without parser) took 49842.33ms. Allocated memory was 270.5MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 218.4MB in the beginning and 6.6GB in the end (delta: -6.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 23:44:01,284 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 180.4MB. Free memory was 133.1MB in the beginning and 133.0MB in the end (delta: 143.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:44:01,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1116.12ms. Allocated memory is still 270.5MB. Free memory was 218.0MB in the beginning and 225.0MB in the end (delta: -7.0MB). Peak memory consumption was 53.3MB. Max. memory is 8.0GB. [2023-12-15 23:44:01,285 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.69ms. Allocated memory is still 270.5MB. Free memory was 225.0MB in the beginning and 212.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 23:44:01,285 INFO L158 Benchmark]: Boogie Preprocessor took 165.49ms. Allocated memory is still 270.5MB. Free memory was 212.4MB in the beginning and 201.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 23:44:01,285 INFO L158 Benchmark]: RCFGBuilder took 1772.56ms. Allocated memory is still 270.5MB. Free memory was 201.4MB in the beginning and 220.9MB in the end (delta: -19.5MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. [2023-12-15 23:44:01,285 INFO L158 Benchmark]: TraceAbstraction took 46648.29ms. Allocated memory was 270.5MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 220.4MB in the beginning and 6.6GB in the end (delta: -6.4GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 23:44:01,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 180.4MB. Free memory was 133.1MB in the beginning and 133.0MB in the end (delta: 143.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1116.12ms. Allocated memory is still 270.5MB. Free memory was 218.0MB in the beginning and 225.0MB in the end (delta: -7.0MB). Peak memory consumption was 53.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 132.69ms. Allocated memory is still 270.5MB. Free memory was 225.0MB in the beginning and 212.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 165.49ms. Allocated memory is still 270.5MB. Free memory was 212.4MB in the beginning and 201.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1772.56ms. Allocated memory is still 270.5MB. Free memory was 201.4MB in the beginning and 220.9MB in the end (delta: -19.5MB). Peak memory consumption was 121.6MB. Max. memory is 8.0GB. * TraceAbstraction took 46648.29ms. Allocated memory was 270.5MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 220.4MB in the beginning and 6.6GB in the end (delta: -6.4GB). Peak memory consumption was 1.5GB. 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: 1505]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1505). Cancelled while NwaCegarLoop was constructing difference of abstraction (203793states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (119420 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1851]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1851). Cancelled while NwaCegarLoop was constructing difference of abstraction (203793states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (119420 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 669 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.6s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 2.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24092 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24092 mSDsluCounter, 51506 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20265 mSDsCounter, 245 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 502 IncrementalHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 245 mSolverCounterUnsat, 31241 mSDtfsCounter, 502 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203793occurred in iteration=17, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 507849 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 4495 NumberOfCodeBlocks, 4495 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4477 ConstructedInterpolants, 0 QuantifiedInterpolants, 11648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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