/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:31:35,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:31:35,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:31:35,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:31:35,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:31:35,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:31:35,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:31:35,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:31:35,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:31:35,777 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:31:35,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:31:35,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:31:35,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:31:35,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:31:35,779 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:31:35,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:31:35,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:31:35,780 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:31:35,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:31:35,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:31:35,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:31:35,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:31:35,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:31:35,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:31:35,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:31:35,783 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:31:35,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:31:35,784 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:31:35,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:31:35,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:31:35,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:31:35,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:31:35,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:31:35,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:31:35,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:31:35,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:31:35,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:31:35,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:31:35,788 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:31:36,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:31:36,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:31:36,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:31:36,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:31:36,036 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:31:36,037 INFO L431 ainManager$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 [2023-12-19 01:31:37,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:31:37,436 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:31:37,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2023-12-19 01:31:37,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5849d4a8/25d1e049ae904be1b99797e7460402e8/FLAG017527869 [2023-12-19 01:31:37,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5849d4a8/25d1e049ae904be1b99797e7460402e8 [2023-12-19 01:31:37,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:31:37,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:31:37,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:31:37,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:31:37,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:31:37,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:37,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ead0fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37, skipping insertion in model container [2023-12-19 01:31:37,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:37,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:31:37,667 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] [2023-12-19 01:31:37,711 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[5977,5990] [2023-12-19 01:31:37,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:31:37,804 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:31:37,828 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] [2023-12-19 01:31:37,842 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] [2023-12-19 01:31:37,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:31:37,914 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:31:37,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37 WrapperNode [2023-12-19 01:31:37,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:31:37,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:31:37,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:31:37,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:31:37,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:37,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:37,999 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 963 [2023-12-19 01:31:38,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:31:38,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:31:38,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:31:38,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:31:38,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,050 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]. [2023-12-19 01:31:38,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:31:38,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:31:38,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:31:38,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:31:38,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (1/1) ... [2023-12-19 01:31:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:31:38,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:38,160 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) [2023-12-19 01:31:38,167 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 [2023-12-19 01:31:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:31:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:31:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:31:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:31:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:31:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:31:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:31:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:31:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:31:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:31:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:31:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:31:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:31:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:31:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:31:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:31:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:31:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:31:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:31:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:31:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:31:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:31:38,296 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:31:38,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:31:39,187 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:31:39,273 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:31:39,273 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-19 01:31:39,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:31:39 BoogieIcfgContainer [2023-12-19 01:31:39,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:31:39,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:31:39,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:31:39,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:31:39,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:31:37" (1/3) ... [2023-12-19 01:31:39,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410db50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:31:39, skipping insertion in model container [2023-12-19 01:31:39,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:31:37" (2/3) ... [2023-12-19 01:31:39,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410db50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:31:39, skipping insertion in model container [2023-12-19 01:31:39,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:31:39" (3/3) ... [2023-12-19 01:31:39,284 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2023-12-19 01:31:39,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:31:39,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:31:39,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:31:39,366 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;@e885990, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:31:39,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:31:39,374 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) [2023-12-19 01:31:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:31:39,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:39,385 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] [2023-12-19 01:31:39,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:39,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1894288489, now seen corresponding path program 1 times [2023-12-19 01:31:39,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:39,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118733076] [2023-12-19 01:31:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:39,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118733076] [2023-12-19 01:31:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118733076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563114949] [2023-12-19 01:31:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:39,773 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) [2023-12-19 01:31:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:40,430 INFO L93 Difference]: Finished difference Result 719 states and 1206 transitions. [2023-12-19 01:31:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:40,432 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 [2023-12-19 01:31:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:40,452 INFO L225 Difference]: With dead ends: 719 [2023-12-19 01:31:40,452 INFO L226 Difference]: Without dead ends: 368 [2023-12-19 01:31:40,461 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 [2023-12-19 01:31:40,466 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 [2023-12-19 01:31:40,467 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] [2023-12-19 01:31:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-19 01:31:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360. [2023-12-19 01:31:40,559 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) [2023-12-19 01:31:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 571 transitions. [2023-12-19 01:31:40,564 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 571 transitions. Word has length 37 [2023-12-19 01:31:40,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:40,564 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 571 transitions. [2023-12-19 01:31:40,565 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) [2023-12-19 01:31:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 571 transitions. [2023-12-19 01:31:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:31:40,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:40,567 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] [2023-12-19 01:31:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:31:40,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673305, now seen corresponding path program 1 times [2023-12-19 01:31:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780099845] [2023-12-19 01:31:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:40,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:40,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780099845] [2023-12-19 01:31:40,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780099845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:40,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202749282] [2023-12-19 01:31:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:40,668 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) [2023-12-19 01:31:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:41,130 INFO L93 Difference]: Finished difference Result 477 states and 741 transitions. [2023-12-19 01:31:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:41,130 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 [2023-12-19 01:31:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:41,136 INFO L225 Difference]: With dead ends: 477 [2023-12-19 01:31:41,136 INFO L226 Difference]: Without dead ends: 421 [2023-12-19 01:31:41,137 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 [2023-12-19 01:31:41,138 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 [2023-12-19 01:31:41,139 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] [2023-12-19 01:31:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-19 01:31:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 415. [2023-12-19 01:31:41,176 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) [2023-12-19 01:31:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 652 transitions. [2023-12-19 01:31:41,180 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 652 transitions. Word has length 37 [2023-12-19 01:31:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:41,181 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 652 transitions. [2023-12-19 01:31:41,181 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) [2023-12-19 01:31:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 652 transitions. [2023-12-19 01:31:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:31:41,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:41,189 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] [2023-12-19 01:31:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:31:41,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:41,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1827067670, now seen corresponding path program 1 times [2023-12-19 01:31:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056414848] [2023-12-19 01:31:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:41,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:31:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:41,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:41,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056414848] [2023-12-19 01:31:41,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056414848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:41,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:41,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988939088] [2023-12-19 01:31:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:41,305 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) [2023-12-19 01:31:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:41,736 INFO L93 Difference]: Finished difference Result 649 states and 996 transitions. [2023-12-19 01:31:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:41,737 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 [2023-12-19 01:31:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:41,741 INFO L225 Difference]: With dead ends: 649 [2023-12-19 01:31:41,741 INFO L226 Difference]: Without dead ends: 538 [2023-12-19 01:31:41,742 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 [2023-12-19 01:31:41,746 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 [2023-12-19 01:31:41,747 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] [2023-12-19 01:31:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-19 01:31:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 515. [2023-12-19 01:31:41,780 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) [2023-12-19 01:31:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 792 transitions. [2023-12-19 01:31:41,787 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 792 transitions. Word has length 38 [2023-12-19 01:31:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:41,787 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 792 transitions. [2023-12-19 01:31:41,787 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) [2023-12-19 01:31:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 792 transitions. [2023-12-19 01:31:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:31:41,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:41,790 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] [2023-12-19 01:31:41,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:31:41,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:41,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:41,791 INFO L85 PathProgramCache]: Analyzing trace with hash 731646761, now seen corresponding path program 1 times [2023-12-19 01:31:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183308882] [2023-12-19 01:31:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:31:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183308882] [2023-12-19 01:31:41,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183308882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:41,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42796098] [2023-12-19 01:31:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:41,892 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) [2023-12-19 01:31:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:42,339 INFO L93 Difference]: Finished difference Result 915 states and 1343 transitions. [2023-12-19 01:31:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:42,341 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 [2023-12-19 01:31:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:42,345 INFO L225 Difference]: With dead ends: 915 [2023-12-19 01:31:42,345 INFO L226 Difference]: Without dead ends: 704 [2023-12-19 01:31:42,346 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 [2023-12-19 01:31:42,352 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 304 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-12-19 01:31:42,353 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] [2023-12-19 01:31:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-19 01:31:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 600. [2023-12-19 01:31:42,390 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) [2023-12-19 01:31:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 903 transitions. [2023-12-19 01:31:42,393 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 903 transitions. Word has length 39 [2023-12-19 01:31:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:42,394 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 903 transitions. [2023-12-19 01:31:42,394 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) [2023-12-19 01:31:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 903 transitions. [2023-12-19 01:31:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:31:42,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:42,397 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] [2023-12-19 01:31:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:31:42,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:42,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1083907020, now seen corresponding path program 1 times [2023-12-19 01:31:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930699549] [2023-12-19 01:31:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:31:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:31:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:31:42,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:42,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930699549] [2023-12-19 01:31:42,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930699549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:42,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410416716] [2023-12-19 01:31:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:42,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:42,501 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) [2023-12-19 01:31:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:43,033 INFO L93 Difference]: Finished difference Result 1077 states and 1560 transitions. [2023-12-19 01:31:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:43,033 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 [2023-12-19 01:31:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:43,038 INFO L225 Difference]: With dead ends: 1077 [2023-12-19 01:31:43,038 INFO L226 Difference]: Without dead ends: 781 [2023-12-19 01:31:43,039 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 [2023-12-19 01:31:43,040 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 293 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:43,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 930 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:31:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-19 01:31:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 747. [2023-12-19 01:31:43,078 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) [2023-12-19 01:31:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1091 transitions. [2023-12-19 01:31:43,087 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1091 transitions. Word has length 54 [2023-12-19 01:31:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:43,092 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1091 transitions. [2023-12-19 01:31:43,092 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) [2023-12-19 01:31:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1091 transitions. [2023-12-19 01:31:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:31:43,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:43,095 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] [2023-12-19 01:31:43,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:31:43,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:43,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1871906558, now seen corresponding path program 1 times [2023-12-19 01:31:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95841921] [2023-12-19 01:31:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:31:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:31:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:31:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95841921] [2023-12-19 01:31:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95841921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:43,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734961384] [2023-12-19 01:31:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:43,159 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) [2023-12-19 01:31:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:43,568 INFO L93 Difference]: Finished difference Result 1305 states and 1842 transitions. [2023-12-19 01:31:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:43,568 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 [2023-12-19 01:31:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:43,573 INFO L225 Difference]: With dead ends: 1305 [2023-12-19 01:31:43,573 INFO L226 Difference]: Without dead ends: 903 [2023-12-19 01:31:43,574 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 [2023-12-19 01:31:43,576 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 [2023-12-19 01:31:43,577 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] [2023-12-19 01:31:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-12-19 01:31:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 854. [2023-12-19 01:31:43,629 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) [2023-12-19 01:31:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1220 transitions. [2023-12-19 01:31:43,634 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1220 transitions. Word has length 59 [2023-12-19 01:31:43,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:43,634 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1220 transitions. [2023-12-19 01:31:43,634 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) [2023-12-19 01:31:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1220 transitions. [2023-12-19 01:31:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:31:43,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:43,636 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] [2023-12-19 01:31:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:31:43,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:43,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 894515503, now seen corresponding path program 1 times [2023-12-19 01:31:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967355893] [2023-12-19 01:31:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:31:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967355893] [2023-12-19 01:31:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967355893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:43,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:31:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150159486] [2023-12-19 01:31:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:31:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:31:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:31:43,758 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) [2023-12-19 01:31:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:44,320 INFO L93 Difference]: Finished difference Result 1340 states and 1882 transitions. [2023-12-19 01:31:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:31:44,321 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 [2023-12-19 01:31:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:44,325 INFO L225 Difference]: With dead ends: 1340 [2023-12-19 01:31:44,325 INFO L226 Difference]: Without dead ends: 821 [2023-12-19 01:31:44,327 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 [2023-12-19 01:31:44,328 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 [2023-12-19 01:31:44,328 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] [2023-12-19 01:31:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-19 01:31:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 748. [2023-12-19 01:31:44,359 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) [2023-12-19 01:31:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1072 transitions. [2023-12-19 01:31:44,363 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1072 transitions. Word has length 60 [2023-12-19 01:31:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:44,364 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1072 transitions. [2023-12-19 01:31:44,365 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) [2023-12-19 01:31:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1072 transitions. [2023-12-19 01:31:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:31:44,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:44,366 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] [2023-12-19 01:31:44,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:31:44,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:44,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1602812177, now seen corresponding path program 1 times [2023-12-19 01:31:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617637997] [2023-12-19 01:31:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:44,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:31:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617637997] [2023-12-19 01:31:44,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617637997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587242751] [2023-12-19 01:31:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:44,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:44,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:44,500 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) [2023-12-19 01:31:44,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:31:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:44,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:31:44,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:44,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:31:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:31:44,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587242751] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:44,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:31:44,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:31:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380984742] [2023-12-19 01:31:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:44,785 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) [2023-12-19 01:31:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:44,965 INFO L93 Difference]: Finished difference Result 797 states and 1133 transitions. [2023-12-19 01:31:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:31:44,966 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 [2023-12-19 01:31:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:44,970 INFO L225 Difference]: With dead ends: 797 [2023-12-19 01:31:44,970 INFO L226 Difference]: Without dead ends: 794 [2023-12-19 01:31:44,970 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 [2023-12-19 01:31:44,971 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 [2023-12-19 01:31:44,971 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] [2023-12-19 01:31:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-19 01:31:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 747. [2023-12-19 01:31:45,005 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) [2023-12-19 01:31:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1069 transitions. [2023-12-19 01:31:45,009 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1069 transitions. Word has length 60 [2023-12-19 01:31:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:45,010 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1069 transitions. [2023-12-19 01:31:45,010 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) [2023-12-19 01:31:45,010 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1069 transitions. [2023-12-19 01:31:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:31:45,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:45,011 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] [2023-12-19 01:31:45,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:45,224 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 [2023-12-19 01:31:45,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:45,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1851173093, now seen corresponding path program 1 times [2023-12-19 01:31:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:45,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371104347] [2023-12-19 01:31:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:31:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371104347] [2023-12-19 01:31:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371104347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162507965] [2023-12-19 01:31:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:45,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:45,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:45,353 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) [2023-12-19 01:31:45,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:31:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:45,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:31:45,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:45,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:31:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:31:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162507965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:31:45,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:31:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:31:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263485576] [2023-12-19 01:31:45,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:31:45,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:31:45,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:31:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:31:45,754 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) [2023-12-19 01:31:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:46,969 INFO L93 Difference]: Finished difference Result 1983 states and 2721 transitions. [2023-12-19 01:31:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:31:46,969 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 [2023-12-19 01:31:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:46,977 INFO L225 Difference]: With dead ends: 1983 [2023-12-19 01:31:46,977 INFO L226 Difference]: Without dead ends: 1585 [2023-12-19 01:31:46,979 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 [2023-12-19 01:31:46,982 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1443 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:46,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2158 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:31:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2023-12-19 01:31:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1076. [2023-12-19 01:31:47,037 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) [2023-12-19 01:31:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1493 transitions. [2023-12-19 01:31:47,042 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1493 transitions. Word has length 61 [2023-12-19 01:31:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:47,042 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1493 transitions. [2023-12-19 01:31:47,043 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) [2023-12-19 01:31:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1493 transitions. [2023-12-19 01:31:47,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:31:47,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:47,046 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] [2023-12-19 01:31:47,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:47,259 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 [2023-12-19 01:31:47,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:47,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash -246353664, now seen corresponding path program 1 times [2023-12-19 01:31:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368956631] [2023-12-19 01:31:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:31:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:31:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:31:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368956631] [2023-12-19 01:31:47,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368956631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:47,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:47,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:31:47,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637552622] [2023-12-19 01:31:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:47,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:31:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:31:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:31:47,328 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) [2023-12-19 01:31:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:47,718 INFO L93 Difference]: Finished difference Result 1710 states and 2316 transitions. [2023-12-19 01:31:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:31:47,719 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 [2023-12-19 01:31:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:47,724 INFO L225 Difference]: With dead ends: 1710 [2023-12-19 01:31:47,724 INFO L226 Difference]: Without dead ends: 1045 [2023-12-19 01:31:47,726 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 [2023-12-19 01:31:47,726 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 [2023-12-19 01:31:47,727 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] [2023-12-19 01:31:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-19 01:31:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 968. [2023-12-19 01:31:47,768 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) [2023-12-19 01:31:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1347 transitions. [2023-12-19 01:31:47,773 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1347 transitions. Word has length 78 [2023-12-19 01:31:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1347 transitions. [2023-12-19 01:31:47,774 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) [2023-12-19 01:31:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1347 transitions. [2023-12-19 01:31:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:31:47,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:47,777 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] [2023-12-19 01:31:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:31:47,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1354601071, now seen corresponding path program 1 times [2023-12-19 01:31:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666478952] [2023-12-19 01:31:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:31:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:31:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:31:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:31:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:31:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:31:47,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666478952] [2023-12-19 01:31:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666478952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325737784] [2023-12-19 01:31:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:47,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:47,853 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) [2023-12-19 01:31:47,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:31:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:47,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:48,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:31:48,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325737784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:48,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:48,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:31:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549340473] [2023-12-19 01:31:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:48,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:31:48,039 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) [2023-12-19 01:31:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:48,125 INFO L93 Difference]: Finished difference Result 1193 states and 1635 transitions. [2023-12-19 01:31:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:48,126 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 [2023-12-19 01:31:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:48,128 INFO L225 Difference]: With dead ends: 1193 [2023-12-19 01:31:48,128 INFO L226 Difference]: Without dead ends: 301 [2023-12-19 01:31:48,130 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 [2023-12-19 01:31:48,130 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 [2023-12-19 01:31:48,130 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] [2023-12-19 01:31:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-19 01:31:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-19 01:31:48,143 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) [2023-12-19 01:31:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 487 transitions. [2023-12-19 01:31:48,145 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 487 transitions. Word has length 92 [2023-12-19 01:31:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:48,146 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 487 transitions. [2023-12-19 01:31:48,146 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) [2023-12-19 01:31:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 487 transitions. [2023-12-19 01:31:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:48,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:48,148 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] [2023-12-19 01:31:48,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:48,354 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 [2023-12-19 01:31:48,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:48,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:48,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1252646486, now seen corresponding path program 1 times [2023-12-19 01:31:48,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:48,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243647357] [2023-12-19 01:31:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243647357] [2023-12-19 01:31:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243647357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:31:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86588280] [2023-12-19 01:31:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:31:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:31:48,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:31:48,517 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) [2023-12-19 01:31:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:49,875 INFO L93 Difference]: Finished difference Result 706 states and 1162 transitions. [2023-12-19 01:31:49,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:31:49,876 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 [2023-12-19 01:31:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:49,879 INFO L225 Difference]: With dead ends: 706 [2023-12-19 01:31:49,879 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 01:31:49,880 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 [2023-12-19 01:31:49,881 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 834 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2023-12-19 01:31:49,881 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] [2023-12-19 01:31:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 01:31:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 301. [2023-12-19 01:31:49,903 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) [2023-12-19 01:31:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 486 transitions. [2023-12-19 01:31:49,905 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 486 transitions. Word has length 141 [2023-12-19 01:31:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:49,905 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 486 transitions. [2023-12-19 01:31:49,905 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) [2023-12-19 01:31:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 486 transitions. [2023-12-19 01:31:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:49,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:49,908 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] [2023-12-19 01:31:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:31:49,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:49,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1424880360, now seen corresponding path program 1 times [2023-12-19 01:31:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139276763] [2023-12-19 01:31:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139276763] [2023-12-19 01:31:50,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139276763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:50,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:50,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:31:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707069389] [2023-12-19 01:31:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:50,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:31:50,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:31:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:31:50,073 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) [2023-12-19 01:31:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:51,452 INFO L93 Difference]: Finished difference Result 698 states and 1145 transitions. [2023-12-19 01:31:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:31:51,453 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 [2023-12-19 01:31:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:51,455 INFO L225 Difference]: With dead ends: 698 [2023-12-19 01:31:51,455 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 01:31:51,456 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 [2023-12-19 01:31:51,457 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 825 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2023-12-19 01:31:51,457 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] [2023-12-19 01:31:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 01:31:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 301. [2023-12-19 01:31:51,475 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) [2023-12-19 01:31:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 485 transitions. [2023-12-19 01:31:51,477 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 485 transitions. Word has length 141 [2023-12-19 01:31:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:51,478 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 485 transitions. [2023-12-19 01:31:51,478 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) [2023-12-19 01:31:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 485 transitions. [2023-12-19 01:31:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:51,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:51,479 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] [2023-12-19 01:31:51,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:31:51,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:51,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash -995222054, now seen corresponding path program 1 times [2023-12-19 01:31:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:51,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992738646] [2023-12-19 01:31:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:51,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:51,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992738646] [2023-12-19 01:31:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992738646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:51,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:51,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:31:51,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559245638] [2023-12-19 01:31:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:31:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:51,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:31:51,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:31:51,732 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) [2023-12-19 01:31:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:54,140 INFO L93 Difference]: Finished difference Result 1104 states and 1823 transitions. [2023-12-19 01:31:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:31:54,141 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 [2023-12-19 01:31:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:54,144 INFO L225 Difference]: With dead ends: 1104 [2023-12-19 01:31:54,144 INFO L226 Difference]: Without dead ends: 820 [2023-12-19 01:31:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:31:54,146 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 [2023-12-19 01:31:54,146 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] [2023-12-19 01:31:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-19 01:31:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 601. [2023-12-19 01:31:54,179 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) [2023-12-19 01:31:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 976 transitions. [2023-12-19 01:31:54,181 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 976 transitions. Word has length 141 [2023-12-19 01:31:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:54,183 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 976 transitions. [2023-12-19 01:31:54,183 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) [2023-12-19 01:31:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 976 transitions. [2023-12-19 01:31:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:54,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:54,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:54,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:31:54,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:54,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -596030822, now seen corresponding path program 1 times [2023-12-19 01:31:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:54,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908045191] [2023-12-19 01:31:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908045191] [2023-12-19 01:31:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908045191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:54,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:54,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:31:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165410065] [2023-12-19 01:31:54,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:54,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:31:54,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:31:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:54,464 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) [2023-12-19 01:31:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:57,596 INFO L93 Difference]: Finished difference Result 1829 states and 3021 transitions. [2023-12-19 01:31:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:31:57,597 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 [2023-12-19 01:31:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:57,603 INFO L225 Difference]: With dead ends: 1829 [2023-12-19 01:31:57,603 INFO L226 Difference]: Without dead ends: 1245 [2023-12-19 01:31:57,605 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 [2023-12-19 01:31:57,606 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 [2023-12-19 01:31:57,606 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] [2023-12-19 01:31:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-19 01:31:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 878. [2023-12-19 01:31:57,652 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) [2023-12-19 01:31:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1420 transitions. [2023-12-19 01:31:57,655 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1420 transitions. Word has length 141 [2023-12-19 01:31:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:57,655 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1420 transitions. [2023-12-19 01:31:57,655 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) [2023-12-19 01:31:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1420 transitions. [2023-12-19 01:31:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:57,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:57,657 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] [2023-12-19 01:31:57,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:31:57,657 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:57,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash -107983716, now seen corresponding path program 1 times [2023-12-19 01:31:57,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113928236] [2023-12-19 01:31:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:57,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:57,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113928236] [2023-12-19 01:31:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113928236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:57,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:31:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402472600] [2023-12-19 01:31:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:57,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:31:57,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:31:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:57,865 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) [2023-12-19 01:31:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:59,260 INFO L93 Difference]: Finished difference Result 2120 states and 3499 transitions. [2023-12-19 01:31:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:31:59,261 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 [2023-12-19 01:31:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:59,267 INFO L225 Difference]: With dead ends: 2120 [2023-12-19 01:31:59,267 INFO L226 Difference]: Without dead ends: 1259 [2023-12-19 01:31:59,270 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 [2023-12-19 01:31:59,271 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 [2023-12-19 01:31:59,271 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] [2023-12-19 01:31:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-12-19 01:31:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 878. [2023-12-19 01:31:59,322 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) [2023-12-19 01:31:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1417 transitions. [2023-12-19 01:31:59,325 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1417 transitions. Word has length 141 [2023-12-19 01:31:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:59,325 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1417 transitions. [2023-12-19 01:31:59,325 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) [2023-12-19 01:31:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1417 transitions. [2023-12-19 01:31:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:31:59,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:59,327 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] [2023-12-19 01:31:59,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:31:59,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:59,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1390156002, now seen corresponding path program 1 times [2023-12-19 01:31:59,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:59,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578239486] [2023-12-19 01:31:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:59,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:31:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:31:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:31:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:31:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:31:59,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578239486] [2023-12-19 01:31:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578239486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:31:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:31:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569223736] [2023-12-19 01:31:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:31:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:31:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:59,540 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) [2023-12-19 01:32:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:00,858 INFO L93 Difference]: Finished difference Result 2116 states and 3482 transitions. [2023-12-19 01:32:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:32:00,860 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 [2023-12-19 01:32:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:00,866 INFO L225 Difference]: With dead ends: 2116 [2023-12-19 01:32:00,866 INFO L226 Difference]: Without dead ends: 1255 [2023-12-19 01:32:00,869 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 [2023-12-19 01:32:00,870 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, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:00,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 742 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:32:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-12-19 01:32:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 878. [2023-12-19 01:32:00,925 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) [2023-12-19 01:32:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1414 transitions. [2023-12-19 01:32:00,928 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1414 transitions. Word has length 141 [2023-12-19 01:32:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:00,928 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1414 transitions. [2023-12-19 01:32:00,928 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) [2023-12-19 01:32:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1414 transitions. [2023-12-19 01:32:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:00,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:00,930 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] [2023-12-19 01:32:00,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:32:00,930 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:00,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1062335580, now seen corresponding path program 1 times [2023-12-19 01:32:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702272072] [2023-12-19 01:32:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:00,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702272072] [2023-12-19 01:32:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702272072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343100456] [2023-12-19 01:32:01,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:01,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:01,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:01,170 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) [2023-12-19 01:32:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:02,572 INFO L93 Difference]: Finished difference Result 2112 states and 3465 transitions. [2023-12-19 01:32:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:32:02,572 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 [2023-12-19 01:32:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:02,577 INFO L225 Difference]: With dead ends: 2112 [2023-12-19 01:32:02,578 INFO L226 Difference]: Without dead ends: 1251 [2023-12-19 01:32:02,580 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 [2023-12-19 01:32:02,580 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1050 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:02,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 742 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:32:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-19 01:32:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 878. [2023-12-19 01:32:02,629 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) [2023-12-19 01:32:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1411 transitions. [2023-12-19 01:32:02,632 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1411 transitions. Word has length 141 [2023-12-19 01:32:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:02,632 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1411 transitions. [2023-12-19 01:32:02,632 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) [2023-12-19 01:32:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1411 transitions. [2023-12-19 01:32:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:02,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:02,633 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] [2023-12-19 01:32:02,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:32:02,634 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:02,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -659667106, now seen corresponding path program 1 times [2023-12-19 01:32:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806510182] [2023-12-19 01:32:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806510182] [2023-12-19 01:32:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806510182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975690639] [2023-12-19 01:32:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:02,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:02,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:02,871 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) [2023-12-19 01:32:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:06,112 INFO L93 Difference]: Finished difference Result 2878 states and 4699 transitions. [2023-12-19 01:32:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:32:06,113 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 [2023-12-19 01:32:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:06,123 INFO L225 Difference]: With dead ends: 2878 [2023-12-19 01:32:06,123 INFO L226 Difference]: Without dead ends: 2017 [2023-12-19 01:32:06,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:32:06,127 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1268 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:06,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1720 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:32:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-12-19 01:32:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1445. [2023-12-19 01:32:06,213 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) [2023-12-19 01:32:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2316 transitions. [2023-12-19 01:32:06,216 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2316 transitions. Word has length 141 [2023-12-19 01:32:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2316 transitions. [2023-12-19 01:32:06,217 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) [2023-12-19 01:32:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2316 transitions. [2023-12-19 01:32:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:06,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:06,219 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] [2023-12-19 01:32:06,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:32:06,220 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:06,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -992310244, now seen corresponding path program 1 times [2023-12-19 01:32:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452886881] [2023-12-19 01:32:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452886881] [2023-12-19 01:32:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452886881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509474241] [2023-12-19 01:32:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:06,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:06,436 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) [2023-12-19 01:32:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:08,034 INFO L93 Difference]: Finished difference Result 3432 states and 5592 transitions. [2023-12-19 01:32:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:32:08,035 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 [2023-12-19 01:32:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:08,043 INFO L225 Difference]: With dead ends: 3432 [2023-12-19 01:32:08,043 INFO L226 Difference]: Without dead ends: 2004 [2023-12-19 01:32:08,048 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 [2023-12-19 01:32:08,049 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 919 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 [2023-12-19 01:32:08,049 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] [2023-12-19 01:32:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-12-19 01:32:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1445. [2023-12-19 01:32:08,142 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) [2023-12-19 01:32:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2311 transitions. [2023-12-19 01:32:08,147 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2311 transitions. Word has length 141 [2023-12-19 01:32:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:08,147 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2311 transitions. [2023-12-19 01:32:08,147 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) [2023-12-19 01:32:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2311 transitions. [2023-12-19 01:32:08,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:08,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:08,149 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] [2023-12-19 01:32:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:32:08,149 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:08,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 936621982, now seen corresponding path program 1 times [2023-12-19 01:32:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115871039] [2023-12-19 01:32:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:08,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:08,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115871039] [2023-12-19 01:32:08,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115871039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:08,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:08,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848522787] [2023-12-19 01:32:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:08,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:08,365 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) [2023-12-19 01:32:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:11,384 INFO L93 Difference]: Finished difference Result 4915 states and 7968 transitions. [2023-12-19 01:32:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:32:11,388 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 [2023-12-19 01:32:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:11,403 INFO L225 Difference]: With dead ends: 4915 [2023-12-19 01:32:11,403 INFO L226 Difference]: Without dead ends: 3487 [2023-12-19 01:32:11,408 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 [2023-12-19 01:32:11,409 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1260 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:11,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1720 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:32:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2023-12-19 01:32:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2579. [2023-12-19 01:32:11,592 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) [2023-12-19 01:32:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4117 transitions. [2023-12-19 01:32:11,599 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4117 transitions. Word has length 141 [2023-12-19 01:32:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:11,600 INFO L495 AbstractCegarLoop]: Abstraction has 2579 states and 4117 transitions. [2023-12-19 01:32:11,600 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) [2023-12-19 01:32:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4117 transitions. [2023-12-19 01:32:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:11,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:11,603 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] [2023-12-19 01:32:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:32:11,603 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:11,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1356459044, now seen corresponding path program 1 times [2023-12-19 01:32:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:11,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794929632] [2023-12-19 01:32:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:11,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794929632] [2023-12-19 01:32:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794929632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317788913] [2023-12-19 01:32:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:11,825 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) [2023-12-19 01:32:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:14,840 INFO L93 Difference]: Finished difference Result 8995 states and 14560 transitions. [2023-12-19 01:32:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:32:14,842 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 [2023-12-19 01:32:14,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:14,878 INFO L225 Difference]: With dead ends: 8995 [2023-12-19 01:32:14,879 INFO L226 Difference]: Without dead ends: 6433 [2023-12-19 01:32:14,891 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 [2023-12-19 01:32:14,892 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 [2023-12-19 01:32:14,893 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] [2023-12-19 01:32:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2023-12-19 01:32:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 4852. [2023-12-19 01:32:15,232 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) [2023-12-19 01:32:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7753 transitions. [2023-12-19 01:32:15,248 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7753 transitions. Word has length 141 [2023-12-19 01:32:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:15,249 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 7753 transitions. [2023-12-19 01:32:15,249 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) [2023-12-19 01:32:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7753 transitions. [2023-12-19 01:32:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:15,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:15,254 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] [2023-12-19 01:32:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:32:15,254 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:15,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash 370685918, now seen corresponding path program 1 times [2023-12-19 01:32:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633598214] [2023-12-19 01:32:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633598214] [2023-12-19 01:32:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633598214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927812638] [2023-12-19 01:32:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:15,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:15,462 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) [2023-12-19 01:32:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:19,109 INFO L93 Difference]: Finished difference Result 19184 states and 31080 transitions. [2023-12-19 01:32:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:32:19,110 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 [2023-12-19 01:32:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:19,166 INFO L225 Difference]: With dead ends: 19184 [2023-12-19 01:32:19,166 INFO L226 Difference]: Without dead ends: 14349 [2023-12-19 01:32:19,186 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 [2023-12-19 01:32:19,187 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1352 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 [2023-12-19 01:32:19,187 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] [2023-12-19 01:32:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14349 states. [2023-12-19 01:32:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14349 to 9398. [2023-12-19 01:32:19,847 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) [2023-12-19 01:32:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 15087 transitions. [2023-12-19 01:32:19,879 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 15087 transitions. Word has length 141 [2023-12-19 01:32:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:19,879 INFO L495 AbstractCegarLoop]: Abstraction has 9398 states and 15087 transitions. [2023-12-19 01:32:19,880 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) [2023-12-19 01:32:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 15087 transitions. [2023-12-19 01:32:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:19,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:19,888 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] [2023-12-19 01:32:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:32:19,888 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:19,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1276677024, now seen corresponding path program 1 times [2023-12-19 01:32:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371879824] [2023-12-19 01:32:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:20,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:20,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371879824] [2023-12-19 01:32:20,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371879824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:20,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:20,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:20,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56175321] [2023-12-19 01:32:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:20,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:20,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:20,144 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) [2023-12-19 01:32:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:23,735 INFO L93 Difference]: Finished difference Result 37104 states and 60352 transitions. [2023-12-19 01:32:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:32:23,736 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 [2023-12-19 01:32:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:23,859 INFO L225 Difference]: With dead ends: 37104 [2023-12-19 01:32:23,860 INFO L226 Difference]: Without dead ends: 27723 [2023-12-19 01:32:23,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:32:23,908 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 [2023-12-19 01:32:23,908 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] [2023-12-19 01:32:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27723 states. [2023-12-19 01:32:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27723 to 18327. [2023-12-19 01:32:25,139 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) [2023-12-19 01:32:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18327 states to 18327 states and 29655 transitions. [2023-12-19 01:32:25,201 INFO L78 Accepts]: Start accepts. Automaton has 18327 states and 29655 transitions. Word has length 141 [2023-12-19 01:32:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:25,202 INFO L495 AbstractCegarLoop]: Abstraction has 18327 states and 29655 transitions. [2023-12-19 01:32:25,202 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) [2023-12-19 01:32:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18327 states and 29655 transitions. [2023-12-19 01:32:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:25,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:25,215 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] [2023-12-19 01:32:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:32:25,215 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:25,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash 886939550, now seen corresponding path program 1 times [2023-12-19 01:32:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513301055] [2023-12-19 01:32:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:25,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:25,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513301055] [2023-12-19 01:32:25,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513301055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:25,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:25,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:25,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404810619] [2023-12-19 01:32:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:25,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:25,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:25,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:25,451 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) [2023-12-19 01:32:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:30,147 INFO L93 Difference]: Finished difference Result 72015 states and 117942 transitions. [2023-12-19 01:32:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:32:30,147 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 [2023-12-19 01:32:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:30,385 INFO L225 Difference]: With dead ends: 72015 [2023-12-19 01:32:30,385 INFO L226 Difference]: Without dead ends: 53705 [2023-12-19 01:32:30,451 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 [2023-12-19 01:32:30,452 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1552 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:30,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1713 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:32:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53705 states. [2023-12-19 01:32:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53705 to 36344. [2023-12-19 01:32:32,687 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) [2023-12-19 01:32:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36344 states to 36344 states and 59531 transitions. [2023-12-19 01:32:32,838 INFO L78 Accepts]: Start accepts. Automaton has 36344 states and 59531 transitions. Word has length 141 [2023-12-19 01:32:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:32,838 INFO L495 AbstractCegarLoop]: Abstraction has 36344 states and 59531 transitions. [2023-12-19 01:32:32,839 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) [2023-12-19 01:32:32,839 INFO L276 IsEmpty]: Start isEmpty. Operand 36344 states and 59531 transitions. [2023-12-19 01:32:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:32,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:32,859 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] [2023-12-19 01:32:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:32:32,859 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:32,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash -151645024, now seen corresponding path program 1 times [2023-12-19 01:32:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175218983] [2023-12-19 01:32:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175218983] [2023-12-19 01:32:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175218983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727836960] [2023-12-19 01:32:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:33,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:33,293 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) [2023-12-19 01:32:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:39,538 INFO L93 Difference]: Finished difference Result 141294 states and 234108 transitions. [2023-12-19 01:32:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:32:39,538 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 [2023-12-19 01:32:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:39,982 INFO L225 Difference]: With dead ends: 141294 [2023-12-19 01:32:39,982 INFO L226 Difference]: Without dead ends: 104967 [2023-12-19 01:32:40,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:32:40,079 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1322 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:40,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1713 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:32:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104967 states. [2023-12-19 01:32:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104967 to 72377. [2023-12-19 01:32:44,307 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) [2023-12-19 01:32:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72377 states to 72377 states and 120739 transitions. [2023-12-19 01:32:44,658 INFO L78 Accepts]: Start accepts. Automaton has 72377 states and 120739 transitions. Word has length 141 [2023-12-19 01:32:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:32:44,658 INFO L495 AbstractCegarLoop]: Abstraction has 72377 states and 120739 transitions. [2023-12-19 01:32:44,658 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) [2023-12-19 01:32:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 72377 states and 120739 transitions. [2023-12-19 01:32:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:32:44,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:32:44,708 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] [2023-12-19 01:32:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:32:44,709 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:32:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:32:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2124810402, now seen corresponding path program 1 times [2023-12-19 01:32:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:32:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560672006] [2023-12-19 01:32:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:32:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:32:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:32:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:32:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:32:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:32:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:32:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:32:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:32:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:32:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560672006] [2023-12-19 01:32:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560672006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:32:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:32:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:32:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980324805] [2023-12-19 01:32:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:32:45,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:32:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:32:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:32:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:32:45,233 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) [2023-12-19 01:32:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:32:54,590 INFO L93 Difference]: Finished difference Result 277933 states and 468946 transitions. [2023-12-19 01:32:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:32:54,591 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 [2023-12-19 01:32:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:32:55,685 INFO L225 Difference]: With dead ends: 277933 [2023-12-19 01:32:55,685 INFO L226 Difference]: Without dead ends: 205573 [2023-12-19 01:32:55,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:32:55,844 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1480 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:32:55,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1713 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:32:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205573 states. [2023-12-19 01:33:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205573 to 144442. [2023-12-19 01:33:03,684 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) [2023-12-19 01:33:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144442 states to 144442 states and 247527 transitions. [2023-12-19 01:33:04,509 INFO L78 Accepts]: Start accepts. Automaton has 144442 states and 247527 transitions. Word has length 141 [2023-12-19 01:33:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:04,509 INFO L495 AbstractCegarLoop]: Abstraction has 144442 states and 247527 transitions. [2023-12-19 01:33:04,510 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) [2023-12-19 01:33:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 144442 states and 247527 transitions. [2023-12-19 01:33:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:33:04,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:04,855 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] [2023-12-19 01:33:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:33:04,855 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:04,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 28296416, now seen corresponding path program 1 times [2023-12-19 01:33:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25527766] [2023-12-19 01:33:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:33:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:33:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:33:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:05,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:05,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25527766] [2023-12-19 01:33:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25527766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:05,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:05,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394463436] [2023-12-19 01:33:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:05,056 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) [2023-12-19 01:33:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:13,583 INFO L93 Difference]: Finished difference Result 329996 states and 582335 transitions. [2023-12-19 01:33:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:33:13,584 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 [2023-12-19 01:33:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:14,504 INFO L225 Difference]: With dead ends: 329996 [2023-12-19 01:33:14,504 INFO L226 Difference]: Without dead ends: 185571 [2023-12-19 01:33:14,793 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 [2023-12-19 01:33:14,793 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 [2023-12-19 01:33:14,794 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] [2023-12-19 01:33:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185571 states. [2023-12-19 01:33:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185571 to 144442. [2023-12-19 01:33:22,677 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) [2023-12-19 01:33:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144442 states to 144442 states and 247014 transitions. [2023-12-19 01:33:23,592 INFO L78 Accepts]: Start accepts. Automaton has 144442 states and 247014 transitions. Word has length 141 [2023-12-19 01:33:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:33:23,592 INFO L495 AbstractCegarLoop]: Abstraction has 144442 states and 247014 transitions. [2023-12-19 01:33:23,593 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) [2023-12-19 01:33:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 144442 states and 247014 transitions. [2023-12-19 01:33:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:33:23,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:33:23,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:33:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:33:23,665 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:33:23,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:33:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash -594985186, now seen corresponding path program 1 times [2023-12-19 01:33:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:33:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559515456] [2023-12-19 01:33:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:33:23,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:33:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:33:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:33:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:33:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:33:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:33:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:33:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:33:23,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:33:23,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559515456] [2023-12-19 01:33:23,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559515456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:33:23,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:33:23,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:33:23,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120071719] [2023-12-19 01:33:23,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:33:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:33:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:33:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:33:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:33:23,873 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) [2023-12-19 01:33:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:33:39,915 INFO L93 Difference]: Finished difference Result 540714 states and 936656 transitions. [2023-12-19 01:33:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:33:39,915 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 [2023-12-19 01:33:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:33:41,821 INFO L225 Difference]: With dead ends: 540714 [2023-12-19 01:33:41,821 INFO L226 Difference]: Without dead ends: 396289 [2023-12-19 01:33:42,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:33:42,404 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1408 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:33:42,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1713 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:33:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396289 states. [2023-12-19 01:33:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396289 to 289084. [2023-12-19 01:33:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289084 states, 265501 states have (on average 1.5850147457071724) internal successors, (420823), 266526 states have internal predecessors, (420823), 16408 states have call successors, (16408), 6150 states have call predecessors, (16408), 7174 states have return successors, (76481), 17431 states have call predecessors, (76481), 16408 states have call successors, (76481) [2023-12-19 01:34:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289084 states to 289084 states and 513712 transitions. [2023-12-19 01:34:00,521 INFO L78 Accepts]: Start accepts. Automaton has 289084 states and 513712 transitions. Word has length 141 [2023-12-19 01:34:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:34:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 289084 states and 513712 transitions. [2023-12-19 01:34:00,521 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) [2023-12-19 01:34:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 289084 states and 513712 transitions. [2023-12-19 01:34:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 01:34:00,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:34:00,699 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] [2023-12-19 01:34:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:34:00,700 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:34:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:34:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -476543712, now seen corresponding path program 1 times [2023-12-19 01:34:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:34:00,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506382995] [2023-12-19 01:34:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:34:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:34:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:34:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:34:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:34:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:34:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:34:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:34:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:34:00,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:34:00,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506382995] [2023-12-19 01:34:00,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506382995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:34:00,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:34:00,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:34:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48777969] [2023-12-19 01:34:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:34:00,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:34:00,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:34:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:34:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:34:00,901 INFO L87 Difference]: Start difference. First operand 289084 states and 513712 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)