/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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:37:25,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:37:25,982 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 17:37:25,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:37:25,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:37:26,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:37:26,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:37:26,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:37:26,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:37:26,018 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:37:26,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:37:26,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:37:26,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:37:26,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:37:26,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:37:26,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:37:26,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:37:26,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:37:26,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:37:26,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:37:26,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:37:26,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:37:26,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:37:26,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:37:26,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:37:26,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:37:26,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:37:26,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:37:26,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:37:26,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:37:26,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:37:26,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:37:26,226 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:37:26,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-2.c [2023-12-15 17:37:27,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:37:27,590 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:37:27,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.09.cil-2.c [2023-12-15 17:37:27,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660f8670f/81b5dbe3e63243cb95788c064da80c59/FLAG902835cdb [2023-12-15 17:37:27,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660f8670f/81b5dbe3e63243cb95788c064da80c59 [2023-12-15 17:37:27,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:37:27,665 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:37:27,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:37:27,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:37:27,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:37:27,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:37:27" (1/1) ... [2023-12-15 17:37:27,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbb8d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:27, skipping insertion in model container [2023-12-15 17:37:27,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:37:27" (1/1) ... [2023-12-15 17:37:27,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:37:28,877 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-2.c[380323,380336] [2023-12-15 17:37:28,897 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-2.c[383339,383352] [2023-12-15 17:37:29,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:37:29,088 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:37:29,632 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-2.c[380323,380336] [2023-12-15 17:37:29,639 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-2.c[383339,383352] [2023-12-15 17:37:29,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:37:29,763 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:37:29,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29 WrapperNode [2023-12-15 17:37:29,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:37:29,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:37:29,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:37:29,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:37:29,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:29,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,141 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13059 [2023-12-15 17:37:30,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:37:30,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:37:30,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:37:30,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:37:30,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,326 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 17:37:30,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:37:30,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:37:30,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:37:30,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:37:30,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (1/1) ... [2023-12-15 17:37:30,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:37:30,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:37:30,662 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 17:37:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:37:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:37:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:37:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:37:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:37:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:37:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:37:30,692 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 17:37:30,805 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:37:30,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:37:36,198 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:37:36,285 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:37:36,286 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 17:37:36,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:37:36 BoogieIcfgContainer [2023-12-15 17:37:36,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:37:36,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:37:36,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:37:36,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:37:36,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:37:27" (1/3) ... [2023-12-15 17:37:36,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ed5b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:37:36, skipping insertion in model container [2023-12-15 17:37:36,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:37:29" (2/3) ... [2023-12-15 17:37:36,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ed5b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:37:36, skipping insertion in model container [2023-12-15 17:37:36,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:37:36" (3/3) ... [2023-12-15 17:37:36,292 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2023-12-15 17:37:36,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:37:36,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:37:36,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:37:36,371 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;@52559e8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:37:36,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:37:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-15 17:37:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:36,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:36,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:36,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:36,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash -550804208, now seen corresponding path program 1 times [2023-12-15 17:37:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593258322] [2023-12-15 17:37:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:36,813 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 17:37:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593258322] [2023-12-15 17:37:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593258322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:37:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730157318] [2023-12-15 17:37:36,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:36,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:37:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:37:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:37:36,846 INFO L87 Difference]: Start difference. First operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:38,169 INFO L93 Difference]: Finished difference Result 4913 states and 9190 transitions. [2023-12-15 17:37:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:37:38,172 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:38,193 INFO L225 Difference]: With dead ends: 4913 [2023-12-15 17:37:38,193 INFO L226 Difference]: Without dead ends: 2505 [2023-12-15 17:37:38,201 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 17:37:38,205 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 778 mSDsluCounter, 12156 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 16367 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:38,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 16367 Invalid, 891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:37:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-12-15 17:37:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2405. [2023-12-15 17:37:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2372 states have (on average 1.8414839797639122) internal successors, (4368), 2375 states have internal predecessors, (4368), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-15 17:37:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4416 transitions. [2023-12-15 17:37:38,323 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4416 transitions. Word has length 132 [2023-12-15 17:37:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:38,323 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 4416 transitions. [2023-12-15 17:37:38,324 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:38,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4416 transitions. [2023-12-15 17:37:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:38,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:38,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:38,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:37:38,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:38,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1412637810, now seen corresponding path program 1 times [2023-12-15 17:37:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974686677] [2023-12-15 17:37:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:38,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:38,436 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 17 [2023-12-15 17:37:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:38,542 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 17:37:38,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974686677] [2023-12-15 17:37:38,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974686677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:38,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:38,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:37:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820450833] [2023-12-15 17:37:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:38,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:37:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:37:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:37:38,545 INFO L87 Difference]: Start difference. First operand 2405 states and 4416 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:40,641 INFO L93 Difference]: Finished difference Result 3156 states and 5664 transitions. [2023-12-15 17:37:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:37:40,643 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:40,653 INFO L225 Difference]: With dead ends: 3156 [2023-12-15 17:37:40,653 INFO L226 Difference]: Without dead ends: 2887 [2023-12-15 17:37:40,655 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 17:37:40,656 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 5123 mSDsluCounter, 12615 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5139 SdHoareTripleChecker+Valid, 16836 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:40,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5139 Valid, 16836 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 17:37:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-12-15 17:37:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2686. [2023-12-15 17:37:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8222983257229832) internal successors, (4789), 2632 states have internal predecessors, (4789), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-15 17:37:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4876 transitions. [2023-12-15 17:37:40,722 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4876 transitions. Word has length 132 [2023-12-15 17:37:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:40,722 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4876 transitions. [2023-12-15 17:37:40,723 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4876 transitions. [2023-12-15 17:37:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:40,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:40,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:40,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:37:40,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:40,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash -440110838, now seen corresponding path program 1 times [2023-12-15 17:37:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606265050] [2023-12-15 17:37:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:41,010 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 17:37:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606265050] [2023-12-15 17:37:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606265050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:41,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:41,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325005801] [2023-12-15 17:37:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:41,013 INFO L87 Difference]: Start difference. First operand 2686 states and 4876 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:43,541 INFO L93 Difference]: Finished difference Result 3831 states and 6778 transitions. [2023-12-15 17:37:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:43,542 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:43,555 INFO L225 Difference]: With dead ends: 3831 [2023-12-15 17:37:43,555 INFO L226 Difference]: Without dead ends: 3281 [2023-12-15 17:37:43,558 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 17:37:43,559 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 5154 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:43,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 21481 Invalid, 2984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 17:37:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2023-12-15 17:37:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 2946. [2023-12-15 17:37:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8050995459308419) internal successors, (5168), 2868 states have internal predecessors, (5168), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5293 transitions. [2023-12-15 17:37:43,646 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5293 transitions. Word has length 132 [2023-12-15 17:37:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:43,646 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5293 transitions. [2023-12-15 17:37:43,646 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5293 transitions. [2023-12-15 17:37:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:43,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:43,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:43,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:37:43,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:43,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1287034124, now seen corresponding path program 1 times [2023-12-15 17:37:43,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:43,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286274546] [2023-12-15 17:37:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:43,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:43,824 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 17:37:43,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:43,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286274546] [2023-12-15 17:37:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286274546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:43,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:43,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:43,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140569119] [2023-12-15 17:37:43,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:43,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:43,829 INFO L87 Difference]: Start difference. First operand 2946 states and 5293 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:45,139 INFO L93 Difference]: Finished difference Result 4101 states and 7223 transitions. [2023-12-15 17:37:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:45,140 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:45,152 INFO L225 Difference]: With dead ends: 4101 [2023-12-15 17:37:45,152 INFO L226 Difference]: Without dead ends: 3291 [2023-12-15 17:37:45,156 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 17:37:45,162 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4818 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4835 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:45,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4835 Valid, 20647 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:37:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2023-12-15 17:37:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2946. [2023-12-15 17:37:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8040516940272442) internal successors, (5165), 2868 states have internal predecessors, (5165), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5290 transitions. [2023-12-15 17:37:45,255 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5290 transitions. Word has length 132 [2023-12-15 17:37:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:45,255 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5290 transitions. [2023-12-15 17:37:45,255 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5290 transitions. [2023-12-15 17:37:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:45,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:45,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:37:45,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:45,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash -360328818, now seen corresponding path program 1 times [2023-12-15 17:37:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060321459] [2023-12-15 17:37:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:45,386 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 17:37:45,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060321459] [2023-12-15 17:37:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060321459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:45,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:45,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:45,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407514704] [2023-12-15 17:37:45,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:45,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:45,389 INFO L87 Difference]: Start difference. First operand 2946 states and 5290 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:46,461 INFO L93 Difference]: Finished difference Result 4097 states and 7206 transitions. [2023-12-15 17:37:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:46,461 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:46,471 INFO L225 Difference]: With dead ends: 4097 [2023-12-15 17:37:46,471 INFO L226 Difference]: Without dead ends: 3287 [2023-12-15 17:37:46,474 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 17:37:46,474 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4936 mSDsluCounter, 12382 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 16551 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:46,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4953 Valid, 16551 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:37:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2023-12-15 17:37:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2946. [2023-12-15 17:37:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8030038421236465) internal successors, (5162), 2868 states have internal predecessors, (5162), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5287 transitions. [2023-12-15 17:37:46,534 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5287 transitions. Word has length 132 [2023-12-15 17:37:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:46,534 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5287 transitions. [2023-12-15 17:37:46,534 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5287 transitions. [2023-12-15 17:37:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:46,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:46,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:37:46,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:46,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1803287756, now seen corresponding path program 1 times [2023-12-15 17:37:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815051547] [2023-12-15 17:37:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:46,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:46,733 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 17:37:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815051547] [2023-12-15 17:37:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815051547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:46,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:46,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480237771] [2023-12-15 17:37:46,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:46,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:46,735 INFO L87 Difference]: Start difference. First operand 2946 states and 5287 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:48,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:48,028 INFO L93 Difference]: Finished difference Result 4093 states and 7189 transitions. [2023-12-15 17:37:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:48,031 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:48,042 INFO L225 Difference]: With dead ends: 4093 [2023-12-15 17:37:48,042 INFO L226 Difference]: Without dead ends: 3283 [2023-12-15 17:37:48,044 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 17:37:48,045 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4814 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:48,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4831 Valid, 20647 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:37:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2023-12-15 17:37:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2946. [2023-12-15 17:37:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8019559902200488) internal successors, (5159), 2868 states have internal predecessors, (5159), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-15 17:37:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5284 transitions. [2023-12-15 17:37:48,120 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5284 transitions. Word has length 132 [2023-12-15 17:37:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:48,120 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5284 transitions. [2023-12-15 17:37:48,121 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5284 transitions. [2023-12-15 17:37:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:48,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:48,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:37:48,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:48,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 764703182, now seen corresponding path program 1 times [2023-12-15 17:37:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:48,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857592159] [2023-12-15 17:37:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:48,299 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 17:37:48,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857592159] [2023-12-15 17:37:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857592159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:48,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:48,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:48,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831183038] [2023-12-15 17:37:48,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:48,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:48,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:48,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:48,301 INFO L87 Difference]: Start difference. First operand 2946 states and 5284 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:50,368 INFO L93 Difference]: Finished difference Result 4807 states and 8335 transitions. [2023-12-15 17:37:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:50,369 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:50,384 INFO L225 Difference]: With dead ends: 4807 [2023-12-15 17:37:50,384 INFO L226 Difference]: Without dead ends: 3997 [2023-12-15 17:37:50,388 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 17:37:50,389 INFO L413 NwaCegarLoop]: 4191 mSDtfsCounter, 5207 mSDsluCounter, 16694 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:50,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 20885 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 17:37:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-12-15 17:37:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3479. [2023-12-15 17:37:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3346 states have (on average 1.7722653915122535) internal successors, (5930), 3353 states have internal predecessors, (5930), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-15 17:37:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 6135 transitions. [2023-12-15 17:37:50,467 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 6135 transitions. Word has length 132 [2023-12-15 17:37:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:50,468 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 6135 transitions. [2023-12-15 17:37:50,468 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 6135 transitions. [2023-12-15 17:37:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:50,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:50,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:37:50,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1208462196, now seen corresponding path program 1 times [2023-12-15 17:37:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530005266] [2023-12-15 17:37:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:50,621 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 17:37:50,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:50,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530005266] [2023-12-15 17:37:50,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530005266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:50,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:50,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332779327] [2023-12-15 17:37:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:50,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:50,623 INFO L87 Difference]: Start difference. First operand 3479 states and 6135 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:51,784 INFO L93 Difference]: Finished difference Result 5325 states and 9172 transitions. [2023-12-15 17:37:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:37:51,785 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:51,797 INFO L225 Difference]: With dead ends: 5325 [2023-12-15 17:37:51,797 INFO L226 Difference]: Without dead ends: 3982 [2023-12-15 17:37:51,800 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 17:37:51,801 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4813 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:51,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 20647 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:37:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2023-12-15 17:37:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3479. [2023-12-15 17:37:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3346 states have (on average 1.7707710699342498) internal successors, (5925), 3353 states have internal predecessors, (5925), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-15 17:37:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 6130 transitions. [2023-12-15 17:37:51,871 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 6130 transitions. Word has length 132 [2023-12-15 17:37:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:51,871 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 6130 transitions. [2023-12-15 17:37:51,871 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 6130 transitions. [2023-12-15 17:37:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:51,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:51,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:37:51,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:51,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 944644622, now seen corresponding path program 1 times [2023-12-15 17:37:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009781164] [2023-12-15 17:37:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:52,026 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 17:37:52,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009781164] [2023-12-15 17:37:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009781164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:52,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847263074] [2023-12-15 17:37:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:52,028 INFO L87 Difference]: Start difference. First operand 3479 states and 6130 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:54,430 INFO L93 Difference]: Finished difference Result 6706 states and 11378 transitions. [2023-12-15 17:37:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:54,431 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:54,446 INFO L225 Difference]: With dead ends: 6706 [2023-12-15 17:37:54,446 INFO L226 Difference]: Without dead ends: 5363 [2023-12-15 17:37:54,451 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 17:37:54,452 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 5119 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5135 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:54,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5135 Valid, 21479 Invalid, 2852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:37:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2023-12-15 17:37:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 4545. [2023-12-15 17:37:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 4312 states have (on average 1.7293599257884973) internal successors, (7457), 4323 states have internal predecessors, (7457), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-15 17:37:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 7828 transitions. [2023-12-15 17:37:54,625 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 7828 transitions. Word has length 132 [2023-12-15 17:37:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:54,625 INFO L495 AbstractCegarLoop]: Abstraction has 4545 states and 7828 transitions. [2023-12-15 17:37:54,625 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 7828 transitions. [2023-12-15 17:37:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:54,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:54,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:37:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:37:54,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:54,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash 321363020, now seen corresponding path program 1 times [2023-12-15 17:37:54,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:54,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105532970] [2023-12-15 17:37:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:54,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:54,773 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 17:37:54,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:54,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105532970] [2023-12-15 17:37:54,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105532970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:54,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:54,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:54,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855209737] [2023-12-15 17:37:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:54,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:54,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:54,775 INFO L87 Difference]: Start difference. First operand 4545 states and 7828 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:37:57,133 INFO L93 Difference]: Finished difference Result 10510 states and 17518 transitions. [2023-12-15 17:37:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:37:57,133 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:37:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:37:57,158 INFO L225 Difference]: With dead ends: 10510 [2023-12-15 17:37:57,158 INFO L226 Difference]: Without dead ends: 8101 [2023-12-15 17:37:57,166 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 17:37:57,166 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 5124 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:37:57,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 21479 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 17:37:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2023-12-15 17:37:57,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6682. [2023-12-15 17:37:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6249 states have (on average 1.6845895343254922) internal successors, (10527), 6268 states have internal predecessors, (10527), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-15 17:37:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 11248 transitions. [2023-12-15 17:37:57,426 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 11248 transitions. Word has length 132 [2023-12-15 17:37:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:37:57,426 INFO L495 AbstractCegarLoop]: Abstraction has 6682 states and 11248 transitions. [2023-12-15 17:37:57,426 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:37:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 11248 transitions. [2023-12-15 17:37:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:37:57,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:37:57,430 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, 1] [2023-12-15 17:37:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:37:57,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:37:57,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:37:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 439804494, now seen corresponding path program 1 times [2023-12-15 17:37:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:37:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936334139] [2023-12-15 17:37:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:37:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:37:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:37:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:37:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:37:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:37:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:37:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:37:57,587 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 17:37:57,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:37:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936334139] [2023-12-15 17:37:57,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936334139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:37:57,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:37:57,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:37:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873538606] [2023-12-15 17:37:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:37:57,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:37:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:37:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:37:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:37:57,589 INFO L87 Difference]: Start difference. First operand 6682 states and 11248 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:38:00,556 INFO L93 Difference]: Finished difference Result 19779 states and 32558 transitions. [2023-12-15 17:38:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:00,557 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:38:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:38:00,596 INFO L225 Difference]: With dead ends: 19779 [2023-12-15 17:38:00,596 INFO L226 Difference]: Without dead ends: 15233 [2023-12-15 17:38:00,610 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 17:38:00,611 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 5192 mSDsluCounter, 17121 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 21468 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:00,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 21468 Invalid, 3307 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3244 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 17:38:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15233 states. [2023-12-15 17:38:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15233 to 10796. [2023-12-15 17:38:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10796 states, 9979 states have (on average 1.645355246016635) internal successors, (16419), 10014 states have internal predecessors, (16419), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2023-12-15 17:38:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10796 states to 10796 states and 17862 transitions. [2023-12-15 17:38:01,087 INFO L78 Accepts]: Start accepts. Automaton has 10796 states and 17862 transitions. Word has length 132 [2023-12-15 17:38:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:01,088 INFO L495 AbstractCegarLoop]: Abstraction has 10796 states and 17862 transitions. [2023-12-15 17:38:01,088 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 10796 states and 17862 transitions. [2023-12-15 17:38:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:38:01,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:01,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:01,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:38:01,093 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:01,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1593589552, now seen corresponding path program 1 times [2023-12-15 17:38:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:01,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166997394] [2023-12-15 17:38:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:01,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:38:01,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166997394] [2023-12-15 17:38:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166997394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455550624] [2023-12-15 17:38:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:01,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:01,231 INFO L87 Difference]: Start difference. First operand 10796 states and 17862 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:38:04,103 INFO L93 Difference]: Finished difference Result 35747 states and 58550 transitions. [2023-12-15 17:38:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:04,103 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:38:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:38:04,200 INFO L225 Difference]: With dead ends: 35747 [2023-12-15 17:38:04,200 INFO L226 Difference]: Without dead ends: 27087 [2023-12-15 17:38:04,232 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 17:38:04,232 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5377 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5403 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5403 Valid, 21472 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:38:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27087 states. [2023-12-15 17:38:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27087 to 19181. [2023-12-15 17:38:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19181 states, 17612 states have (on average 1.6191801044742222) internal successors, (28517), 17679 states have internal predecessors, (28517), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2023-12-15 17:38:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19181 states to 19181 states and 31534 transitions. [2023-12-15 17:38:04,937 INFO L78 Accepts]: Start accepts. Automaton has 19181 states and 31534 transitions. Word has length 132 [2023-12-15 17:38:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 19181 states and 31534 transitions. [2023-12-15 17:38:04,937 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 19181 states and 31534 transitions. [2023-12-15 17:38:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:38:04,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:04,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:38:04,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:04,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash 834669070, now seen corresponding path program 1 times [2023-12-15 17:38:04,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:04,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356775016] [2023-12-15 17:38:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:05,089 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 17:38:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356775016] [2023-12-15 17:38:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356775016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:05,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:05,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102630017] [2023-12-15 17:38:05,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:05,090 INFO L87 Difference]: Start difference. First operand 19181 states and 31534 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:38:08,297 INFO L93 Difference]: Finished difference Result 67650 states and 111180 transitions. [2023-12-15 17:38:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:08,298 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:38:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:38:08,491 INFO L225 Difference]: With dead ends: 67650 [2023-12-15 17:38:08,491 INFO L226 Difference]: Without dead ends: 50605 [2023-12-15 17:38:08,548 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 17:38:08,549 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5341 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5367 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:08,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5367 Valid, 21472 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 17:38:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50605 states. [2023-12-15 17:38:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50605 to 35950. [2023-12-15 17:38:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35950 states, 32909 states have (on average 1.6036646510073231) internal successors, (52775), 33040 states have internal predecessors, (52775), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2023-12-15 17:38:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35950 states to 35950 states and 59362 transitions. [2023-12-15 17:38:09,976 INFO L78 Accepts]: Start accepts. Automaton has 35950 states and 59362 transitions. Word has length 132 [2023-12-15 17:38:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:09,976 INFO L495 AbstractCegarLoop]: Abstraction has 35950 states and 59362 transitions. [2023-12-15 17:38:09,976 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 35950 states and 59362 transitions. [2023-12-15 17:38:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:38:09,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:09,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:38:09,994 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:09,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -472473328, now seen corresponding path program 1 times [2023-12-15 17:38:09,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:09,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239280756] [2023-12-15 17:38:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:10,128 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 17:38:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239280756] [2023-12-15 17:38:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239280756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:10,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:10,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387567748] [2023-12-15 17:38:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:10,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:10,321 INFO L87 Difference]: Start difference. First operand 35950 states and 59362 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:14,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:38:14,315 INFO L93 Difference]: Finished difference Result 130497 states and 216722 transitions. [2023-12-15 17:38:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:38:14,316 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-15 17:38:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:38:14,567 INFO L225 Difference]: With dead ends: 130497 [2023-12-15 17:38:14,567 INFO L226 Difference]: Without dead ends: 96683 [2023-12-15 17:38:14,635 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 17:38:14,635 INFO L413 NwaCegarLoop]: 4193 mSDtfsCounter, 5227 mSDsluCounter, 16692 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:14,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5242 Valid, 20885 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 17:38:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96683 states. [2023-12-15 17:38:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96683 to 69487. [2023-12-15 17:38:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69487 states, 63566 states have (on average 1.5954598370197905) internal successors, (101417), 63825 states have internal predecessors, (101417), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2023-12-15 17:38:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69487 states to 69487 states and 116474 transitions. [2023-12-15 17:38:17,613 INFO L78 Accepts]: Start accepts. Automaton has 69487 states and 116474 transitions. Word has length 132 [2023-12-15 17:38:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:38:17,613 INFO L495 AbstractCegarLoop]: Abstraction has 69487 states and 116474 transitions. [2023-12-15 17:38:17,614 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:38:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 69487 states and 116474 transitions. [2023-12-15 17:38:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 17:38:17,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:38:17,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:38:17,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:38:17,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:38:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1425023438, now seen corresponding path program 1 times [2023-12-15 17:38:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:38:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054956398] [2023-12-15 17:38:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:38:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:38:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:38:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 17:38:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 17:38:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 17:38:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 17:38:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:38:17,796 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 17:38:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:38:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054956398] [2023-12-15 17:38:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054956398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:38:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:38:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:38:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476272680] [2023-12-15 17:38:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:38:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:38:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:38:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:38:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:38:17,797 INFO L87 Difference]: Start difference. First operand 69487 states and 116474 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 17:38:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 17:38:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-15 17:38:20,368 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1125 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:38:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 2137 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:38:20,369 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:38:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:38:20,370 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (69487states) and FLOYD_HOARE automaton (currently 12 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (50478 states constructed, input type IntersectNwa). [2023-12-15 17:38:20,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:38:20,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:38:20,378 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:38:20,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:38:20 BoogieIcfgContainer [2023-12-15 17:38:20,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:38:20,380 INFO L158 Benchmark]: Toolchain (without parser) took 52715.00ms. Allocated memory was 190.8MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 112.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 17:38:20,380 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:38:20,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2096.32ms. Allocated memory was 190.8MB in the beginning and 250.6MB in the end (delta: 59.8MB). Free memory was 112.5MB in the beginning and 153.9MB in the end (delta: -41.4MB). Peak memory consumption was 126.8MB. Max. memory is 8.0GB. [2023-12-15 17:38:20,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 377.35ms. Allocated memory is still 250.6MB. Free memory was 153.9MB in the beginning and 103.6MB in the end (delta: 50.3MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2023-12-15 17:38:20,381 INFO L158 Benchmark]: Boogie Preprocessor took 497.80ms. Allocated memory was 250.6MB in the beginning and 455.1MB in the end (delta: 204.5MB). Free memory was 103.6MB in the beginning and 288.7MB in the end (delta: -185.1MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-15 17:38:20,381 INFO L158 Benchmark]: RCFGBuilder took 5646.00ms. Allocated memory was 455.1MB in the beginning and 792.7MB in the end (delta: 337.6MB). Free memory was 288.1MB in the beginning and 457.2MB in the end (delta: -169.1MB). Peak memory consumption was 429.1MB. Max. memory is 8.0GB. [2023-12-15 17:38:20,381 INFO L158 Benchmark]: TraceAbstraction took 44091.83ms. Allocated memory was 792.7MB in the beginning and 2.8GB in the end (delta: 2.0GB). Free memory was 456.7MB in the beginning and 1.3GB in the end (delta: -817.1MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 17:38:20,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2096.32ms. Allocated memory was 190.8MB in the beginning and 250.6MB in the end (delta: 59.8MB). Free memory was 112.5MB in the beginning and 153.9MB in the end (delta: -41.4MB). Peak memory consumption was 126.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 377.35ms. Allocated memory is still 250.6MB. Free memory was 153.9MB in the beginning and 103.6MB in the end (delta: 50.3MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 497.80ms. Allocated memory was 250.6MB in the beginning and 455.1MB in the end (delta: 204.5MB). Free memory was 103.6MB in the beginning and 288.7MB in the end (delta: -185.1MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * RCFGBuilder took 5646.00ms. Allocated memory was 455.1MB in the beginning and 792.7MB in the end (delta: 337.6MB). Free memory was 288.1MB in the beginning and 457.2MB in the end (delta: -169.1MB). Peak memory consumption was 429.1MB. Max. memory is 8.0GB. * TraceAbstraction took 44091.83ms. Allocated memory was 792.7MB in the beginning and 2.8GB in the end (delta: 2.0GB). Free memory was 456.7MB in the beginning and 1.3GB in the end (delta: -817.1MB). Peak memory consumption was 1.3GB. 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 (69487states) and FLOYD_HOARE automaton (currently 12 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (50478 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 (69487states) and FLOYD_HOARE automaton (currently 12 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (50478 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2410 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 44.0s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68403 SdHoareTripleChecker+Valid, 21.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68148 mSDsluCounter, 284453 SdHoareTripleChecker+Invalid, 18.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 224423 mSDsCounter, 1023 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32036 IncrementalHoareTripleChecker+Invalid, 33059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1023 mSolverCounterUnsat, 60030 mSDtfsCounter, 32036 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69487occurred 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: 6.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 59111 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1980 NumberOfCodeBlocks, 1980 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1965 ConstructedInterpolants, 0 QuantifiedInterpolants, 5840 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