/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:44:57,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:44:57,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:44:57,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:44:57,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:44:57,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:44:57,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:44:57,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:44:57,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:44:57,699 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:44:57,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:44:57,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:44:57,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:44:57,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:44:57,702 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:44:57,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:44:57,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:44:57,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:44:57,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:44:57,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:44:57,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:44:57,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:44:57,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:44:57,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:44:57,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:44:57,704 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:44:57,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:44:57,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:44:57,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:44:57,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:44:57,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:44:57,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:44:57,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:44:57,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:44:57,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:44:57,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:44:57,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:44:57,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:44:57,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:44:57,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:44:57,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:44:57,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:44:57,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:44:57,964 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:44:57,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2023-12-20 14:44:59,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:44:59,451 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:44:59,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2023-12-20 14:44:59,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da190aab2/0bba8098df7f4c89a9f9ee5b81aea8f1/FLAG3e0a14d7f [2023-12-20 14:44:59,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da190aab2/0bba8098df7f4c89a9f9ee5b81aea8f1 [2023-12-20 14:44:59,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:44:59,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:44:59,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:44:59,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:44:59,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:44:59,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:44:59" (1/1) ... [2023-12-20 14:44:59,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb28a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:59, skipping insertion in model container [2023-12-20 14:44:59,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:44:59" (1/1) ... [2023-12-20 14:44:59,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:44:59,711 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/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[913,926] [2023-12-20 14:44:59,762 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/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[5977,5990] [2023-12-20 14:44:59,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:44:59,879 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:44:59,889 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/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[913,926] [2023-12-20 14:44:59,901 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/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[5977,5990] [2023-12-20 14:44:59,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:45:00,022 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:45:00,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00 WrapperNode [2023-12-20 14:45:00,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:45:00,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:45:00,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:45:00,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:45:00,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,087 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 963 [2023-12-20 14:45:00,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:45:00,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:45:00,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:45:00,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:45:00,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,135 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]. [2023-12-20 14:45:00,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:45:00,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:45:00,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:45:00,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:45:00,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (1/1) ... [2023-12-20 14:45:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:45:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:00,258 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) [2023-12-20 14:45:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:45:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:45:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:45:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-20 14:45:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-20 14:45:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:45:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:45:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:45:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:45:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:45:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:45:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:45:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:45:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:45:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:45:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:45:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:45:00,284 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 [2023-12-20 14:45:00,458 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:45:00,461 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:45:01,224 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:45:01,295 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:45:01,296 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-20 14:45:01,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:45:01 BoogieIcfgContainer [2023-12-20 14:45:01,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:45:01,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:45:01,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:45:01,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:45:01,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:44:59" (1/3) ... [2023-12-20 14:45:01,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3666f79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:45:01, skipping insertion in model container [2023-12-20 14:45:01,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:45:00" (2/3) ... [2023-12-20 14:45:01,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3666f79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:45:01, skipping insertion in model container [2023-12-20 14:45:01,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:45:01" (3/3) ... [2023-12-20 14:45:01,303 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2023-12-20 14:45:01,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:45:01,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:45:01,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:45:01,388 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;@1e52bf44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:45:01,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:45:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 323 states have (on average 1.7182662538699691) internal successors, (555), 328 states have internal predecessors, (555), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 14:45:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 14:45:01,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:01,407 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] [2023-12-20 14:45:01,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:01,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1894288489, now seen corresponding path program 1 times [2023-12-20 14:45:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707123371] [2023-12-20 14:45:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:01,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707123371] [2023-12-20 14:45:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707123371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:01,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044768066] [2023-12-20 14:45:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:01,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:01,712 INFO L87 Difference]: Start difference. First operand has 365 states, 323 states have (on average 1.7182662538699691) internal successors, (555), 328 states have internal predecessors, (555), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-20 14:45:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:02,325 INFO L93 Difference]: Finished difference Result 719 states and 1206 transitions. [2023-12-20 14:45:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-20 14:45:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:02,348 INFO L225 Difference]: With dead ends: 719 [2023-12-20 14:45:02,348 INFO L226 Difference]: Without dead ends: 368 [2023-12-20 14:45:02,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:02,360 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 325 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:02,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 789 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-20 14:45:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360. [2023-12-20 14:45:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 320 states have (on average 1.603125) internal successors, (513), 323 states have internal predecessors, (513), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-20 14:45:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 571 transitions. [2023-12-20 14:45:02,424 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 571 transitions. Word has length 37 [2023-12-20 14:45:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:02,424 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 571 transitions. [2023-12-20 14:45:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-20 14:45:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 571 transitions. [2023-12-20 14:45:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 14:45:02,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:02,427 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] [2023-12-20 14:45:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:45:02,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:02,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673305, now seen corresponding path program 1 times [2023-12-20 14:45:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:02,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677220494] [2023-12-20 14:45:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677220494] [2023-12-20 14:45:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677220494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230211611] [2023-12-20 14:45:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:02,518 INFO L87 Difference]: Start difference. First operand 360 states and 571 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:02,951 INFO L93 Difference]: Finished difference Result 477 states and 741 transitions. [2023-12-20 14:45:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-20 14:45:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:02,955 INFO L225 Difference]: With dead ends: 477 [2023-12-20 14:45:02,955 INFO L226 Difference]: Without dead ends: 421 [2023-12-20 14:45:02,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:02,956 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 767 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:02,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 621 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-20 14:45:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 415. [2023-12-20 14:45:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 368 states have (on average 1.576086956521739) internal successors, (580), 372 states have internal predecessors, (580), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-12-20 14:45:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 652 transitions. [2023-12-20 14:45:02,993 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 652 transitions. Word has length 37 [2023-12-20 14:45:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:02,993 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 652 transitions. [2023-12-20 14:45:02,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 652 transitions. [2023-12-20 14:45:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 14:45:03,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:03,000 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] [2023-12-20 14:45:03,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:45:03,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:03,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1827067670, now seen corresponding path program 1 times [2023-12-20 14:45:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441219276] [2023-12-20 14:45:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:45:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:03,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441219276] [2023-12-20 14:45:03,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441219276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:03,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:03,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512149733] [2023-12-20 14:45:03,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:03,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:03,086 INFO L87 Difference]: Start difference. First operand 415 states and 652 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:03,531 INFO L93 Difference]: Finished difference Result 649 states and 996 transitions. [2023-12-20 14:45:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-20 14:45:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:03,537 INFO L225 Difference]: With dead ends: 649 [2023-12-20 14:45:03,537 INFO L226 Difference]: Without dead ends: 538 [2023-12-20 14:45:03,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:03,539 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 784 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:03,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 628 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-20 14:45:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 515. [2023-12-20 14:45:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 455 states have (on average 1.5340659340659342) internal successors, (698), 460 states have internal predecessors, (698), 42 states have call successors, (42), 15 states have call predecessors, (42), 16 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2023-12-20 14:45:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 792 transitions. [2023-12-20 14:45:03,566 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 792 transitions. Word has length 38 [2023-12-20 14:45:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:03,567 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 792 transitions. [2023-12-20 14:45:03,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 792 transitions. [2023-12-20 14:45:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 14:45:03,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:03,569 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] [2023-12-20 14:45:03,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:45:03,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:03,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash 731646761, now seen corresponding path program 1 times [2023-12-20 14:45:03,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:03,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308242767] [2023-12-20 14:45:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:03,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:45:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:03,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:03,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308242767] [2023-12-20 14:45:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308242767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:03,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:03,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:03,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299191232] [2023-12-20 14:45:03,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:03,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:03,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:03,620 INFO L87 Difference]: Start difference. First operand 515 states and 792 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:04,119 INFO L93 Difference]: Finished difference Result 915 states and 1343 transitions. [2023-12-20 14:45:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-20 14:45:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:04,123 INFO L225 Difference]: With dead ends: 915 [2023-12-20 14:45:04,123 INFO L226 Difference]: Without dead ends: 704 [2023-12-20 14:45:04,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:04,125 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 304 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:04,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 885 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-20 14:45:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 600. [2023-12-20 14:45:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 531 states have (on average 1.512241054613936) internal successors, (803), 538 states have internal predecessors, (803), 46 states have call successors, (46), 20 states have call predecessors, (46), 21 states have return successors, (54), 42 states have call predecessors, (54), 44 states have call successors, (54) [2023-12-20 14:45:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 903 transitions. [2023-12-20 14:45:04,153 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 903 transitions. Word has length 39 [2023-12-20 14:45:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:04,153 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 903 transitions. [2023-12-20 14:45:04,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:45:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 903 transitions. [2023-12-20 14:45:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 14:45:04,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:04,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:04,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:45:04,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:04,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1083907020, now seen corresponding path program 1 times [2023-12-20 14:45:04,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:04,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530146592] [2023-12-20 14:45:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 14:45:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:45:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:45:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:04,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530146592] [2023-12-20 14:45:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530146592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:04,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775136756] [2023-12-20 14:45:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:04,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:04,226 INFO L87 Difference]: Start difference. First operand 600 states and 903 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:04,682 INFO L93 Difference]: Finished difference Result 1077 states and 1560 transitions. [2023-12-20 14:45:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-20 14:45:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:04,687 INFO L225 Difference]: With dead ends: 1077 [2023-12-20 14:45:04,687 INFO L226 Difference]: Without dead ends: 781 [2023-12-20 14:45:04,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:04,689 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 293 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:04,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 930 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:45:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-20 14:45:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 747. [2023-12-20 14:45:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 657 states have (on average 1.4596651445966515) internal successors, (959), 666 states have internal predecessors, (959), 58 states have call successors, (58), 27 states have call predecessors, (58), 30 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2023-12-20 14:45:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1091 transitions. [2023-12-20 14:45:04,723 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1091 transitions. Word has length 54 [2023-12-20 14:45:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:04,723 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1091 transitions. [2023-12-20 14:45:04,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1091 transitions. [2023-12-20 14:45:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:45:04,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:04,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:45:04,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:04,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1871906558, now seen corresponding path program 1 times [2023-12-20 14:45:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:04,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696469310] [2023-12-20 14:45:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:45:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:45:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:45:04,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:04,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696469310] [2023-12-20 14:45:04,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696469310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:04,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452659261] [2023-12-20 14:45:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:04,778 INFO L87 Difference]: Start difference. First operand 747 states and 1091 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:05,158 INFO L93 Difference]: Finished difference Result 1305 states and 1842 transitions. [2023-12-20 14:45:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:05,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-20 14:45:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:05,163 INFO L225 Difference]: With dead ends: 1305 [2023-12-20 14:45:05,163 INFO L226 Difference]: Without dead ends: 903 [2023-12-20 14:45:05,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:05,171 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 763 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:05,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 640 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:45:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-12-20 14:45:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 854. [2023-12-20 14:45:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 751 states have (on average 1.4274300932090547) internal successors, (1072), 762 states have internal predecessors, (1072), 64 states have call successors, (64), 32 states have call predecessors, (64), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2023-12-20 14:45:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1220 transitions. [2023-12-20 14:45:05,239 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1220 transitions. Word has length 59 [2023-12-20 14:45:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:05,239 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1220 transitions. [2023-12-20 14:45:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1220 transitions. [2023-12-20 14:45:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:45:05,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:05,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:05,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:45:05,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash 894515503, now seen corresponding path program 1 times [2023-12-20 14:45:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622831683] [2023-12-20 14:45:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:05,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622831683] [2023-12-20 14:45:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622831683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:45:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51505348] [2023-12-20 14:45:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:45:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:45:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:05,403 INFO L87 Difference]: Start difference. First operand 854 states and 1220 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:05,955 INFO L93 Difference]: Finished difference Result 1340 states and 1882 transitions. [2023-12-20 14:45:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-20 14:45:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:05,959 INFO L225 Difference]: With dead ends: 1340 [2023-12-20 14:45:05,960 INFO L226 Difference]: Without dead ends: 821 [2023-12-20 14:45:05,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:05,961 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 245 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:05,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1148 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:45:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-20 14:45:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 748. [2023-12-20 14:45:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 659 states have (on average 1.4355083459787557) internal successors, (946), 669 states have internal predecessors, (946), 56 states have call successors, (56), 27 states have call predecessors, (56), 31 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-20 14:45:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1072 transitions. [2023-12-20 14:45:05,990 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1072 transitions. Word has length 60 [2023-12-20 14:45:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:05,991 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1072 transitions. [2023-12-20 14:45:05,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 14:45:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1072 transitions. [2023-12-20 14:45:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:45:05,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:05,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:45:05,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1602812177, now seen corresponding path program 1 times [2023-12-20 14:45:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661389417] [2023-12-20 14:45:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:45:06,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661389417] [2023-12-20 14:45:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661389417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409139663] [2023-12-20 14:45:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:06,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:06,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:06,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:06,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:45:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:45:06,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:06,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:45:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409139663] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:06,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 14:45:06,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-20 14:45:06,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738438738] [2023-12-20 14:45:06,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:06,363 INFO L87 Difference]: Start difference. First operand 748 states and 1072 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:06,550 INFO L93 Difference]: Finished difference Result 797 states and 1133 transitions. [2023-12-20 14:45:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:45:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-20 14:45:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:06,556 INFO L225 Difference]: With dead ends: 797 [2023-12-20 14:45:06,556 INFO L226 Difference]: Without dead ends: 794 [2023-12-20 14:45:06,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:45:06,558 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1025 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:06,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 601 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:45:06,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-20 14:45:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 747. [2023-12-20 14:45:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 659 states have (on average 1.43247344461305) internal successors, (944), 668 states have internal predecessors, (944), 55 states have call successors, (55), 27 states have call predecessors, (55), 31 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-20 14:45:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1069 transitions. [2023-12-20 14:45:06,596 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1069 transitions. Word has length 60 [2023-12-20 14:45:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:06,597 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1069 transitions. [2023-12-20 14:45:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 14:45:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1069 transitions. [2023-12-20 14:45:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:45:06,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:06,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:06,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:06,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:06,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1851173093, now seen corresponding path program 1 times [2023-12-20 14:45:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452421624] [2023-12-20 14:45:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:45:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452421624] [2023-12-20 14:45:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452421624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470177238] [2023-12-20 14:45:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:06,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:06,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:06,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:45:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:45:06,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:07,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:45:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:45:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470177238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:45:07,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:45:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-20 14:45:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640696655] [2023-12-20 14:45:07,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:45:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:45:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:45:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:45:07,275 INFO L87 Difference]: Start difference. First operand 747 states and 1069 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-20 14:45:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:08,348 INFO L93 Difference]: Finished difference Result 1983 states and 2721 transitions. [2023-12-20 14:45:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:45:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-20 14:45:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:08,355 INFO L225 Difference]: With dead ends: 1983 [2023-12-20 14:45:08,355 INFO L226 Difference]: Without dead ends: 1585 [2023-12-20 14:45:08,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:45:08,361 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1443 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:08,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2158 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:45:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2023-12-20 14:45:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1076. [2023-12-20 14:45:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 951 states have (on average 1.3859095688748686) internal successors, (1318), 967 states have internal predecessors, (1318), 74 states have call successors, (74), 40 states have call predecessors, (74), 49 states have return successors, (101), 69 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-20 14:45:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1493 transitions. [2023-12-20 14:45:08,440 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1493 transitions. Word has length 61 [2023-12-20 14:45:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:08,440 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1493 transitions. [2023-12-20 14:45:08,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-20 14:45:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1493 transitions. [2023-12-20 14:45:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:45:08,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:08,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:08,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:08,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-20 14:45:08,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:08,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash -246353664, now seen corresponding path program 1 times [2023-12-20 14:45:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003813298] [2023-12-20 14:45:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:45:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 14:45:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 14:45:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:08,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003813298] [2023-12-20 14:45:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003813298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:08,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:08,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:45:08,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856243400] [2023-12-20 14:45:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:08,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:45:08,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:45:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:45:08,722 INFO L87 Difference]: Start difference. First operand 1076 states and 1493 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-20 14:45:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:09,120 INFO L93 Difference]: Finished difference Result 1710 states and 2316 transitions. [2023-12-20 14:45:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:45:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-20 14:45:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:09,125 INFO L225 Difference]: With dead ends: 1710 [2023-12-20 14:45:09,125 INFO L226 Difference]: Without dead ends: 1045 [2023-12-20 14:45:09,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:09,127 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 786 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:09,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 654 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:45:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-20 14:45:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 968. [2023-12-20 14:45:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 856 states have (on average 1.3901869158878504) internal successors, (1190), 872 states have internal predecessors, (1190), 67 states have call successors, (67), 35 states have call predecessors, (67), 43 states have return successors, (90), 61 states have call predecessors, (90), 66 states have call successors, (90) [2023-12-20 14:45:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1347 transitions. [2023-12-20 14:45:09,180 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1347 transitions. Word has length 78 [2023-12-20 14:45:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:09,181 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1347 transitions. [2023-12-20 14:45:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-20 14:45:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1347 transitions. [2023-12-20 14:45:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 14:45:09,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:09,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:45:09,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:09,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1354601071, now seen corresponding path program 1 times [2023-12-20 14:45:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902456548] [2023-12-20 14:45:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:45:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:45:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 14:45:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 14:45:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 14:45:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 14:45:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902456548] [2023-12-20 14:45:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902456548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:45:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831222226] [2023-12-20 14:45:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:45:09,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:45:09,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:45:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:45:09,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:45:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:45:09,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:45:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831222226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:09,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:45:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 14:45:09,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188347556] [2023-12-20 14:45:09,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:09,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:45:09,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:45:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:09,427 INFO L87 Difference]: Start difference. First operand 968 states and 1347 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:45:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:09,527 INFO L93 Difference]: Finished difference Result 1193 states and 1635 transitions. [2023-12-20 14:45:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:45:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-20 14:45:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:09,530 INFO L225 Difference]: With dead ends: 1193 [2023-12-20 14:45:09,530 INFO L226 Difference]: Without dead ends: 301 [2023-12-20 14:45:09,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:09,532 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 53 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:09,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1061 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:45:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-20 14:45:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-20 14:45:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 270 states have (on average 1.625925925925926) internal successors, (439), 271 states have internal predecessors, (439), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 14:45:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 487 transitions. [2023-12-20 14:45:09,548 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 487 transitions. Word has length 92 [2023-12-20 14:45:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:09,548 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 487 transitions. [2023-12-20 14:45:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-20 14:45:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 487 transitions. [2023-12-20 14:45:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:09,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:09,550 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] [2023-12-20 14:45:09,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:45:09,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:45:09,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:09,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1252646486, now seen corresponding path program 1 times [2023-12-20 14:45:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:09,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166698300] [2023-12-20 14:45:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:09,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166698300] [2023-12-20 14:45:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166698300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:45:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933604652] [2023-12-20 14:45:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:45:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:45:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:09,923 INFO L87 Difference]: Start difference. First operand 301 states and 487 transitions. 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:11,294 INFO L93 Difference]: Finished difference Result 706 states and 1162 transitions. [2023-12-20 14:45:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:45:11,294 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:11,297 INFO L225 Difference]: With dead ends: 706 [2023-12-20 14:45:11,297 INFO L226 Difference]: Without dead ends: 411 [2023-12-20 14:45:11,298 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 [2023-12-20 14:45:11,298 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 834 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:11,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 540 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:45:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-20 14:45:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 301. [2023-12-20 14:45:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 270 states have (on average 1.6222222222222222) internal successors, (438), 271 states have internal predecessors, (438), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 14:45:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 486 transitions. [2023-12-20 14:45:11,316 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 486 transitions. Word has length 141 [2023-12-20 14:45:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 486 transitions. [2023-12-20 14:45:11,317 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 486 transitions. [2023-12-20 14:45:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:11,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:11,318 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] [2023-12-20 14:45:11,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:45:11,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:11,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1424880360, now seen corresponding path program 1 times [2023-12-20 14:45:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:11,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702107005] [2023-12-20 14:45:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:11,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702107005] [2023-12-20 14:45:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702107005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:11,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:11,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:45:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519572173] [2023-12-20 14:45:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:45:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:45:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:45:11,481 INFO L87 Difference]: Start difference. First operand 301 states and 486 transitions. 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:12,820 INFO L93 Difference]: Finished difference Result 698 states and 1145 transitions. [2023-12-20 14:45:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:45:12,821 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:12,825 INFO L225 Difference]: With dead ends: 698 [2023-12-20 14:45:12,826 INFO L226 Difference]: Without dead ends: 411 [2023-12-20 14:45:12,829 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 [2023-12-20 14:45:12,830 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 825 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:12,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 538 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:45:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-20 14:45:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 301. [2023-12-20 14:45:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 270 states have (on average 1.6185185185185185) internal successors, (437), 271 states have internal predecessors, (437), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 14:45:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 485 transitions. [2023-12-20 14:45:12,873 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 485 transitions. Word has length 141 [2023-12-20 14:45:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:12,873 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 485 transitions. [2023-12-20 14:45:12,873 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 485 transitions. [2023-12-20 14:45:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:12,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:12,875 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] [2023-12-20 14:45:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:45:12,875 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:12,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:12,875 INFO L85 PathProgramCache]: Analyzing trace with hash -995222054, now seen corresponding path program 1 times [2023-12-20 14:45:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910458606] [2023-12-20 14:45:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:12,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910458606] [2023-12-20 14:45:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910458606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:45:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494302832] [2023-12-20 14:45:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:13,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:45:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:13,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:45:13,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:45:13,101 INFO L87 Difference]: Start difference. First operand 301 states and 485 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:15,491 INFO L93 Difference]: Finished difference Result 1104 states and 1823 transitions. [2023-12-20 14:45:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:45:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:15,496 INFO L225 Difference]: With dead ends: 1104 [2023-12-20 14:45:15,496 INFO L226 Difference]: Without dead ends: 820 [2023-12-20 14:45:15,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:45:15,498 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1258 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:15,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 908 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 14:45:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-20 14:45:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 601. [2023-12-20 14:45:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 544 states have (on average 1.630514705882353) internal successors, (887), 546 states have internal predecessors, (887), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-12-20 14:45:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 976 transitions. [2023-12-20 14:45:15,532 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 976 transitions. Word has length 141 [2023-12-20 14:45:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:15,533 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 976 transitions. [2023-12-20 14:45:15,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 976 transitions. [2023-12-20 14:45:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:15,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:15,535 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] [2023-12-20 14:45:15,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:45:15,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:15,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash -596030822, now seen corresponding path program 1 times [2023-12-20 14:45:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804265845] [2023-12-20 14:45:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804265845] [2023-12-20 14:45:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804265845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:15,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:15,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059969157] [2023-12-20 14:45:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:15,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:15,840 INFO L87 Difference]: Start difference. First operand 601 states and 976 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:18,908 INFO L93 Difference]: Finished difference Result 1829 states and 3021 transitions. [2023-12-20 14:45:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:18,909 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:18,914 INFO L225 Difference]: With dead ends: 1829 [2023-12-20 14:45:18,915 INFO L226 Difference]: Without dead ends: 1245 [2023-12-20 14:45:18,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:18,917 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1297 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:18,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 1722 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:45:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-20 14:45:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 878. [2023-12-20 14:45:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 795 states have (on average 1.6238993710691825) internal successors, (1291), 798 states have internal predecessors, (1291), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-20 14:45:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1420 transitions. [2023-12-20 14:45:18,982 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1420 transitions. Word has length 141 [2023-12-20 14:45:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:18,982 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1420 transitions. [2023-12-20 14:45:18,982 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1420 transitions. [2023-12-20 14:45:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:18,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:18,984 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] [2023-12-20 14:45:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:45:18,984 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:18,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash -107983716, now seen corresponding path program 1 times [2023-12-20 14:45:18,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:18,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094622488] [2023-12-20 14:45:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:19,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094622488] [2023-12-20 14:45:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094622488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:19,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:19,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:19,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476313459] [2023-12-20 14:45:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:19,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:19,192 INFO L87 Difference]: Start difference. First operand 878 states and 1420 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:20,546 INFO L93 Difference]: Finished difference Result 2120 states and 3499 transitions. [2023-12-20 14:45:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:20,547 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:20,552 INFO L225 Difference]: With dead ends: 2120 [2023-12-20 14:45:20,553 INFO L226 Difference]: Without dead ends: 1259 [2023-12-20 14:45:20,555 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 [2023-12-20 14:45:20,556 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1054 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:20,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 742 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:45:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-12-20 14:45:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 878. [2023-12-20 14:45:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 795 states have (on average 1.620125786163522) internal successors, (1288), 798 states have internal predecessors, (1288), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-20 14:45:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1417 transitions. [2023-12-20 14:45:20,614 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1417 transitions. Word has length 141 [2023-12-20 14:45:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:20,614 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1417 transitions. [2023-12-20 14:45:20,615 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1417 transitions. [2023-12-20 14:45:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:20,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:20,617 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] [2023-12-20 14:45:20,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:45:20,617 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:20,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1390156002, now seen corresponding path program 1 times [2023-12-20 14:45:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279715481] [2023-12-20 14:45:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:20,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279715481] [2023-12-20 14:45:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279715481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:20,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824706167] [2023-12-20 14:45:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:20,836 INFO L87 Difference]: Start difference. First operand 878 states and 1417 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:22,264 INFO L93 Difference]: Finished difference Result 2116 states and 3482 transitions. [2023-12-20 14:45:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:22,265 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:22,270 INFO L225 Difference]: With dead ends: 2116 [2023-12-20 14:45:22,270 INFO L226 Difference]: Without dead ends: 1255 [2023-12-20 14:45:22,273 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 [2023-12-20 14:45:22,273 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1052 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:22,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 742 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:45:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-12-20 14:45:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 878. [2023-12-20 14:45:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 795 states have (on average 1.6163522012578617) internal successors, (1285), 798 states have internal predecessors, (1285), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-20 14:45:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1414 transitions. [2023-12-20 14:45:22,321 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1414 transitions. Word has length 141 [2023-12-20 14:45:22,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:22,321 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1414 transitions. [2023-12-20 14:45:22,322 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1414 transitions. [2023-12-20 14:45:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:22,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:22,323 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] [2023-12-20 14:45:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:45:22,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:22,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1062335580, now seen corresponding path program 1 times [2023-12-20 14:45:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897790567] [2023-12-20 14:45:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897790567] [2023-12-20 14:45:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897790567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633963412] [2023-12-20 14:45:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:22,542 INFO L87 Difference]: Start difference. First operand 878 states and 1414 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:23,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:23,819 INFO L93 Difference]: Finished difference Result 2112 states and 3465 transitions. [2023-12-20 14:45:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:23,820 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:23,826 INFO L225 Difference]: With dead ends: 2112 [2023-12-20 14:45:23,826 INFO L226 Difference]: Without dead ends: 1251 [2023-12-20 14:45:23,828 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 [2023-12-20 14:45:23,829 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1050 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:23,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 742 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:45:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-20 14:45:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 878. [2023-12-20 14:45:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 795 states have (on average 1.6125786163522013) internal successors, (1282), 798 states have internal predecessors, (1282), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-20 14:45:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1411 transitions. [2023-12-20 14:45:23,880 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1411 transitions. Word has length 141 [2023-12-20 14:45:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:23,881 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1411 transitions. [2023-12-20 14:45:23,881 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1411 transitions. [2023-12-20 14:45:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:23,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:23,882 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] [2023-12-20 14:45:23,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:45:23,883 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:23,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -659667106, now seen corresponding path program 1 times [2023-12-20 14:45:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140313793] [2023-12-20 14:45:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140313793] [2023-12-20 14:45:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140313793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:24,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319831889] [2023-12-20 14:45:24,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:24,099 INFO L87 Difference]: Start difference. First operand 878 states and 1411 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:27,069 INFO L93 Difference]: Finished difference Result 2878 states and 4699 transitions. [2023-12-20 14:45:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:27,069 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:27,079 INFO L225 Difference]: With dead ends: 2878 [2023-12-20 14:45:27,079 INFO L226 Difference]: Without dead ends: 2017 [2023-12-20 14:45:27,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:27,082 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1268 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:27,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1720 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 14:45:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-12-20 14:45:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1445. [2023-12-20 14:45:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1310 states have (on average 1.6053435114503818) internal successors, (2103), 1315 states have internal predecessors, (2103), 100 states have call successors, (100), 30 states have call predecessors, (100), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-20 14:45:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2316 transitions. [2023-12-20 14:45:27,170 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2316 transitions. Word has length 141 [2023-12-20 14:45:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:27,170 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2316 transitions. [2023-12-20 14:45:27,171 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2316 transitions. [2023-12-20 14:45:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:27,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:27,172 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] [2023-12-20 14:45:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:45:27,173 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash -992310244, now seen corresponding path program 1 times [2023-12-20 14:45:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652040482] [2023-12-20 14:45:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:27,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:27,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652040482] [2023-12-20 14:45:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652040482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:27,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:27,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179811613] [2023-12-20 14:45:27,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:27,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:27,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:27,372 INFO L87 Difference]: Start difference. First operand 1445 states and 2316 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:28,815 INFO L93 Difference]: Finished difference Result 3432 states and 5592 transitions. [2023-12-20 14:45:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:28,815 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:28,824 INFO L225 Difference]: With dead ends: 3432 [2023-12-20 14:45:28,824 INFO L226 Difference]: Without dead ends: 2004 [2023-12-20 14:45:28,827 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 [2023-12-20 14:45:28,828 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 919 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:28,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 882 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:45:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-12-20 14:45:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1445. [2023-12-20 14:45:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1310 states have (on average 1.6015267175572518) internal successors, (2098), 1315 states have internal predecessors, (2098), 100 states have call successors, (100), 30 states have call predecessors, (100), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-20 14:45:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2311 transitions. [2023-12-20 14:45:28,915 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2311 transitions. Word has length 141 [2023-12-20 14:45:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:28,915 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2311 transitions. [2023-12-20 14:45:28,916 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2311 transitions. [2023-12-20 14:45:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:28,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:28,917 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] [2023-12-20 14:45:28,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:45:28,918 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:28,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash 936621982, now seen corresponding path program 1 times [2023-12-20 14:45:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416447156] [2023-12-20 14:45:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416447156] [2023-12-20 14:45:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416447156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167047908] [2023-12-20 14:45:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:29,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:29,137 INFO L87 Difference]: Start difference. First operand 1445 states and 2311 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:32,230 INFO L93 Difference]: Finished difference Result 4915 states and 7968 transitions. [2023-12-20 14:45:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:32,232 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:32,249 INFO L225 Difference]: With dead ends: 4915 [2023-12-20 14:45:32,249 INFO L226 Difference]: Without dead ends: 3487 [2023-12-20 14:45:32,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:32,255 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1260 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:32,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1720 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:45:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-12-20 14:45:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2579. [2023-12-20 14:45:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2340 states have (on average 1.5940170940170941) internal successors, (3730), 2349 states have internal predecessors, (3730), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-20 14:45:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4117 transitions. [2023-12-20 14:45:32,424 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4117 transitions. Word has length 141 [2023-12-20 14:45:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:32,424 INFO L495 AbstractCegarLoop]: Abstraction has 2579 states and 4117 transitions. [2023-12-20 14:45:32,425 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4117 transitions. [2023-12-20 14:45:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:32,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:32,427 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] [2023-12-20 14:45:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:45:32,427 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:32,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1356459044, now seen corresponding path program 1 times [2023-12-20 14:45:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496435725] [2023-12-20 14:45:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496435725] [2023-12-20 14:45:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496435725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754789622] [2023-12-20 14:45:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:32,649 INFO L87 Difference]: Start difference. First operand 2579 states and 4117 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:35,605 INFO L93 Difference]: Finished difference Result 8995 states and 14560 transitions. [2023-12-20 14:45:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:35,606 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:35,636 INFO L225 Difference]: With dead ends: 8995 [2023-12-20 14:45:35,636 INFO L226 Difference]: Without dead ends: 6433 [2023-12-20 14:45:35,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:45:35,647 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1265 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:35,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1720 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:45:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2023-12-20 14:45:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 4852. [2023-12-20 14:45:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4405 states have (on average 1.5891032917139614) internal successors, (7000), 4422 states have internal predecessors, (7000), 328 states have call successors, (328), 102 states have call predecessors, (328), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2023-12-20 14:45:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7753 transitions. [2023-12-20 14:45:36,007 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7753 transitions. Word has length 141 [2023-12-20 14:45:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:36,007 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 7753 transitions. [2023-12-20 14:45:36,008 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7753 transitions. [2023-12-20 14:45:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:36,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:36,012 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] [2023-12-20 14:45:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:45:36,013 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:36,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash 370685918, now seen corresponding path program 1 times [2023-12-20 14:45:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557716459] [2023-12-20 14:45:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557716459] [2023-12-20 14:45:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557716459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:36,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:36,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:36,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083306442] [2023-12-20 14:45:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:36,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:36,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:36,242 INFO L87 Difference]: Start difference. First operand 4852 states and 7753 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:39,878 INFO L93 Difference]: Finished difference Result 19184 states and 31080 transitions. [2023-12-20 14:45:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:39,879 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:39,930 INFO L225 Difference]: With dead ends: 19184 [2023-12-20 14:45:39,930 INFO L226 Difference]: Without dead ends: 14349 [2023-12-20 14:45:39,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:45:39,950 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1352 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:39,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1713 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:45:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14349 states. [2023-12-20 14:45:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14349 to 9398. [2023-12-20 14:45:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9398 states, 8551 states have (on average 1.5881183487311425) internal successors, (13580), 8584 states have internal predecessors, (13580), 616 states have call successors, (616), 198 states have call predecessors, (616), 230 states have return successors, (891), 647 states have call predecessors, (891), 616 states have call successors, (891) [2023-12-20 14:45:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 15087 transitions. [2023-12-20 14:45:40,562 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 15087 transitions. Word has length 141 [2023-12-20 14:45:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 9398 states and 15087 transitions. [2023-12-20 14:45:40,563 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 15087 transitions. [2023-12-20 14:45:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:40,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:40,570 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] [2023-12-20 14:45:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:45:40,570 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:40,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1276677024, now seen corresponding path program 1 times [2023-12-20 14:45:40,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:40,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713292588] [2023-12-20 14:45:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:40,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:40,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713292588] [2023-12-20 14:45:40,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713292588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:40,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:40,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:40,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361874073] [2023-12-20 14:45:40,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:40,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:40,824 INFO L87 Difference]: Start difference. First operand 9398 states and 15087 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:44,372 INFO L93 Difference]: Finished difference Result 37104 states and 60352 transitions. [2023-12-20 14:45:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:44,373 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:44,469 INFO L225 Difference]: With dead ends: 37104 [2023-12-20 14:45:44,470 INFO L226 Difference]: Without dead ends: 27723 [2023-12-20 14:45:44,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:45:44,512 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1587 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:44,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1709 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 14:45:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27723 states. [2023-12-20 14:45:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27723 to 18327. [2023-12-20 14:45:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18327 states, 16696 states have (on average 1.5878054623862004) internal successors, (26510), 16761 states have internal predecessors, (26510), 1176 states have call successors, (1176), 390 states have call predecessors, (1176), 454 states have return successors, (1969), 1239 states have call predecessors, (1969), 1176 states have call successors, (1969) [2023-12-20 14:45:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18327 states to 18327 states and 29655 transitions. [2023-12-20 14:45:45,878 INFO L78 Accepts]: Start accepts. Automaton has 18327 states and 29655 transitions. Word has length 141 [2023-12-20 14:45:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:45,879 INFO L495 AbstractCegarLoop]: Abstraction has 18327 states and 29655 transitions. [2023-12-20 14:45:45,879 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 18327 states and 29655 transitions. [2023-12-20 14:45:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:45,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:45,891 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] [2023-12-20 14:45:45,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:45:45,892 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:45,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash 886939550, now seen corresponding path program 1 times [2023-12-20 14:45:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:45,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045729934] [2023-12-20 14:45:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:46,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:46,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045729934] [2023-12-20 14:45:46,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045729934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:46,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:46,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064678563] [2023-12-20 14:45:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:46,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:46,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:46,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:46,103 INFO L87 Difference]: Start difference. First operand 18327 states and 29655 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:50,541 INFO L93 Difference]: Finished difference Result 72015 states and 117942 transitions. [2023-12-20 14:45:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:50,541 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:50,773 INFO L225 Difference]: With dead ends: 72015 [2023-12-20 14:45:50,773 INFO L226 Difference]: Without dead ends: 53705 [2023-12-20 14:45:50,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:45:50,840 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1552 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:50,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1713 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 14:45:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53705 states. [2023-12-20 14:45:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53705 to 36344. [2023-12-20 14:45:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36344 states, 33177 states have (on average 1.5880881333453898) internal successors, (52688), 33306 states have internal predecessors, (52688), 2264 states have call successors, (2264), 774 states have call predecessors, (2264), 902 states have return successors, (4579), 2391 states have call predecessors, (4579), 2264 states have call successors, (4579) [2023-12-20 14:45:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36344 states to 36344 states and 59531 transitions. [2023-12-20 14:45:53,162 INFO L78 Accepts]: Start accepts. Automaton has 36344 states and 59531 transitions. Word has length 141 [2023-12-20 14:45:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:53,163 INFO L495 AbstractCegarLoop]: Abstraction has 36344 states and 59531 transitions. [2023-12-20 14:45:53,163 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 36344 states and 59531 transitions. [2023-12-20 14:45:53,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:45:53,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:53,186 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] [2023-12-20 14:45:53,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:45:53,187 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -151645024, now seen corresponding path program 1 times [2023-12-20 14:45:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384297382] [2023-12-20 14:45:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:45:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:45:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:45:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:45:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:53,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384297382] [2023-12-20 14:45:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384297382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:53,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759116654] [2023-12-20 14:45:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:53,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:53,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:53,405 INFO L87 Difference]: Start difference. First operand 36344 states and 59531 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:59,995 INFO L93 Difference]: Finished difference Result 141294 states and 234108 transitions. [2023-12-20 14:45:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:59,995 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:45:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:00,434 INFO L225 Difference]: With dead ends: 141294 [2023-12-20 14:46:00,434 INFO L226 Difference]: Without dead ends: 104967 [2023-12-20 14:46:00,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:00,519 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1322 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:00,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1713 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 14:46:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104967 states. [2023-12-20 14:46:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104967 to 72377. [2023-12-20 14:46:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72377 states, 66202 states have (on average 1.588622700220537) internal successors, (105170), 66459 states have internal predecessors, (105170), 4376 states have call successors, (4376), 1542 states have call predecessors, (4376), 1798 states have return successors, (11193), 4631 states have call predecessors, (11193), 4376 states have call successors, (11193) [2023-12-20 14:46:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72377 states to 72377 states and 120739 transitions. [2023-12-20 14:46:05,033 INFO L78 Accepts]: Start accepts. Automaton has 72377 states and 120739 transitions. Word has length 141 [2023-12-20 14:46:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:05,033 INFO L495 AbstractCegarLoop]: Abstraction has 72377 states and 120739 transitions. [2023-12-20 14:46:05,033 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 72377 states and 120739 transitions. [2023-12-20 14:46:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:46:05,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:05,080 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] [2023-12-20 14:46:05,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:46:05,080 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:05,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2124810402, now seen corresponding path program 1 times [2023-12-20 14:46:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:05,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063706811] [2023-12-20 14:46:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:46:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:46:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:46:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063706811] [2023-12-20 14:46:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063706811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:05,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:05,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601489605] [2023-12-20 14:46:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:05,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:05,282 INFO L87 Difference]: Start difference. First operand 72377 states and 120739 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:14,129 INFO L93 Difference]: Finished difference Result 277933 states and 468946 transitions. [2023-12-20 14:46:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:14,129 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:46:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:15,155 INFO L225 Difference]: With dead ends: 277933 [2023-12-20 14:46:15,155 INFO L226 Difference]: Without dead ends: 205573 [2023-12-20 14:46:15,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:15,317 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1480 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:15,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1713 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:46:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205573 states. [2023-12-20 14:46:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205573 to 144442. [2023-12-20 14:46:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144442 states, 132379 states have (on average 1.589285309603487) internal successors, (210388), 132892 states have internal predecessors, (210388), 8472 states have call successors, (8472), 3078 states have call predecessors, (8472), 3590 states have return successors, (28667), 8983 states have call predecessors, (28667), 8472 states have call successors, (28667) [2023-12-20 14:46:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144442 states to 144442 states and 247527 transitions. [2023-12-20 14:46:23,740 INFO L78 Accepts]: Start accepts. Automaton has 144442 states and 247527 transitions. Word has length 141 [2023-12-20 14:46:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:23,740 INFO L495 AbstractCegarLoop]: Abstraction has 144442 states and 247527 transitions. [2023-12-20 14:46:23,740 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 144442 states and 247527 transitions. [2023-12-20 14:46:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:46:23,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:23,842 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] [2023-12-20 14:46:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:46:23,842 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:23,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 28296416, now seen corresponding path program 1 times [2023-12-20 14:46:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270331009] [2023-12-20 14:46:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:46:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:46:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:46:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270331009] [2023-12-20 14:46:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270331009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603706628] [2023-12-20 14:46:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:24,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:24,298 INFO L87 Difference]: Start difference. First operand 144442 states and 247527 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:32,418 INFO L93 Difference]: Finished difference Result 329996 states and 582335 transitions. [2023-12-20 14:46:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:46:32,419 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:46:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:33,298 INFO L225 Difference]: With dead ends: 329996 [2023-12-20 14:46:33,298 INFO L226 Difference]: Without dead ends: 185571 [2023-12-20 14:46:33,708 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 [2023-12-20 14:46:33,709 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1056 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:33,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 741 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:46:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185571 states. [2023-12-20 14:46:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185571 to 144442. [2023-12-20 14:46:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144442 states, 132379 states have (on average 1.5854100725945959) internal successors, (209875), 132892 states have internal predecessors, (209875), 8472 states have call successors, (8472), 3078 states have call predecessors, (8472), 3590 states have return successors, (28667), 8983 states have call predecessors, (28667), 8472 states have call successors, (28667) [2023-12-20 14:46:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144442 states to 144442 states and 247014 transitions. [2023-12-20 14:46:42,136 INFO L78 Accepts]: Start accepts. Automaton has 144442 states and 247014 transitions. Word has length 141 [2023-12-20 14:46:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:42,137 INFO L495 AbstractCegarLoop]: Abstraction has 144442 states and 247014 transitions. [2023-12-20 14:46:42,137 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 144442 states and 247014 transitions. [2023-12-20 14:46:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:46:42,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:42,212 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] [2023-12-20 14:46:42,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:46:42,212 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:42,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -594985186, now seen corresponding path program 1 times [2023-12-20 14:46:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860031299] [2023-12-20 14:46:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:42,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:46:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:46:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:46:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:46:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:42,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:42,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860031299] [2023-12-20 14:46:42,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860031299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:42,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:42,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:42,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19209057] [2023-12-20 14:46:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:42,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:42,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:42,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:42,402 INFO L87 Difference]: Start difference. First operand 144442 states and 247014 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:57,701 INFO L93 Difference]: Finished difference Result 540714 states and 936656 transitions. [2023-12-20 14:46:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:57,702 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:46:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:59,609 INFO L225 Difference]: With dead ends: 540714 [2023-12-20 14:46:59,610 INFO L226 Difference]: Without dead ends: 396289 [2023-12-20 14:47:00,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:00,201 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1408 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:00,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1713 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:47:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396289 states.