/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_label42+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:11:55,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:11:55,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:11:55,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:11:55,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:11:55,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:11:55,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:11:55,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:11:55,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:11:55,635 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:11:55,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:11:55,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:11:55,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:11:55,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:11:55,637 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:11:55,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:11:55,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:11:55,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:11:55,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:11:55,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:11:55,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:11:55,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:11:55,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:11:55,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:11:55,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:11:55,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:11:55,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:11:55,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:11:55,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:11:55,642 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:11:55,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:11:55,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:11:55,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:11:55,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:11:55,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:11:55,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:11:55,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:11:55,861 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:11:55,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.10.cil-1.c [2023-12-18 22:11:56,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:11:57,389 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:11:57,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.10.cil-1.c [2023-12-18 22:11:57,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27bc3bfa/0f7252ada4f945efa092c484c9c9e168/FLAG3efe99f81 [2023-12-18 22:11:57,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27bc3bfa/0f7252ada4f945efa092c484c9c9e168 [2023-12-18 22:11:57,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:11:57,453 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:11:57,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:11:57,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:11:57,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:11:57,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:11:57" (1/1) ... [2023-12-18 22:11:57,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3466c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:57, skipping insertion in model container [2023-12-18 22:11:57,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:11:57" (1/1) ... [2023-12-18 22:11:57,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:11:58,915 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_label42+token_ring.10.cil-1.c[378560,378573] [2023-12-18 22:11:58,941 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_label42+token_ring.10.cil-1.c[383339,383352] [2023-12-18 22:11:59,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:11:59,139 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:11:59,762 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_label42+token_ring.10.cil-1.c[378560,378573] [2023-12-18 22:11:59,769 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_label42+token_ring.10.cil-1.c[383339,383352] [2023-12-18 22:11:59,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:11:59,848 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:11:59,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59 WrapperNode [2023-12-18 22:11:59,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:11:59,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:11:59,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:11:59,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:11:59,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:11:59,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,240 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13119 [2023-12-18 22:12:00,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:12:00,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:12:00,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:12:00,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:12:00,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,459 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]. [2023-12-18 22:12:00,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:12:00,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:12:00,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:12:00,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:12:00,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (1/1) ... [2023-12-18 22:12:00,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:12:00,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:12:00,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 22:12:00,868 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 [2023-12-18 22:12:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:12:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:12:00,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:12:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:12:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:12:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:12:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:12:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:12:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:12:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:12:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:12:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:12:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:12:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:12:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:12:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:12:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:12:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:12:01,007 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:12:01,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:12:06,497 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:12:06,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:12:06,562 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-18 22:12:06,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:12:06 BoogieIcfgContainer [2023-12-18 22:12:06,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:12:06,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:12:06,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:12:06,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:12:06,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:11:57" (1/3) ... [2023-12-18 22:12:06,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c2dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:12:06, skipping insertion in model container [2023-12-18 22:12:06,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:11:59" (2/3) ... [2023-12-18 22:12:06,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c2dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:12:06, skipping insertion in model container [2023-12-18 22:12:06,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:12:06" (3/3) ... [2023-12-18 22:12:06,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.10.cil-1.c [2023-12-18 22:12:06,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:12:06,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:12:06,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:12:06,637 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;@39979acc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:12:06,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:12:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-18 22:12:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:06,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:06,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:06,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -410914149, now seen corresponding path program 1 times [2023-12-18 22:12:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155829778] [2023-12-18 22:12:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:06,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155829778] [2023-12-18 22:12:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155829778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:12:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845676008] [2023-12-18 22:12:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:12:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:12:07,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:12:07,139 INFO L87 Difference]: Start difference. First operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-12-18 22:12:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:08,599 INFO L93 Difference]: Finished difference Result 4967 states and 9286 transitions. [2023-12-18 22:12:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:12:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:08,617 INFO L225 Difference]: With dead ends: 4967 [2023-12-18 22:12:08,617 INFO L226 Difference]: Without dead ends: 2538 [2023-12-18 22:12:08,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:12:08,625 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 851 mSDsluCounter, 12178 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 16408 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:08,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 16408 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:12:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-18 22:12:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2428. [2023-12-18 22:12:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2394 states have (on average 1.840016708437761) internal successors, (4405), 2397 states have internal predecessors, (4405), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-18 22:12:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4455 transitions. [2023-12-18 22:12:08,716 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4455 transitions. Word has length 142 [2023-12-18 22:12:08,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:08,716 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 4455 transitions. [2023-12-18 22:12:08,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-12-18 22:12:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4455 transitions. [2023-12-18 22:12:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:08,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:08,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:08,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:12:08,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:08,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 133958425, now seen corresponding path program 1 times [2023-12-18 22:12:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001643213] [2023-12-18 22:12:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001643213] [2023-12-18 22:12:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001643213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:08,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527036993] [2023-12-18 22:12:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:08,955 INFO L87 Difference]: Start difference. First operand 2428 states and 4455 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:12,051 INFO L93 Difference]: Finished difference Result 3266 states and 5862 transitions. [2023-12-18 22:12:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:12:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:12,065 INFO L225 Difference]: With dead ends: 3266 [2023-12-18 22:12:12,066 INFO L226 Difference]: Without dead ends: 2975 [2023-12-18 22:12:12,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:12:12,070 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 5177 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5194 SdHoareTripleChecker+Valid, 21619 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:12,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5194 Valid, 21619 Invalid, 3373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:12:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-12-18 22:12:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2736. [2023-12-18 22:12:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2673 states have (on average 1.8204264870931537) internal successors, (4866), 2678 states have internal predecessors, (4866), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2023-12-18 22:12:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4965 transitions. [2023-12-18 22:12:12,155 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4965 transitions. Word has length 142 [2023-12-18 22:12:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:12,155 INFO L495 AbstractCegarLoop]: Abstraction has 2736 states and 4965 transitions. [2023-12-18 22:12:12,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4965 transitions. [2023-12-18 22:12:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:12,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:12,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:12:12,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:12,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1916450473, now seen corresponding path program 1 times [2023-12-18 22:12:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:12,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109213633] [2023-12-18 22:12:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109213633] [2023-12-18 22:12:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109213633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436138860] [2023-12-18 22:12:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:12,356 INFO L87 Difference]: Start difference. First operand 2736 states and 4965 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:15,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:15,085 INFO L93 Difference]: Finished difference Result 4324 states and 7612 transitions. [2023-12-18 22:12:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:12:15,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:15,098 INFO L225 Difference]: With dead ends: 4324 [2023-12-18 22:12:15,098 INFO L226 Difference]: Without dead ends: 3727 [2023-12-18 22:12:15,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:12:15,101 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 5218 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5235 SdHoareTripleChecker+Valid, 21504 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:15,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5235 Valid, 21504 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:12:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2023-12-18 22:12:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3300. [2023-12-18 22:12:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7886970172684458) internal successors, (5697), 3192 states have internal predecessors, (5697), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-12-18 22:12:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5882 transitions. [2023-12-18 22:12:15,182 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5882 transitions. Word has length 142 [2023-12-18 22:12:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5882 transitions. [2023-12-18 22:12:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5882 transitions. [2023-12-18 22:12:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:15,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:15,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:15,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:12:15,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:15,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1428403367, now seen corresponding path program 1 times [2023-12-18 22:12:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541683112] [2023-12-18 22:12:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:15,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541683112] [2023-12-18 22:12:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541683112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002710087] [2023-12-18 22:12:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:15,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:15,413 INFO L87 Difference]: Start difference. First operand 3300 states and 5882 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:16,856 INFO L93 Difference]: Finished difference Result 4901 states and 8568 transitions. [2023-12-18 22:12:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:12:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:16,868 INFO L225 Difference]: With dead ends: 4901 [2023-12-18 22:12:16,868 INFO L226 Difference]: Without dead ends: 3738 [2023-12-18 22:12:16,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:12:16,872 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4885 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:16,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 20718 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:12:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2023-12-18 22:12:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3300. [2023-12-18 22:12:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.78712715855573) internal successors, (5692), 3192 states have internal predecessors, (5692), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-12-18 22:12:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5877 transitions. [2023-12-18 22:12:16,940 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5877 transitions. Word has length 142 [2023-12-18 22:12:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5877 transitions. [2023-12-18 22:12:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5877 transitions. [2023-12-18 22:12:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:16,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:16,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:12:16,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1773928727, now seen corresponding path program 1 times [2023-12-18 22:12:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:16,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691185434] [2023-12-18 22:12:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691185434] [2023-12-18 22:12:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691185434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:17,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218479472] [2023-12-18 22:12:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:17,214 INFO L87 Difference]: Start difference. First operand 3300 states and 5877 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:18,579 INFO L93 Difference]: Finished difference Result 4897 states and 8547 transitions. [2023-12-18 22:12:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:12:18,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:18,591 INFO L225 Difference]: With dead ends: 4897 [2023-12-18 22:12:18,591 INFO L226 Difference]: Without dead ends: 3734 [2023-12-18 22:12:18,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:12:18,597 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4883 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:18,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 20718 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:12:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-12-18 22:12:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3300. [2023-12-18 22:12:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.785557299843014) internal successors, (5687), 3192 states have internal predecessors, (5687), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-12-18 22:12:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5872 transitions. [2023-12-18 22:12:18,671 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5872 transitions. Word has length 142 [2023-12-18 22:12:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:18,672 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5872 transitions. [2023-12-18 22:12:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5872 transitions. [2023-12-18 22:12:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:18,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:18,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:12:18,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash 491756441, now seen corresponding path program 1 times [2023-12-18 22:12:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:18,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712596875] [2023-12-18 22:12:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712596875] [2023-12-18 22:12:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712596875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:18,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:18,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:18,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397056547] [2023-12-18 22:12:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:18,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:18,829 INFO L87 Difference]: Start difference. First operand 3300 states and 5872 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:19,868 INFO L93 Difference]: Finished difference Result 4892 states and 8524 transitions. [2023-12-18 22:12:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:12:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:19,880 INFO L225 Difference]: With dead ends: 4892 [2023-12-18 22:12:19,880 INFO L226 Difference]: Without dead ends: 3729 [2023-12-18 22:12:19,883 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 [2023-12-18 22:12:19,887 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 5011 mSDsluCounter, 12425 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:19,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16611 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 22:12:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-12-18 22:12:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3300. [2023-12-18 22:12:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7839874411302983) internal successors, (5682), 3192 states have internal predecessors, (5682), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-12-18 22:12:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5867 transitions. [2023-12-18 22:12:19,971 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5867 transitions. Word has length 142 [2023-12-18 22:12:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:19,972 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5867 transitions. [2023-12-18 22:12:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5867 transitions. [2023-12-18 22:12:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:19,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:19,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:19,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:12:19,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:19,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1350719273, now seen corresponding path program 1 times [2023-12-18 22:12:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528362468] [2023-12-18 22:12:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528362468] [2023-12-18 22:12:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528362468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307762208] [2023-12-18 22:12:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:20,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:20,167 INFO L87 Difference]: Start difference. First operand 3300 states and 5867 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:22,768 INFO L93 Difference]: Finished difference Result 6373 states and 10927 transitions. [2023-12-18 22:12:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:12:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:22,783 INFO L225 Difference]: With dead ends: 6373 [2023-12-18 22:12:22,783 INFO L226 Difference]: Without dead ends: 5212 [2023-12-18 22:12:22,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:12:22,787 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 5168 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5185 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:22,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5185 Valid, 21615 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:12:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2023-12-18 22:12:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4439. [2023-12-18 22:12:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4220 states have (on average 1.740047393364929) internal successors, (7343), 4231 states have internal predecessors, (7343), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-12-18 22:12:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 7706 transitions. [2023-12-18 22:12:22,896 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 7706 transitions. Word has length 142 [2023-12-18 22:12:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:22,896 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 7706 transitions. [2023-12-18 22:12:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 7706 transitions. [2023-12-18 22:12:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:22,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:22,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:12:22,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:22,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1222245337, now seen corresponding path program 1 times [2023-12-18 22:12:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475191673] [2023-12-18 22:12:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:23,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:23,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475191673] [2023-12-18 22:12:23,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475191673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:23,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:23,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:23,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636857320] [2023-12-18 22:12:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:23,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:23,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:23,080 INFO L87 Difference]: Start difference. First operand 4439 states and 7706 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:24,345 INFO L93 Difference]: Finished difference Result 7548 states and 12863 transitions. [2023-12-18 22:12:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:12:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:24,356 INFO L225 Difference]: With dead ends: 7548 [2023-12-18 22:12:24,356 INFO L226 Difference]: Without dead ends: 5246 [2023-12-18 22:12:24,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:12:24,362 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 5016 mSDsluCounter, 12425 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:24,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 16611 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:12:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2023-12-18 22:12:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 4439. [2023-12-18 22:12:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4220 states have (on average 1.7379146919431279) internal successors, (7334), 4231 states have internal predecessors, (7334), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-12-18 22:12:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 7697 transitions. [2023-12-18 22:12:24,460 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 7697 transitions. Word has length 142 [2023-12-18 22:12:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:24,460 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 7697 transitions. [2023-12-18 22:12:24,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 7697 transitions. [2023-12-18 22:12:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:24,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:24,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:12:24,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 889602199, now seen corresponding path program 1 times [2023-12-18 22:12:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523761735] [2023-12-18 22:12:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:24,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523761735] [2023-12-18 22:12:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523761735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:24,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826880013] [2023-12-18 22:12:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:24,636 INFO L87 Difference]: Start difference. First operand 4439 states and 7697 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:27,638 INFO L93 Difference]: Finished difference Result 10480 states and 17612 transitions. [2023-12-18 22:12:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:12:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:27,678 INFO L225 Difference]: With dead ends: 10480 [2023-12-18 22:12:27,678 INFO L226 Difference]: Without dead ends: 8180 [2023-12-18 22:12:27,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:12:27,686 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 5200 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 21616 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:27,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 21616 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 22:12:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2023-12-18 22:12:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 6739. [2023-12-18 22:12:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 6312 states have (on average 1.692173637515843) internal successors, (10681), 6331 states have internal predecessors, (10681), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2023-12-18 22:12:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 11418 transitions. [2023-12-18 22:12:27,848 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 11418 transitions. Word has length 142 [2023-12-18 22:12:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:27,848 INFO L495 AbstractCegarLoop]: Abstraction has 6739 states and 11418 transitions. [2023-12-18 22:12:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 11418 transitions. [2023-12-18 22:12:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:27,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:27,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:12:27,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:27,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1403478827, now seen corresponding path program 1 times [2023-12-18 22:12:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:27,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846928581] [2023-12-18 22:12:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846928581] [2023-12-18 22:12:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846928581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517934845] [2023-12-18 22:12:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:28,009 INFO L87 Difference]: Start difference. First operand 6739 states and 11418 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:30,653 INFO L93 Difference]: Finished difference Result 18724 states and 31133 transitions. [2023-12-18 22:12:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:12:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:30,685 INFO L225 Difference]: With dead ends: 18724 [2023-12-18 22:12:30,686 INFO L226 Difference]: Without dead ends: 14124 [2023-12-18 22:12:30,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:12:30,696 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 5226 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5243 SdHoareTripleChecker+Valid, 21504 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:30,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5243 Valid, 21504 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 22:12:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2023-12-18 22:12:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 11355. [2023-12-18 22:12:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 10512 states have (on average 1.65515601217656) internal successors, (17399), 10547 states have internal predecessors, (17399), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2023-12-18 22:12:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 18938 transitions. [2023-12-18 22:12:30,995 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 18938 transitions. Word has length 142 [2023-12-18 22:12:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:30,995 INFO L495 AbstractCegarLoop]: Abstraction has 11355 states and 18938 transitions. [2023-12-18 22:12:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 18938 transitions. [2023-12-18 22:12:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:31,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:31,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:31,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:12:31,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:31,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash 323666135, now seen corresponding path program 1 times [2023-12-18 22:12:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887770266] [2023-12-18 22:12:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:31,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887770266] [2023-12-18 22:12:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887770266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:31,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:31,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476035710] [2023-12-18 22:12:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:31,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:31,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:31,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:31,175 INFO L87 Difference]: Start difference. First operand 11355 states and 18938 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:34,496 INFO L93 Difference]: Finished difference Result 39308 states and 64993 transitions. [2023-12-18 22:12:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:12:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:34,584 INFO L225 Difference]: With dead ends: 39308 [2023-12-18 22:12:34,584 INFO L226 Difference]: Without dead ends: 30092 [2023-12-18 22:12:34,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:12:34,618 INFO L413 NwaCegarLoop]: 4378 mSDtfsCounter, 5566 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5594 SdHoareTripleChecker+Valid, 21609 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:34,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5594 Valid, 21609 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 22:12:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30092 states. [2023-12-18 22:12:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30092 to 20555. [2023-12-18 22:12:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20555 states, 18912 states have (on average 1.6312923011844331) internal successors, (30851), 18979 states have internal predecessors, (30851), 1193 states have call successors, (1193), 385 states have call predecessors, (1193), 448 states have return successors, (2048), 1254 states have call predecessors, (2048), 1191 states have call successors, (2048) [2023-12-18 22:12:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20555 states to 20555 states and 34092 transitions. [2023-12-18 22:12:35,474 INFO L78 Accepts]: Start accepts. Automaton has 20555 states and 34092 transitions. Word has length 142 [2023-12-18 22:12:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:35,474 INFO L495 AbstractCegarLoop]: Abstraction has 20555 states and 34092 transitions. [2023-12-18 22:12:35,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 20555 states and 34092 transitions. [2023-12-18 22:12:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:35,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:35,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:35,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:12:35,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:35,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash 795022485, now seen corresponding path program 1 times [2023-12-18 22:12:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39223123] [2023-12-18 22:12:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39223123] [2023-12-18 22:12:35,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39223123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:35,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:35,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539741856] [2023-12-18 22:12:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:35,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:35,673 INFO L87 Difference]: Start difference. First operand 20555 states and 34092 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:39,484 INFO L93 Difference]: Finished difference Result 75484 states and 125245 transitions. [2023-12-18 22:12:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:12:39,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:39,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:39,650 INFO L225 Difference]: With dead ends: 75484 [2023-12-18 22:12:39,650 INFO L226 Difference]: Without dead ends: 57068 [2023-12-18 22:12:39,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:12:39,710 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 5285 mSDsluCounter, 17228 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5301 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:39,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5301 Valid, 21605 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:12:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57068 states. [2023-12-18 22:12:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57068 to 38315. [2023-12-18 22:12:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38315 states, 35104 states have (on average 1.614260483135825) internal successors, (56667), 35235 states have internal predecessors, (56667), 2313 states have call successors, (2313), 769 states have call predecessors, (2313), 896 states have return successors, (4754), 2438 states have call predecessors, (4754), 2311 states have call successors, (4754) [2023-12-18 22:12:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38315 states to 38315 states and 63734 transitions. [2023-12-18 22:12:41,114 INFO L78 Accepts]: Start accepts. Automaton has 38315 states and 63734 transitions. Word has length 142 [2023-12-18 22:12:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:41,115 INFO L495 AbstractCegarLoop]: Abstraction has 38315 states and 63734 transitions. [2023-12-18 22:12:41,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 38315 states and 63734 transitions. [2023-12-18 22:12:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:41,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:41,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:12:41,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:41,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash -852340457, now seen corresponding path program 1 times [2023-12-18 22:12:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272750050] [2023-12-18 22:12:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:41,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272750050] [2023-12-18 22:12:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272750050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:41,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358899092] [2023-12-18 22:12:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:41,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:41,294 INFO L87 Difference]: Start difference. First operand 38315 states and 63734 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:46,330 INFO L93 Difference]: Finished difference Result 145020 states and 242573 transitions. [2023-12-18 22:12:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:12:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:46,707 INFO L225 Difference]: With dead ends: 145020 [2023-12-18 22:12:46,707 INFO L226 Difference]: Without dead ends: 108844 [2023-12-18 22:12:46,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:12:46,785 INFO L413 NwaCegarLoop]: 4378 mSDtfsCounter, 5498 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5526 SdHoareTripleChecker+Valid, 21609 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:46,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5526 Valid, 21609 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:12:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108844 states. [2023-12-18 22:12:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108844 to 74475. [2023-12-18 22:12:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74475 states, 68192 states have (on average 1.606918700140779) internal successors, (109579), 68451 states have internal predecessors, (109579), 4489 states have call successors, (4489), 1537 states have call predecessors, (4489), 1792 states have return successors, (11560), 4742 states have call predecessors, (11560), 4487 states have call successors, (11560) [2023-12-18 22:12:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74475 states to 74475 states and 125628 transitions. [2023-12-18 22:12:49,983 INFO L78 Accepts]: Start accepts. Automaton has 74475 states and 125628 transitions. Word has length 142 [2023-12-18 22:12:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:12:49,985 INFO L495 AbstractCegarLoop]: Abstraction has 74475 states and 125628 transitions. [2023-12-18 22:12:49,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 74475 states and 125628 transitions. [2023-12-18 22:12:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:12:50,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:12:50,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:12:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:12:50,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:12:50,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:12:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1311276117, now seen corresponding path program 1 times [2023-12-18 22:12:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:12:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839808718] [2023-12-18 22:12:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:12:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:12:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:12:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:12:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:12:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:12:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:12:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:12:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:12:50,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:12:50,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839808718] [2023-12-18 22:12:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839808718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:12:50,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:12:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:12:50,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580788035] [2023-12-18 22:12:50,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:12:50,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:12:50,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:12:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:12:50,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:12:50,176 INFO L87 Difference]: Start difference. First operand 74475 states and 125628 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:12:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:12:57,369 INFO L93 Difference]: Finished difference Result 283964 states and 483061 transitions. [2023-12-18 22:12:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:12:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:12:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:12:58,267 INFO L225 Difference]: With dead ends: 283964 [2023-12-18 22:12:58,268 INFO L226 Difference]: Without dead ends: 211628 [2023-12-18 22:12:58,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:12:58,424 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 5464 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5492 SdHoareTripleChecker+Valid, 21608 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:12:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5492 Valid, 21608 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 22:12:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211628 states. [2023-12-18 22:13:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211628 to 146795. [2023-12-18 22:13:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146795 states, 134496 states have (on average 1.6034603259576492) internal successors, (215659), 135011 states have internal predecessors, (215659), 8713 states have call successors, (8713), 3073 states have call predecessors, (8713), 3584 states have return successors, (29418), 9222 states have call predecessors, (29418), 8711 states have call successors, (29418) [2023-12-18 22:13:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146795 states to 146795 states and 253790 transitions. [2023-12-18 22:13:05,025 INFO L78 Accepts]: Start accepts. Automaton has 146795 states and 253790 transitions. Word has length 142 [2023-12-18 22:13:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:13:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 146795 states and 253790 transitions. [2023-12-18 22:13:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:13:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 146795 states and 253790 transitions. [2023-12-18 22:13:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:13:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:13:05,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:13:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:13:05,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:13:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:13:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 272691543, now seen corresponding path program 1 times [2023-12-18 22:13:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:13:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148385549] [2023-12-18 22:13:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:13:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:13:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:13:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:13:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:13:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:13:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:13:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:13:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:13:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148385549] [2023-12-18 22:13:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148385549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:13:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:13:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:13:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930175320] [2023-12-18 22:13:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:13:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:13:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:13:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:13:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:13:05,253 INFO L87 Difference]: Start difference. First operand 146795 states and 253790 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:13:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:13:17,398 INFO L93 Difference]: Finished difference Result 558012 states and 974877 transitions. [2023-12-18 22:13:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:13:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 142 [2023-12-18 22:13:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:13:19,808 INFO L225 Difference]: With dead ends: 558012 [2023-12-18 22:13:19,808 INFO L226 Difference]: Without dead ends: 413356 [2023-12-18 22:13:20,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:13:20,292 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 5268 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 21611 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:13:20,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5284 Valid, 21611 Invalid, 3507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:13:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413356 states. [2023-12-18 22:13:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413356 to 291435. [2023-12-18 22:13:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291435 states, 267360 states have (on average 1.6020758527827648) internal successors, (428331), 268387 states have internal predecessors, (428331), 16905 states have call successors, (16905), 6145 states have call predecessors, (16905), 7168 states have return successors, (78000), 17926 states have call predecessors, (78000), 16903 states have call successors, (78000) [2023-12-18 22:13:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291435 states to 291435 states and 523236 transitions. [2023-12-18 22:13:34,770 INFO L78 Accepts]: Start accepts. Automaton has 291435 states and 523236 transitions. Word has length 142 [2023-12-18 22:13:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:13:34,771 INFO L495 AbstractCegarLoop]: Abstraction has 291435 states and 523236 transitions. [2023-12-18 22:13:34,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-12-18 22:13:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 291435 states and 523236 transitions. [2023-12-18 22:13:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 22:13:34,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:13:34,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:13:34,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:13:34,911 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:13:34,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:13:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1700473835, now seen corresponding path program 1 times [2023-12-18 22:13:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:13:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823224474] [2023-12-18 22:13:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:13:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:13:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:13:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-18 22:13:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-18 22:13:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-18 22:13:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-18 22:13:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:13:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:13:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:13:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823224474] [2023-12-18 22:13:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823224474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:13:35,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:13:35,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:13:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156195275] [2023-12-18 22:13:35,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:13:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:13:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:13:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:13:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:13:35,075 INFO L87 Difference]: Start difference. First operand 291435 states and 523236 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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)