/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:37:17,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:37:17,934 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:37:17,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:37:17,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:37:17,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:37:17,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:37:17,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:37:17,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:37:17,964 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:37:17,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:37:17,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:37:17,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:37:17,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:37:17,966 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:37:17,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:37:17,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:37:17,966 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:37:17,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:37:17,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:37:17,968 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:37:17,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:37:17,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:37:17,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:37:17,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:37:17,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:37:17,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:37:17,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:37:17,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:37:17,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:37:17,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:37:17,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:37:17,971 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:37:18,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:37:18,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:37:18,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:37:18,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:37:18,149 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:37:18,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c [2023-12-15 17:37:19,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:37:19,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:37:19,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c [2023-12-15 17:37:19,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6b43ade/b7c439da3d304d9885a13353ac011852/FLAG778c4be95 [2023-12-15 17:37:19,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6b43ade/b7c439da3d304d9885a13353ac011852 [2023-12-15 17:37:19,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:37:19,710 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:37:19,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:37:19,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:37:19,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:37:19,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:37:19" (1/1) ... [2023-12-15 17:37:19,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bcef5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:19, skipping insertion in model container [2023-12-15 17:37:19,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:37:19" (1/1) ... [2023-12-15 17:37:19,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:37:21,045 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2023-12-15 17:37:21,073 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2023-12-15 17:37:21,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:37:21,271 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:37:21,849 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2023-12-15 17:37:21,853 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2023-12-15 17:37:21,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:37:21,920 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:37:21,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21 WrapperNode [2023-12-15 17:37:21,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:37:21,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:37:21,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:37:21,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:37:21,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:21,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,276 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13053 [2023-12-15 17:37:22,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:37:22,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:37:22,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:37:22,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:37:22,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,402 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 17:37:22,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:37:22,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:37:22,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:37:22,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:37:22,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (1/1) ... [2023-12-15 17:37:22,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:37:22,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:37:22,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:37:22,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:37:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:37:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:37:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:37:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:37:22,949 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:37:22,950 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:37:28,197 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:37:28,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:37:28,269 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 17:37:28,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:37:28 BoogieIcfgContainer [2023-12-15 17:37:28,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:37:28,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:37:28,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:37:28,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:37:28,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:37:19" (1/3) ... [2023-12-15 17:37:28,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10879022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:37:28, skipping insertion in model container [2023-12-15 17:37:28,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:21" (2/3) ... [2023-12-15 17:37:28,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10879022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:37:28, skipping insertion in model container [2023-12-15 17:37:28,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:37:28" (3/3) ... [2023-12-15 17:37:28,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-1.c [2023-12-15 17:37:28,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:37:28,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:37:28,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:37:28,342 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;@33e42e5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:37:28,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:37:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-15 17:37:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:28,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:28,365 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] [2023-12-15 17:37:28,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:28,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1068721783, now seen corresponding path program 1 times [2023-12-15 17:37:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524783200] [2023-12-15 17:37:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524783200] [2023-12-15 17:37:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524783200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:37:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401721550] [2023-12-15 17:37:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:37:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:28,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:37:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:37:28,831 INFO L87 Difference]: Start difference. First operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:30,099 INFO L93 Difference]: Finished difference Result 4898 states and 9162 transitions. [2023-12-15 17:37:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:37:30,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:30,117 INFO L225 Difference]: With dead ends: 4898 [2023-12-15 17:37:30,118 INFO L226 Difference]: Without dead ends: 2498 [2023-12-15 17:37:30,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:37:30,126 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 764 mSDsluCounter, 12138 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:30,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 16338 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:37:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2023-12-15 17:37:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2398. [2023-12-15 17:37:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2367 states have (on average 1.8411491339247994) internal successors, (4358), 2369 states have internal predecessors, (4358), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-15 17:37:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4404 transitions. [2023-12-15 17:37:30,218 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4404 transitions. Word has length 131 [2023-12-15 17:37:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:30,219 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4404 transitions. [2023-12-15 17:37:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4404 transitions. [2023-12-15 17:37:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:30,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:30,221 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] [2023-12-15 17:37:30,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:37:30,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:30,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash 981687115, now seen corresponding path program 1 times [2023-12-15 17:37:30,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:30,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486114864] [2023-12-15 17:37:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:30,422 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 17:37:30,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486114864] [2023-12-15 17:37:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486114864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:30,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:30,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:37:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328550787] [2023-12-15 17:37:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:30,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:37:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:37:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:37:30,426 INFO L87 Difference]: Start difference. First operand 2398 states and 4404 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:32,372 INFO L93 Difference]: Finished difference Result 3135 states and 5628 transitions. [2023-12-15 17:37:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:37:32,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:32,382 INFO L225 Difference]: With dead ends: 3135 [2023-12-15 17:37:32,382 INFO L226 Difference]: Without dead ends: 2873 [2023-12-15 17:37:32,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:37:32,384 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 5107 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5123 SdHoareTripleChecker+Valid, 16669 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:32,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5123 Valid, 16669 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 17:37:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2023-12-15 17:37:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2674. [2023-12-15 17:37:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8216195569136746) internal successors, (4769), 2621 states have internal predecessors, (4769), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-15 17:37:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4854 transitions. [2023-12-15 17:37:32,499 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4854 transitions. Word has length 131 [2023-12-15 17:37:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:32,500 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4854 transitions. [2023-12-15 17:37:32,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4854 transitions. [2023-12-15 17:37:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:32,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:32,502 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] [2023-12-15 17:37:32,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:37:32,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:32,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash -926603697, now seen corresponding path program 1 times [2023-12-15 17:37:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606707473] [2023-12-15 17:37:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:32,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:32,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606707473] [2023-12-15 17:37:32,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606707473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:32,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:32,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27117415] [2023-12-15 17:37:32,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:32,730 INFO L87 Difference]: Start difference. First operand 2674 states and 4854 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:35,222 INFO L93 Difference]: Finished difference Result 3800 states and 6722 transitions. [2023-12-15 17:37:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:35,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:35,234 INFO L225 Difference]: With dead ends: 3800 [2023-12-15 17:37:35,234 INFO L226 Difference]: Without dead ends: 3262 [2023-12-15 17:37:35,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:37:35,241 INFO L413 NwaCegarLoop]: 4330 mSDtfsCounter, 5140 mSDsluCounter, 17046 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:35,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 21376 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:37:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2023-12-15 17:37:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2929. [2023-12-15 17:37:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8040730337078652) internal successors, (5138), 2852 states have internal predecessors, (5138), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5261 transitions. [2023-12-15 17:37:35,312 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5261 transitions. Word has length 131 [2023-12-15 17:37:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:35,314 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5261 transitions. [2023-12-15 17:37:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5261 transitions. [2023-12-15 17:37:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:35,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:35,317 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] [2023-12-15 17:37:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:37:35,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:35,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash -455247347, now seen corresponding path program 1 times [2023-12-15 17:37:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440030056] [2023-12-15 17:37:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:35,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:35,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440030056] [2023-12-15 17:37:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440030056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:35,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:35,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079875756] [2023-12-15 17:37:35,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:35,581 INFO L87 Difference]: Start difference. First operand 2929 states and 5261 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:36,841 INFO L93 Difference]: Finished difference Result 4067 states and 7159 transitions. [2023-12-15 17:37:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:36,851 INFO L225 Difference]: With dead ends: 4067 [2023-12-15 17:37:36,851 INFO L226 Difference]: Without dead ends: 3274 [2023-12-15 17:37:36,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:37:36,858 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4804 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 20600 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 20600 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:37:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2023-12-15 17:37:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2929. [2023-12-15 17:37:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8030196629213484) internal successors, (5135), 2852 states have internal predecessors, (5135), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5258 transitions. [2023-12-15 17:37:36,929 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5258 transitions. Word has length 131 [2023-12-15 17:37:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:36,930 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5258 transitions. [2023-12-15 17:37:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5258 transitions. [2023-12-15 17:37:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:36,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:36,932 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] [2023-12-15 17:37:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:37:36,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:36,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1708369227, now seen corresponding path program 1 times [2023-12-15 17:37:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606268146] [2023-12-15 17:37:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:37,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606268146] [2023-12-15 17:37:37,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606268146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:37,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:37,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354298889] [2023-12-15 17:37:37,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:37,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:37,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:37,102 INFO L87 Difference]: Start difference. First operand 2929 states and 5258 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:38,152 INFO L93 Difference]: Finished difference Result 4063 states and 7142 transitions. [2023-12-15 17:37:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:38,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:38,163 INFO L225 Difference]: With dead ends: 4063 [2023-12-15 17:37:38,163 INFO L226 Difference]: Without dead ends: 3270 [2023-12-15 17:37:38,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:37:38,166 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4921 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4938 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:38,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4938 Valid, 16513 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:37:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2023-12-15 17:37:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2929. [2023-12-15 17:37:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8019662921348314) internal successors, (5132), 2852 states have internal predecessors, (5132), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5255 transitions. [2023-12-15 17:37:38,225 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5255 transitions. Word has length 131 [2023-12-15 17:37:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:38,225 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5255 transitions. [2023-12-15 17:37:38,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5255 transitions. [2023-12-15 17:37:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:38,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:38,227 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] [2023-12-15 17:37:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:37:38,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:38,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 669784653, now seen corresponding path program 1 times [2023-12-15 17:37:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838536173] [2023-12-15 17:37:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838536173] [2023-12-15 17:37:38,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838536173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:38,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:38,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:38,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270214050] [2023-12-15 17:37:38,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:38,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:38,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:38,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:38,478 INFO L87 Difference]: Start difference. First operand 2929 states and 5255 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:39,516 INFO L93 Difference]: Finished difference Result 4059 states and 7125 transitions. [2023-12-15 17:37:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:39,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:39,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:39,527 INFO L225 Difference]: With dead ends: 4059 [2023-12-15 17:37:39,527 INFO L226 Difference]: Without dead ends: 3266 [2023-12-15 17:37:39,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:37:39,530 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4919 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:39,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 16513 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:37:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2023-12-15 17:37:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2929. [2023-12-15 17:37:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8009129213483146) internal successors, (5129), 2852 states have internal predecessors, (5129), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5252 transitions. [2023-12-15 17:37:39,606 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5252 transitions. Word has length 131 [2023-12-15 17:37:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:39,607 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5252 transitions. [2023-12-15 17:37:39,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5252 transitions. [2023-12-15 17:37:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:39,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:39,609 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] [2023-12-15 17:37:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:37:39,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:39,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1303380725, now seen corresponding path program 1 times [2023-12-15 17:37:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854210460] [2023-12-15 17:37:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854210460] [2023-12-15 17:37:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854210460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:39,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:39,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685042320] [2023-12-15 17:37:39,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:39,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:39,793 INFO L87 Difference]: Start difference. First operand 2929 states and 5252 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:41,953 INFO L93 Difference]: Finished difference Result 4761 states and 8249 transitions. [2023-12-15 17:37:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:41,972 INFO L225 Difference]: With dead ends: 4761 [2023-12-15 17:37:41,973 INFO L226 Difference]: Without dead ends: 3968 [2023-12-15 17:37:41,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:37:41,977 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 5191 mSDsluCounter, 16647 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:41,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 20827 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 17:37:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-12-15 17:37:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3452. [2023-12-15 17:37:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3321 states have (on average 1.7705510388437218) internal successors, (5880), 3327 states have internal predecessors, (5880), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-15 17:37:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 6083 transitions. [2023-12-15 17:37:42,082 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 6083 transitions. Word has length 131 [2023-12-15 17:37:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:42,082 INFO L495 AbstractCegarLoop]: Abstraction has 3452 states and 6083 transitions. [2023-12-15 17:37:42,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 6083 transitions. [2023-12-15 17:37:42,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:42,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:42,084 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] [2023-12-15 17:37:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:37:42,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:42,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 849726093, now seen corresponding path program 1 times [2023-12-15 17:37:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076578573] [2023-12-15 17:37:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076578573] [2023-12-15 17:37:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076578573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:42,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043857119] [2023-12-15 17:37:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:42,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:42,259 INFO L87 Difference]: Start difference. First operand 3452 states and 6083 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:43,334 INFO L93 Difference]: Finished difference Result 5271 states and 9068 transitions. [2023-12-15 17:37:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:43,351 INFO L225 Difference]: With dead ends: 5271 [2023-12-15 17:37:43,351 INFO L226 Difference]: Without dead ends: 3955 [2023-12-15 17:37:43,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:37:43,357 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4918 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:43,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4935 Valid, 16513 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:37:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2023-12-15 17:37:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3452. [2023-12-15 17:37:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3321 states have (on average 1.7690454682324601) internal successors, (5875), 3327 states have internal predecessors, (5875), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-15 17:37:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 6078 transitions. [2023-12-15 17:37:43,456 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 6078 transitions. Word has length 131 [2023-12-15 17:37:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:43,456 INFO L495 AbstractCegarLoop]: Abstraction has 3452 states and 6078 transitions. [2023-12-15 17:37:43,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 6078 transitions. [2023-12-15 17:37:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:43,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:43,458 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] [2023-12-15 17:37:43,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:37:43,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:43,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash 226444491, now seen corresponding path program 1 times [2023-12-15 17:37:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910523027] [2023-12-15 17:37:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910523027] [2023-12-15 17:37:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910523027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432504828] [2023-12-15 17:37:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:43,639 INFO L87 Difference]: Start difference. First operand 3452 states and 6078 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:46,091 INFO L93 Difference]: Finished difference Result 6630 states and 11232 transitions. [2023-12-15 17:37:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:46,107 INFO L225 Difference]: With dead ends: 6630 [2023-12-15 17:37:46,107 INFO L226 Difference]: Without dead ends: 5314 [2023-12-15 17:37:46,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:37:46,114 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 5105 mSDsluCounter, 17046 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5121 SdHoareTripleChecker+Valid, 21374 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:46,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5121 Valid, 21374 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:37:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2023-12-15 17:37:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4498. [2023-12-15 17:37:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4267 states have (on average 1.7265057417389267) internal successors, (7367), 4277 states have internal predecessors, (7367), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-15 17:37:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 7736 transitions. [2023-12-15 17:37:46,223 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 7736 transitions. Word has length 131 [2023-12-15 17:37:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:46,223 INFO L495 AbstractCegarLoop]: Abstraction has 4498 states and 7736 transitions. [2023-12-15 17:37:46,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 7736 transitions. [2023-12-15 17:37:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:46,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:46,225 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] [2023-12-15 17:37:46,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:37:46,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:46,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash 344885965, now seen corresponding path program 1 times [2023-12-15 17:37:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:46,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628777075] [2023-12-15 17:37:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:46,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628777075] [2023-12-15 17:37:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628777075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:46,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644051822] [2023-12-15 17:37:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:46,384 INFO L87 Difference]: Start difference. First operand 4498 states and 7736 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:48,865 INFO L93 Difference]: Finished difference Result 10374 states and 17252 transitions. [2023-12-15 17:37:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:48,882 INFO L225 Difference]: With dead ends: 10374 [2023-12-15 17:37:48,882 INFO L226 Difference]: Without dead ends: 8012 [2023-12-15 17:37:48,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:37:48,888 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 5110 mSDsluCounter, 17046 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 21374 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:48,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5126 Valid, 21374 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:37:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-15 17:37:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 6595. [2023-12-15 17:37:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6595 states, 6164 states have (on average 1.6802401038286827) internal successors, (10357), 6182 states have internal predecessors, (10357), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-15 17:37:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6595 states to 6595 states and 11076 transitions. [2023-12-15 17:37:49,055 INFO L78 Accepts]: Start accepts. Automaton has 6595 states and 11076 transitions. Word has length 131 [2023-12-15 17:37:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:49,055 INFO L495 AbstractCegarLoop]: Abstraction has 6595 states and 11076 transitions. [2023-12-15 17:37:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6595 states and 11076 transitions. [2023-12-15 17:37:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:49,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:49,058 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] [2023-12-15 17:37:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:37:49,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1734179979, now seen corresponding path program 1 times [2023-12-15 17:37:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:49,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400924344] [2023-12-15 17:37:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:49,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:49,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400924344] [2023-12-15 17:37:49,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400924344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:49,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:49,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835433347] [2023-12-15 17:37:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:49,201 INFO L87 Difference]: Start difference. First operand 6595 states and 11076 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:52,165 INFO L93 Difference]: Finished difference Result 19523 states and 32052 transitions. [2023-12-15 17:37:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:37:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:52,200 INFO L225 Difference]: With dead ends: 19523 [2023-12-15 17:37:52,200 INFO L226 Difference]: Without dead ends: 15064 [2023-12-15 17:37:52,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:37:52,212 INFO L413 NwaCegarLoop]: 4325 mSDtfsCounter, 5178 mSDsluCounter, 17038 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 21363 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:52,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5193 Valid, 21363 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 17:37:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15064 states. [2023-12-15 17:37:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15064 to 10709. [2023-12-15 17:37:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10709 states, 9894 states have (on average 1.6423084697796644) internal successors, (16249), 9928 states have internal predecessors, (16249), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2023-12-15 17:37:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 17690 transitions. [2023-12-15 17:37:52,520 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 17690 transitions. Word has length 131 [2023-12-15 17:37:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:52,521 INFO L495 AbstractCegarLoop]: Abstraction has 10709 states and 17690 transitions. [2023-12-15 17:37:52,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 17690 transitions. [2023-12-15 17:37:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:52,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:52,526 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] [2023-12-15 17:37:52,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:37:52,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:52,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash -132528695, now seen corresponding path program 1 times [2023-12-15 17:37:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060316553] [2023-12-15 17:37:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:52,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:52,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060316553] [2023-12-15 17:37:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060316553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403427498] [2023-12-15 17:37:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:52,680 INFO L87 Difference]: Start difference. First operand 10709 states and 17690 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:55,555 INFO L93 Difference]: Finished difference Result 35491 states and 58044 transitions. [2023-12-15 17:37:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:37:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:55,638 INFO L225 Difference]: With dead ends: 35491 [2023-12-15 17:37:55,638 INFO L226 Difference]: Without dead ends: 26918 [2023-12-15 17:37:55,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:37:55,671 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 5363 mSDsluCounter, 17041 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5389 SdHoareTripleChecker+Valid, 21367 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:55,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5389 Valid, 21367 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:37:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26918 states. [2023-12-15 17:37:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26918 to 19014. [2023-12-15 17:37:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19014 states, 17447 states have (on average 1.6155786095030664) internal successors, (28187), 17513 states have internal predecessors, (28187), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2023-12-15 17:37:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19014 states to 19014 states and 31202 transitions. [2023-12-15 17:37:56,419 INFO L78 Accepts]: Start accepts. Automaton has 19014 states and 31202 transitions. Word has length 131 [2023-12-15 17:37:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:56,419 INFO L495 AbstractCegarLoop]: Abstraction has 19014 states and 31202 transitions. [2023-12-15 17:37:56,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 19014 states and 31202 transitions. [2023-12-15 17:37:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:37:56,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:56,430 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] [2023-12-15 17:37:56,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:37:56,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:56,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1439671093, now seen corresponding path program 1 times [2023-12-15 17:37:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:56,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125691764] [2023-12-15 17:37:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:37:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125691764] [2023-12-15 17:37:56,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125691764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:56,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:56,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895315619] [2023-12-15 17:37:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:56,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:56,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:56,573 INFO L87 Difference]: Start difference. First operand 19014 states and 31202 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:59,706 INFO L93 Difference]: Finished difference Result 67154 states and 110194 transitions. [2023-12-15 17:37:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:37:59,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:37:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:59,884 INFO L225 Difference]: With dead ends: 67154 [2023-12-15 17:37:59,884 INFO L226 Difference]: Without dead ends: 50276 [2023-12-15 17:37:59,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:37:59,938 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 5327 mSDsluCounter, 17041 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5353 SdHoareTripleChecker+Valid, 21367 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:59,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5353 Valid, 21367 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 17:37:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50276 states. [2023-12-15 17:38:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50276 to 35623. [2023-12-15 17:38:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35623 states, 32584 states have (on average 1.599711514853916) internal successors, (52125), 32714 states have internal predecessors, (52125), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2023-12-15 17:38:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35623 states to 35623 states and 58710 transitions. [2023-12-15 17:38:01,513 INFO L78 Accepts]: Start accepts. Automaton has 35623 states and 58710 transitions. Word has length 131 [2023-12-15 17:38:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:01,514 INFO L495 AbstractCegarLoop]: Abstraction has 35623 states and 58710 transitions. [2023-12-15 17:38:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35623 states and 58710 transitions. [2023-12-15 17:38:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:38:01,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:01,530 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] [2023-12-15 17:38:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:38:01,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:01,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 457825673, now seen corresponding path program 1 times [2023-12-15 17:38:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379018923] [2023-12-15 17:38:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:38:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379018923] [2023-12-15 17:38:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379018923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:01,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:01,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:01,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492851098] [2023-12-15 17:38:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:01,675 INFO L87 Difference]: Start difference. First operand 35623 states and 58710 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:38:05,897 INFO L93 Difference]: Finished difference Result 129521 states and 214776 transitions. [2023-12-15 17:38:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2023-12-15 17:38:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:38:06,140 INFO L225 Difference]: With dead ends: 129521 [2023-12-15 17:38:06,141 INFO L226 Difference]: Without dead ends: 96034 [2023-12-15 17:38:06,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:38:06,206 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 5211 mSDsluCounter, 16645 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:06,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5226 Valid, 20827 Invalid, 2734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 17:38:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96034 states. [2023-12-15 17:38:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96034 to 68840. [2023-12-15 17:38:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68840 states, 62921 states have (on average 1.5913129161965003) internal successors, (100127), 63179 states have internal predecessors, (100127), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2023-12-15 17:38:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68840 states to 68840 states and 115182 transitions. [2023-12-15 17:38:08,970 INFO L78 Accepts]: Start accepts. Automaton has 68840 states and 115182 transitions. Word has length 131 [2023-12-15 17:38:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:08,970 INFO L495 AbstractCegarLoop]: Abstraction has 68840 states and 115182 transitions. [2023-12-15 17:38:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 68840 states and 115182 transitions. [2023-12-15 17:38:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 17:38:09,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:09,007 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] [2023-12-15 17:38:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:38:09,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:09,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1488866571, now seen corresponding path program 1 times [2023-12-15 17:38:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038379922] [2023-12-15 17:38:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:38:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038379922] [2023-12-15 17:38:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038379922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:09,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327111672] [2023-12-15 17:38:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:09,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:09,165 INFO L87 Difference]: Start difference. First operand 68840 states and 115182 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 17:38:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:13,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:38:13,484 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:38:13,485 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1581 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:13,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3333 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:38:13,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:38:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:38:13,489 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (68840states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (209067 states constructed, input type IntersectNwa). [2023-12-15 17:38:13,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:38:13,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:13,510 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:38:13,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:38:13 BoogieIcfgContainer [2023-12-15 17:38:13,511 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:38:13,511 INFO L158 Benchmark]: Toolchain (without parser) took 53802.14ms. Allocated memory was 200.3MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 112.3MB in the beginning and 581.2MB in the end (delta: -468.9MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 17:38:13,511 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 200.3MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:38:13,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2208.66ms. Allocated memory was 200.3MB in the beginning and 281.0MB in the end (delta: 80.7MB). Free memory was 112.3MB in the beginning and 97.3MB in the end (delta: 15.0MB). Peak memory consumption was 109.1MB. Max. memory is 8.0GB. [2023-12-15 17:38:13,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 355.98ms. Allocated memory is still 281.0MB. Free memory was 97.3MB in the beginning and 124.6MB in the end (delta: -27.3MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-12-15 17:38:13,512 INFO L158 Benchmark]: Boogie Preprocessor took 532.31ms. Allocated memory was 281.0MB in the beginning and 442.5MB in the end (delta: 161.5MB). Free memory was 124.6MB in the beginning and 272.9MB in the end (delta: -148.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-15 17:38:13,512 INFO L158 Benchmark]: RCFGBuilder took 5458.41ms. Allocated memory was 442.5MB in the beginning and 742.4MB in the end (delta: 299.9MB). Free memory was 272.9MB in the beginning and 339.5MB in the end (delta: -66.6MB). Peak memory consumption was 415.2MB. Max. memory is 8.0GB. [2023-12-15 17:38:13,512 INFO L158 Benchmark]: TraceAbstraction took 45240.46ms. Allocated memory was 742.4MB in the beginning and 2.4GB in the end (delta: 1.7GB). Free memory was 339.0MB in the beginning and 581.2MB in the end (delta: -242.2MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 17:38:13,513 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 200.3MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2208.66ms. Allocated memory was 200.3MB in the beginning and 281.0MB in the end (delta: 80.7MB). Free memory was 112.3MB in the beginning and 97.3MB in the end (delta: 15.0MB). Peak memory consumption was 109.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 355.98ms. Allocated memory is still 281.0MB. Free memory was 97.3MB in the beginning and 124.6MB in the end (delta: -27.3MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 532.31ms. Allocated memory was 281.0MB in the beginning and 442.5MB in the end (delta: 161.5MB). Free memory was 124.6MB in the beginning and 272.9MB in the end (delta: -148.4MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * RCFGBuilder took 5458.41ms. Allocated memory was 442.5MB in the beginning and 742.4MB in the end (delta: 299.9MB). Free memory was 272.9MB in the beginning and 339.5MB in the end (delta: -66.6MB). Peak memory consumption was 415.2MB. Max. memory is 8.0GB. * TraceAbstraction took 45240.46ms. Allocated memory was 742.4MB in the beginning and 2.4GB in the end (delta: 1.7GB). Free memory was 339.0MB in the beginning and 581.2MB in the end (delta: -242.2MB). 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: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (68840states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (209067 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 11088]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11088). Cancelled while NwaCegarLoop was constructing difference of abstraction (68840states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (209067 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2402 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 45.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68894 SdHoareTripleChecker+Valid, 21.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68639 mSDsluCounter, 276354 SdHoareTripleChecker+Invalid, 18.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216335 mSDsCounter, 1022 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32155 IncrementalHoareTripleChecker+Invalid, 33177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1022 mSolverCounterUnsat, 60019 mSDtfsCounter, 32155 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68840occurred in iteration=14, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 59013 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1965 NumberOfCodeBlocks, 1965 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1950 ConstructedInterpolants, 0 QuantifiedInterpolants, 5825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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