/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/transmitter.09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:21:46,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:21:46,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:21:46,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:21:46,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:21:46,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:21:46,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:21:46,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:21:46,798 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:21:46,802 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:21:46,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:21:46,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:21:46,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:21:46,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:21:46,804 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:21:46,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:21:46,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:21:46,804 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:21:46,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:21:46,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:21:46,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:21:46,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:21:46,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:21:46,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:21:46,806 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:21:46,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:21:46,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:21:46,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:21:46,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:21:46,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:21:46,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:21:46,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:21:46,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:21:46,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:21:46,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:21:46,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:21:46,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:21:46,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:21:46,810 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:21:47,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:21:47,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:21:47,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:21:47,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:21:47,061 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:21:47,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.09.cil.c [2023-12-21 11:21:48,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:21:48,940 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:21:48,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.09.cil.c [2023-12-21 11:21:48,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5abec2a/553441cb872b4360b530e43b0983be46/FLAG22849be4d [2023-12-21 11:21:48,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5abec2a/553441cb872b4360b530e43b0983be46 [2023-12-21 11:21:48,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:21:48,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:21:48,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:21:48,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:21:48,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:21:48,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:21:48" (1/1) ... [2023-12-21 11:21:48,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6221c1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:48, skipping insertion in model container [2023-12-21 11:21:48,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:21:48" (1/1) ... [2023-12-21 11:21:49,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:21:49,151 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.09.cil.c[706,719] [2023-12-21 11:21:49,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:21:49,275 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:21:49,285 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.09.cil.c[706,719] [2023-12-21 11:21:49,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:21:49,378 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:21:49,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49 WrapperNode [2023-12-21 11:21:49,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:21:49,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:21:49,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:21:49,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:21:49,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,445 INFO L138 Inliner]: procedures = 46, calls = 57, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 682 [2023-12-21 11:21:49,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:21:49,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:21:49,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:21:49,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:21:49,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,494 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]. [2023-12-21 11:21:49,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:21:49,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:21:49,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:21:49,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:21:49,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (1/1) ... [2023-12-21 11:21:49,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:21:49,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:21:49,570 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) [2023-12-21 11:21:49,595 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 [2023-12-21 11:21:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:21:49,604 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:21:49,604 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:21:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:21:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:21:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:21:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:21:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:21:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:21:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:21:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:21:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:21:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:21:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:21:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:21:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:21:49,752 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:21:49,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:21:50,336 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:21:50,393 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:21:50,393 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-21 11:21:50,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:21:50 BoogieIcfgContainer [2023-12-21 11:21:50,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:21:50,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:21:50,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:21:50,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:21:50,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:21:48" (1/3) ... [2023-12-21 11:21:50,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458d130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:21:50, skipping insertion in model container [2023-12-21 11:21:50,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:21:49" (2/3) ... [2023-12-21 11:21:50,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458d130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:21:50, skipping insertion in model container [2023-12-21 11:21:50,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:21:50" (3/3) ... [2023-12-21 11:21:50,404 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.09.cil.c [2023-12-21 11:21:50,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:21:50,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:21:50,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:21:50,474 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;@7a289467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:21:50,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:21:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 244 states have (on average 1.7295081967213115) internal successors, (422), 246 states have internal predecessors, (422), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 11:21:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:21:50,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:50,493 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] [2023-12-21 11:21:50,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:50,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1125709268, now seen corresponding path program 1 times [2023-12-21 11:21:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126699434] [2023-12-21 11:21:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:50,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:21:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:21:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:21:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:21:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:21:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126699434] [2023-12-21 11:21:51,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126699434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:51,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:51,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:21:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957338949] [2023-12-21 11:21:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:21:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:21:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:21:51,106 INFO L87 Difference]: Start difference. First operand has 274 states, 244 states have (on average 1.7295081967213115) internal successors, (422), 246 states have internal predecessors, (422), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-12-21 11:21:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:52,702 INFO L93 Difference]: Finished difference Result 642 states and 1100 transitions. [2023-12-21 11:21:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:21:52,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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 136 [2023-12-21 11:21:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:52,716 INFO L225 Difference]: With dead ends: 642 [2023-12-21 11:21:52,716 INFO L226 Difference]: Without dead ends: 370 [2023-12-21 11:21:52,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:21:52,724 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 751 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:52,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 488 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:21:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-21 11:21:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 272. [2023-12-21 11:21:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 1.6131687242798354) internal successors, (392), 244 states have internal predecessors, (392), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 11:21:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 436 transitions. [2023-12-21 11:21:52,783 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 436 transitions. Word has length 136 [2023-12-21 11:21:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 436 transitions. [2023-12-21 11:21:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-12-21 11:21:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 436 transitions. [2023-12-21 11:21:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:21:52,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:52,787 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] [2023-12-21 11:21:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:21:52,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:52,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1670581842, now seen corresponding path program 1 times [2023-12-21 11:21:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:52,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012477207] [2023-12-21 11:21:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:21:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:21:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:21:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:21:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:21:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:52,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012477207] [2023-12-21 11:21:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012477207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:52,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:21:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143446448] [2023-12-21 11:21:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:21:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:21:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:21:52,966 INFO L87 Difference]: Start difference. First operand 272 states and 436 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-12-21 11:21:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:54,099 INFO L93 Difference]: Finished difference Result 630 states and 1025 transitions. [2023-12-21 11:21:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:21:54,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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 136 [2023-12-21 11:21:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:54,103 INFO L225 Difference]: With dead ends: 630 [2023-12-21 11:21:54,103 INFO L226 Difference]: Without dead ends: 370 [2023-12-21 11:21:54,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:21:54,106 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 740 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:54,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 483 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:21:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-21 11:21:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 272. [2023-12-21 11:21:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 1.6090534979423867) internal successors, (391), 244 states have internal predecessors, (391), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 11:21:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 435 transitions. [2023-12-21 11:21:54,132 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 435 transitions. Word has length 136 [2023-12-21 11:21:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:54,132 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 435 transitions. [2023-12-21 11:21:54,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-12-21 11:21:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 435 transitions. [2023-12-21 11:21:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:21:54,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:54,135 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] [2023-12-21 11:21:54,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:21:54,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:54,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 808748240, now seen corresponding path program 1 times [2023-12-21 11:21:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658474784] [2023-12-21 11:21:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:21:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:21:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:21:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:21:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:21:54,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:54,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658474784] [2023-12-21 11:21:54,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658474784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:54,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:21:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662204256] [2023-12-21 11:21:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:54,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:21:54,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:21:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:21:54,373 INFO L87 Difference]: Start difference. First operand 272 states and 435 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 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) [2023-12-21 11:21:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:21:56,634 INFO L93 Difference]: Finished difference Result 994 states and 1639 transitions. [2023-12-21 11:21:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:21:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 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 136 [2023-12-21 11:21:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:21:56,641 INFO L225 Difference]: With dead ends: 994 [2023-12-21 11:21:56,641 INFO L226 Difference]: Without dead ends: 737 [2023-12-21 11:21:56,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:21:56,647 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1122 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:21:56,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 927 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 11:21:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-21 11:21:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 542. [2023-12-21 11:21:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 489 states have (on average 1.6175869120654396) internal successors, (791), 491 states have internal predecessors, (791), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-21 11:21:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 872 transitions. [2023-12-21 11:21:56,707 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 872 transitions. Word has length 136 [2023-12-21 11:21:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:21:56,709 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 872 transitions. [2023-12-21 11:21:56,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 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) [2023-12-21 11:21:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 872 transitions. [2023-12-21 11:21:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:21:56,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:21:56,712 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] [2023-12-21 11:21:56,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:21:56,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:21:56,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:21:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2127751855, now seen corresponding path program 1 times [2023-12-21 11:21:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:21:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437998457] [2023-12-21 11:21:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:21:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:21:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:21:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:21:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:21:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:21:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:21:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:21:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:21:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:21:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437998457] [2023-12-21 11:21:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437998457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:21:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:21:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:21:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127037479] [2023-12-21 11:21:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:21:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:21:57,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:21:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:21:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:21:57,023 INFO L87 Difference]: Start difference. First operand 542 states and 872 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:00,224 INFO L93 Difference]: Finished difference Result 1762 states and 2880 transitions. [2023-12-21 11:22:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:22:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:00,232 INFO L225 Difference]: With dead ends: 1762 [2023-12-21 11:22:00,232 INFO L226 Difference]: Without dead ends: 1235 [2023-12-21 11:22:00,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:22:00,235 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1227 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:00,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1563 Invalid, 3595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 11:22:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-12-21 11:22:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 792. [2023-12-21 11:22:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 715 states have (on average 1.6097902097902097) internal successors, (1151), 718 states have internal predecessors, (1151), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-21 11:22:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1268 transitions. [2023-12-21 11:22:00,285 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1268 transitions. Word has length 136 [2023-12-21 11:22:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:00,285 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1268 transitions. [2023-12-21 11:22:00,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1268 transitions. [2023-12-21 11:22:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:00,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:00,288 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] [2023-12-21 11:22:00,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:22:00,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:00,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash 285276141, now seen corresponding path program 1 times [2023-12-21 11:22:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:00,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519739706] [2023-12-21 11:22:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519739706] [2023-12-21 11:22:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519739706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:00,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:00,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:00,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987665129] [2023-12-21 11:22:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:00,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:00,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:00,546 INFO L87 Difference]: Start difference. First operand 792 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:03,828 INFO L93 Difference]: Finished difference Result 2716 states and 4428 transitions. [2023-12-21 11:22:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:22:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:03,838 INFO L225 Difference]: With dead ends: 2716 [2023-12-21 11:22:03,839 INFO L226 Difference]: Without dead ends: 1939 [2023-12-21 11:22:03,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:22:03,843 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1225 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3536 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:03,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1561 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3536 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 11:22:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2023-12-21 11:22:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1293. [2023-12-21 11:22:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1168 states have (on average 1.6027397260273972) internal successors, (1872), 1173 states have internal predecessors, (1872), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:22:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2065 transitions. [2023-12-21 11:22:03,922 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2065 transitions. Word has length 136 [2023-12-21 11:22:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:03,923 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 2065 transitions. [2023-12-21 11:22:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2065 transitions. [2023-12-21 11:22:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:03,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:03,926 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] [2023-12-21 11:22:03,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:22:03,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:03,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1436726545, now seen corresponding path program 1 times [2023-12-21 11:22:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999988083] [2023-12-21 11:22:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:04,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:04,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999988083] [2023-12-21 11:22:04,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999988083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:04,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:04,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9399306] [2023-12-21 11:22:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:04,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:04,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:04,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:04,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:04,159 INFO L87 Difference]: Start difference. First operand 1293 states and 2065 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:05,446 INFO L93 Difference]: Finished difference Result 3089 states and 5025 transitions. [2023-12-21 11:22:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:05,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:05,457 INFO L225 Difference]: With dead ends: 3089 [2023-12-21 11:22:05,457 INFO L226 Difference]: Without dead ends: 1811 [2023-12-21 11:22:05,461 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 [2023-12-21 11:22:05,463 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 943 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:05,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 662 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:22:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2023-12-21 11:22:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1293. [2023-12-21 11:22:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1168 states have (on average 1.5984589041095891) internal successors, (1867), 1173 states have internal predecessors, (1867), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:22:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2060 transitions. [2023-12-21 11:22:05,549 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2060 transitions. Word has length 136 [2023-12-21 11:22:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:05,549 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 2060 transitions. [2023-12-21 11:22:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2060 transitions. [2023-12-21 11:22:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:05,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:05,552 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] [2023-12-21 11:22:05,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:22:05,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:05,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1769369683, now seen corresponding path program 1 times [2023-12-21 11:22:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:05,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819027547] [2023-12-21 11:22:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:05,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819027547] [2023-12-21 11:22:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819027547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:05,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:05,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381846449] [2023-12-21 11:22:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:05,764 INFO L87 Difference]: Start difference. First operand 1293 states and 2060 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:06,976 INFO L93 Difference]: Finished difference Result 3083 states and 4999 transitions. [2023-12-21 11:22:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:06,985 INFO L225 Difference]: With dead ends: 3083 [2023-12-21 11:22:06,985 INFO L226 Difference]: Without dead ends: 1805 [2023-12-21 11:22:06,989 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 [2023-12-21 11:22:06,991 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 947 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:06,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 662 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:22:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2023-12-21 11:22:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1293. [2023-12-21 11:22:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1168 states have (on average 1.5941780821917808) internal successors, (1862), 1173 states have internal predecessors, (1862), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-21 11:22:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2055 transitions. [2023-12-21 11:22:07,064 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2055 transitions. Word has length 136 [2023-12-21 11:22:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:07,065 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 2055 transitions. [2023-12-21 11:22:07,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2055 transitions. [2023-12-21 11:22:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:07,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:07,068 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] [2023-12-21 11:22:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:22:07,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 159562543, now seen corresponding path program 1 times [2023-12-21 11:22:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8309145] [2023-12-21 11:22:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:07,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8309145] [2023-12-21 11:22:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8309145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:07,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:07,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221085861] [2023-12-21 11:22:07,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:07,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:07,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:07,282 INFO L87 Difference]: Start difference. First operand 1293 states and 2055 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:10,175 INFO L93 Difference]: Finished difference Result 4528 states and 7305 transitions. [2023-12-21 11:22:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:22:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:10,188 INFO L225 Difference]: With dead ends: 4528 [2023-12-21 11:22:10,188 INFO L226 Difference]: Without dead ends: 3250 [2023-12-21 11:22:10,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:22:10,192 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1211 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 3512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1561 Invalid, 3512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 11:22:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2023-12-21 11:22:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2309. [2023-12-21 11:22:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2088 states have (on average 1.5881226053639848) internal successors, (3316), 2097 states have internal predecessors, (3316), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-21 11:22:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3667 transitions. [2023-12-21 11:22:10,301 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3667 transitions. Word has length 136 [2023-12-21 11:22:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:10,301 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3667 transitions. [2023-12-21 11:22:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3667 transitions. [2023-12-21 11:22:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:10,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:10,305 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] [2023-12-21 11:22:10,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:22:10,305 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:10,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1886707505, now seen corresponding path program 1 times [2023-12-21 11:22:10,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:10,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131220905] [2023-12-21 11:22:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131220905] [2023-12-21 11:22:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131220905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212821015] [2023-12-21 11:22:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:10,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:10,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:10,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:10,501 INFO L87 Difference]: Start difference. First operand 2309 states and 3667 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:11,723 INFO L93 Difference]: Finished difference Result 5437 states and 8771 transitions. [2023-12-21 11:22:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:11,738 INFO L225 Difference]: With dead ends: 5437 [2023-12-21 11:22:11,738 INFO L226 Difference]: Without dead ends: 3143 [2023-12-21 11:22:11,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:22:11,746 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 871 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:11,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 788 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:22:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2023-12-21 11:22:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2309. [2023-12-21 11:22:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2088 states have (on average 1.5838122605363985) internal successors, (3307), 2097 states have internal predecessors, (3307), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-21 11:22:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3658 transitions. [2023-12-21 11:22:11,865 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3658 transitions. Word has length 136 [2023-12-21 11:22:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3658 transitions. [2023-12-21 11:22:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3658 transitions. [2023-12-21 11:22:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:11,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:11,870 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] [2023-12-21 11:22:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:22:11,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1936903441, now seen corresponding path program 1 times [2023-12-21 11:22:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299514048] [2023-12-21 11:22:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299514048] [2023-12-21 11:22:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299514048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489995572] [2023-12-21 11:22:12,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:12,064 INFO L87 Difference]: Start difference. First operand 2309 states and 3658 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:15,187 INFO L93 Difference]: Finished difference Result 8180 states and 13131 transitions. [2023-12-21 11:22:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:22:15,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:15,209 INFO L225 Difference]: With dead ends: 8180 [2023-12-21 11:22:15,209 INFO L226 Difference]: Without dead ends: 5886 [2023-12-21 11:22:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:22:15,215 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1203 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 3474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:15,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1561 Invalid, 3474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 11:22:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2023-12-21 11:22:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4351. [2023-12-21 11:22:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4351 states, 3938 states have (on average 1.5782122905027933) internal successors, (6215), 3955 states have internal predecessors, (6215), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-21 11:22:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 6900 transitions. [2023-12-21 11:22:15,427 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 6900 transitions. Word has length 136 [2023-12-21 11:22:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:15,429 INFO L495 AbstractCegarLoop]: Abstraction has 4351 states and 6900 transitions. [2023-12-21 11:22:15,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 6900 transitions. [2023-12-21 11:22:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:15,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:15,436 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] [2023-12-21 11:22:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:22:15,436 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 710700913, now seen corresponding path program 1 times [2023-12-21 11:22:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:15,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726931015] [2023-12-21 11:22:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:15,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726931015] [2023-12-21 11:22:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726931015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:15,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583202913] [2023-12-21 11:22:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:15,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:15,662 INFO L87 Difference]: Start difference. First operand 4351 states and 6900 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:18,920 INFO L93 Difference]: Finished difference Result 15500 states and 24915 transitions. [2023-12-21 11:22:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:22:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:18,970 INFO L225 Difference]: With dead ends: 15500 [2023-12-21 11:22:18,970 INFO L226 Difference]: Without dead ends: 11164 [2023-12-21 11:22:18,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:22:18,987 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1202 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:18,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1561 Invalid, 3461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3404 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 11:22:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2023-12-21 11:22:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 8448. [2023-12-21 11:22:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8448 states, 7651 states have (on average 1.5748268200235263) internal successors, (12049), 7684 states have internal predecessors, (12049), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2023-12-21 11:22:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8448 states to 8448 states and 13456 transitions. [2023-12-21 11:22:19,532 INFO L78 Accepts]: Start accepts. Automaton has 8448 states and 13456 transitions. Word has length 136 [2023-12-21 11:22:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:19,533 INFO L495 AbstractCegarLoop]: Abstraction has 8448 states and 13456 transitions. [2023-12-21 11:22:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8448 states and 13456 transitions. [2023-12-21 11:22:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:19,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:19,549 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] [2023-12-21 11:22:19,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:22:19,550 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:19,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1420649809, now seen corresponding path program 1 times [2023-12-21 11:22:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561118303] [2023-12-21 11:22:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:19,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561118303] [2023-12-21 11:22:19,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561118303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:19,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:19,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204221226] [2023-12-21 11:22:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:19,741 INFO L87 Difference]: Start difference. First operand 8448 states and 13456 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:23,382 INFO L93 Difference]: Finished difference Result 33531 states and 54115 transitions. [2023-12-21 11:22:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:23,487 INFO L225 Difference]: With dead ends: 33531 [2023-12-21 11:22:23,487 INFO L226 Difference]: Without dead ends: 25098 [2023-12-21 11:22:23,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:23,535 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1275 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:23,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1536 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 11:22:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25098 states. [2023-12-21 11:22:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25098 to 16577. [2023-12-21 11:22:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16577 states, 15044 states have (on average 1.5753124169103963) internal successors, (23699), 15109 states have internal predecessors, (23699), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2023-12-21 11:22:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16577 states to 16577 states and 26648 transitions. [2023-12-21 11:22:24,515 INFO L78 Accepts]: Start accepts. Automaton has 16577 states and 26648 transitions. Word has length 136 [2023-12-21 11:22:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:24,515 INFO L495 AbstractCegarLoop]: Abstraction has 16577 states and 26648 transitions. [2023-12-21 11:22:24,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 16577 states and 26648 transitions. [2023-12-21 11:22:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:24,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:24,539 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] [2023-12-21 11:22:24,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:22:24,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:24,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:24,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1835732913, now seen corresponding path program 1 times [2023-12-21 11:22:24,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:24,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156184465] [2023-12-21 11:22:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:24,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156184465] [2023-12-21 11:22:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156184465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:24,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639513548] [2023-12-21 11:22:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:24,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:24,723 INFO L87 Difference]: Start difference. First operand 16577 states and 26648 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:26,383 INFO L93 Difference]: Finished difference Result 38277 states and 62602 transitions. [2023-12-21 11:22:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:26,475 INFO L225 Difference]: With dead ends: 38277 [2023-12-21 11:22:26,475 INFO L226 Difference]: Without dead ends: 21715 [2023-12-21 11:22:26,628 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 [2023-12-21 11:22:26,629 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 943 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:26,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 661 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:22:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21715 states. [2023-12-21 11:22:27,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21715 to 16577. [2023-12-21 11:22:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16577 states, 15044 states have (on average 1.5709917575113002) internal successors, (23634), 15109 states have internal predecessors, (23634), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2023-12-21 11:22:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16577 states to 16577 states and 26583 transitions. [2023-12-21 11:22:27,452 INFO L78 Accepts]: Start accepts. Automaton has 16577 states and 26583 transitions. Word has length 136 [2023-12-21 11:22:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:27,453 INFO L495 AbstractCegarLoop]: Abstraction has 16577 states and 26583 transitions. [2023-12-21 11:22:27,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:27,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16577 states and 26583 transitions. [2023-12-21 11:22:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:27,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:27,474 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] [2023-12-21 11:22:27,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:22:27,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:27,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:27,475 INFO L85 PathProgramCache]: Analyzing trace with hash -137432465, now seen corresponding path program 1 times [2023-12-21 11:22:27,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:27,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885430915] [2023-12-21 11:22:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:27,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885430915] [2023-12-21 11:22:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885430915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:27,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10896193] [2023-12-21 11:22:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:27,656 INFO L87 Difference]: Start difference. First operand 16577 states and 26583 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:31,588 INFO L93 Difference]: Finished difference Result 64312 states and 104401 transitions. [2023-12-21 11:22:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:31,801 INFO L225 Difference]: With dead ends: 64312 [2023-12-21 11:22:31,801 INFO L226 Difference]: Without dead ends: 47750 [2023-12-21 11:22:31,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:31,860 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1423 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:31,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1536 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:22:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47750 states. [2023-12-21 11:22:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47750 to 32931. [2023-12-21 11:22:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32931 states, 29958 states have (on average 1.5698644769343748) internal successors, (47030), 30087 states have internal predecessors, (47030), 2070 states have call successors, (2070), 774 states have call predecessors, (2070), 902 states have return successors, (4385), 2197 states have call predecessors, (4385), 2070 states have call successors, (4385) [2023-12-21 11:22:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32931 states to 32931 states and 53485 transitions. [2023-12-21 11:22:33,590 INFO L78 Accepts]: Start accepts. Automaton has 32931 states and 53485 transitions. Word has length 136 [2023-12-21 11:22:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:33,592 INFO L495 AbstractCegarLoop]: Abstraction has 32931 states and 53485 transitions. [2023-12-21 11:22:33,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 32931 states and 53485 transitions. [2023-12-21 11:22:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:33,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:33,638 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] [2023-12-21 11:22:33,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:22:33,639 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:33,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2015674353, now seen corresponding path program 1 times [2023-12-21 11:22:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766245308] [2023-12-21 11:22:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:33,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:33,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:33,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766245308] [2023-12-21 11:22:33,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766245308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:33,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:33,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298826026] [2023-12-21 11:22:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:33,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:33,816 INFO L87 Difference]: Start difference. First operand 32931 states and 53485 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:36,249 INFO L93 Difference]: Finished difference Result 75395 states and 124793 transitions. [2023-12-21 11:22:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:22:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:36,437 INFO L225 Difference]: With dead ends: 75395 [2023-12-21 11:22:36,437 INFO L226 Difference]: Without dead ends: 42479 [2023-12-21 11:22:36,521 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 [2023-12-21 11:22:36,522 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 946 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 661 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:22:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42479 states. [2023-12-21 11:22:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42479 to 32931. [2023-12-21 11:22:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32931 states, 29958 states have (on average 1.565558448494559) internal successors, (46901), 30087 states have internal predecessors, (46901), 2070 states have call successors, (2070), 774 states have call predecessors, (2070), 902 states have return successors, (4385), 2197 states have call predecessors, (4385), 2070 states have call successors, (4385) [2023-12-21 11:22:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32931 states to 32931 states and 53356 transitions. [2023-12-21 11:22:38,652 INFO L78 Accepts]: Start accepts. Automaton has 32931 states and 53356 transitions. Word has length 136 [2023-12-21 11:22:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:38,653 INFO L495 AbstractCegarLoop]: Abstraction has 32931 states and 53356 transitions. [2023-12-21 11:22:38,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 32931 states and 53356 transitions. [2023-12-21 11:22:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:38,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:38,693 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] [2023-12-21 11:22:38,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:22:38,694 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:38,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2134115827, now seen corresponding path program 1 times [2023-12-21 11:22:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:38,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762971639] [2023-12-21 11:22:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:38,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:38,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762971639] [2023-12-21 11:22:38,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762971639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:38,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:38,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114172336] [2023-12-21 11:22:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:38,883 INFO L87 Difference]: Start difference. First operand 32931 states and 53356 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:43,771 INFO L93 Difference]: Finished difference Result 122580 states and 201261 transitions. [2023-12-21 11:22:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:43,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:44,111 INFO L225 Difference]: With dead ends: 122580 [2023-12-21 11:22:44,112 INFO L226 Difference]: Without dead ends: 89664 [2023-12-21 11:22:44,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:44,200 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1279 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:44,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1012 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:22:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89664 states. [2023-12-21 11:22:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89664 to 65894. [2023-12-21 11:22:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65894 states, 60105 states have (on average 1.565177605856418) internal successors, (94075), 60362 states have internal predecessors, (94075), 3990 states have call successors, (3990), 1542 states have call predecessors, (3990), 1798 states have return successors, (10807), 4245 states have call predecessors, (10807), 3990 states have call successors, (10807) [2023-12-21 11:22:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65894 states to 65894 states and 108872 transitions. [2023-12-21 11:22:47,343 INFO L78 Accepts]: Start accepts. Automaton has 65894 states and 108872 transitions. Word has length 136 [2023-12-21 11:22:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:22:47,343 INFO L495 AbstractCegarLoop]: Abstraction has 65894 states and 108872 transitions. [2023-12-21 11:22:47,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 65894 states and 108872 transitions. [2023-12-21 11:22:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:22:47,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:22:47,424 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] [2023-12-21 11:22:47,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:22:47,424 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:22:47,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:22:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash -771557455, now seen corresponding path program 1 times [2023-12-21 11:22:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:22:47,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707734401] [2023-12-21 11:22:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:22:47,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:22:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:22:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:22:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:22:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:22:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:22:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:22:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:22:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:22:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707734401] [2023-12-21 11:22:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707734401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:22:47,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:22:47,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:22:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52789384] [2023-12-21 11:22:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:22:47,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:22:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:22:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:22:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:22:47,627 INFO L87 Difference]: Start difference. First operand 65894 states and 108872 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:22:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:22:54,711 INFO L93 Difference]: Finished difference Result 240789 states and 403655 transitions. [2023-12-21 11:22:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:22:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:22:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:22:55,336 INFO L225 Difference]: With dead ends: 240789 [2023-12-21 11:22:55,336 INFO L226 Difference]: Without dead ends: 174910 [2023-12-21 11:22:55,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:22:55,464 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1270 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:22:55,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1536 Invalid, 3138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3078 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:22:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174910 states. [2023-12-21 11:23:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174910 to 131815. [2023-12-21 11:23:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131815 states, 120522 states have (on average 1.5654320373043926) internal successors, (188669), 121035 states have internal predecessors, (188669), 7702 states have call successors, (7702), 3078 states have call predecessors, (7702), 3590 states have return successors, (27897), 8213 states have call predecessors, (27897), 7702 states have call successors, (27897) [2023-12-21 11:23:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131815 states to 131815 states and 224268 transitions. [2023-12-21 11:23:02,161 INFO L78 Accepts]: Start accepts. Automaton has 131815 states and 224268 transitions. Word has length 136 [2023-12-21 11:23:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:02,161 INFO L495 AbstractCegarLoop]: Abstraction has 131815 states and 224268 transitions. [2023-12-21 11:23:02,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:23:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 131815 states and 224268 transitions. [2023-12-21 11:23:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:23:02,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:02,581 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] [2023-12-21 11:23:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:23:02,582 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:02,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1490015795, now seen corresponding path program 1 times [2023-12-21 11:23:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:02,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644645686] [2023-12-21 11:23:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:02,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:23:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:23:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:23:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:23:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:23:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:02,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:02,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644645686] [2023-12-21 11:23:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644645686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:02,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219150260] [2023-12-21 11:23:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:02,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:02,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:02,739 INFO L87 Difference]: Start difference. First operand 131815 states and 224268 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:23:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:08,861 INFO L93 Difference]: Finished difference Result 297861 states and 522626 transitions. [2023-12-21 11:23:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:23:08,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:23:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:09,619 INFO L225 Difference]: With dead ends: 297861 [2023-12-21 11:23:09,619 INFO L226 Difference]: Without dead ends: 166061 [2023-12-21 11:23:09,816 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 [2023-12-21 11:23:09,816 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 946 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:09,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 661 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:23:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166061 states. [2023-12-21 11:23:15,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166061 to 131815. [2023-12-21 11:23:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131815 states, 120522 states have (on average 1.5611755530110685) internal successors, (188156), 121035 states have internal predecessors, (188156), 7702 states have call successors, (7702), 3078 states have call predecessors, (7702), 3590 states have return successors, (27897), 8213 states have call predecessors, (27897), 7702 states have call successors, (27897) [2023-12-21 11:23:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131815 states to 131815 states and 223755 transitions. [2023-12-21 11:23:16,261 INFO L78 Accepts]: Start accepts. Automaton has 131815 states and 223755 transitions. Word has length 136 [2023-12-21 11:23:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:16,261 INFO L495 AbstractCegarLoop]: Abstraction has 131815 states and 223755 transitions. [2023-12-21 11:23:16,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:23:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 131815 states and 223755 transitions. [2023-12-21 11:23:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 11:23:16,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:16,384 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] [2023-12-21 11:23:16,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:23:16,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:16,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:16,385 INFO L85 PathProgramCache]: Analyzing trace with hash -376692879, now seen corresponding path program 1 times [2023-12-21 11:23:16,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329237939] [2023-12-21 11:23:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:23:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 11:23:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:23:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:23:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:23:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:16,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329237939] [2023-12-21 11:23:16,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329237939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:16,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:16,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:16,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457781092] [2023-12-21 11:23:16,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:16,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:16,837 INFO L87 Difference]: Start difference. First operand 131815 states and 223755 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-21 11:23:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:28,841 INFO L93 Difference]: Finished difference Result 466706 states and 806469 transitions. [2023-12-21 11:23:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:23:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 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 136 [2023-12-21 11:23:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:30,411 INFO L225 Difference]: With dead ends: 466706 [2023-12-21 11:23:30,412 INFO L226 Difference]: Without dead ends: 334906 [2023-12-21 11:23:30,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:23:30,843 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1189 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 3130 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:30,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1536 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3130 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 11:23:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334906 states.