/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:04:33,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:04:33,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:04:33,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:04:33,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:04:33,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:04:33,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:04:33,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:04:33,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:04:33,583 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:04:33,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:04:33,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:04:33,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:04:33,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:04:33,584 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:04:33,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:04:33,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:04:33,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:04:33,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:04:33,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:04:33,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:04:33,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:04:33,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:04:33,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:04:33,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:04:33,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:04:33,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:04:33,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:04:33,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:04:33,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:04:33,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:04:33,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:33,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:04:33,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:04:33,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:04:33,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:04:33,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:04:33,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:04:33,589 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:04:33,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:04:33,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:04:33,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:04:33,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:04:33,746 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:04:33,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2023-12-15 18:04:34,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:04:35,143 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:04:35,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2023-12-15 18:04:35,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a397d32/f2f4e408b4ff458784de833838314378/FLAG6f28f4ef7 [2023-12-15 18:04:35,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a397d32/f2f4e408b4ff458784de833838314378 [2023-12-15 18:04:35,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:04:35,171 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:04:35,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:35,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:04:35,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:04:35,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6230c3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35, skipping insertion in model container [2023-12-15 18:04:35,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:04:35,391 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2023-12-15 18:04:35,453 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2023-12-15 18:04:35,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:35,551 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:04:35,582 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2023-12-15 18:04:35,599 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2023-12-15 18:04:35,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:35,666 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:04:35,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35 WrapperNode [2023-12-15 18:04:35,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:35,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:35,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:04:35,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:04:35,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,735 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 843 [2023-12-15 18:04:35,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:35,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:04:35,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:04:35,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:04:35,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,790 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:04:35,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:04:35,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:04:35,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:04:35,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:04:35,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (1/1) ... [2023-12-15 18:04:35,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:35,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:04:35,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:04:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:04:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:04:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:04:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:04:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:04:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:04:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:04:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:04:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:04:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:04:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:04:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:04:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:04:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:04:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:04:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:04:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:04:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:04:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:04:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:04:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:04:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:04:36,114 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:04:36,116 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:04:36,712 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:04:36,766 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:04:36,766 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-15 18:04:36,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:36 BoogieIcfgContainer [2023-12-15 18:04:36,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:04:36,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:04:36,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:04:36,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:04:36,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:04:35" (1/3) ... [2023-12-15 18:04:36,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d75a2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:36, skipping insertion in model container [2023-12-15 18:04:36,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:35" (2/3) ... [2023-12-15 18:04:36,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d75a2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:36, skipping insertion in model container [2023-12-15 18:04:36,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:36" (3/3) ... [2023-12-15 18:04:36,772 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2023-12-15 18:04:36,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:04:36,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:04:36,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:04:36,824 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;@7fd50582, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:04:36,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:04:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 279 states have (on average 1.7096774193548387) internal successors, (477), 284 states have internal predecessors, (477), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 18:04:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:04:36,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:36,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:36,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:36,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 684512501, now seen corresponding path program 1 times [2023-12-15 18:04:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815999730] [2023-12-15 18:04:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:37,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815999730] [2023-12-15 18:04:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815999730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:37,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:37,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124285364] [2023-12-15 18:04:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:37,119 INFO L87 Difference]: Start difference. First operand has 319 states, 279 states have (on average 1.7096774193548387) internal successors, (477), 284 states have internal predecessors, (477), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:04:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:37,648 INFO L93 Difference]: Finished difference Result 628 states and 1044 transitions. [2023-12-15 18:04:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-15 18:04:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:37,658 INFO L225 Difference]: With dead ends: 628 [2023-12-15 18:04:37,658 INFO L226 Difference]: Without dead ends: 322 [2023-12-15 18:04:37,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:37,664 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 286 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:37,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 687 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-15 18:04:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2023-12-15 18:04:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 276 states have (on average 1.5905797101449275) internal successors, (439), 279 states have internal predecessors, (439), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 18:04:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 493 transitions. [2023-12-15 18:04:37,709 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 493 transitions. Word has length 37 [2023-12-15 18:04:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:37,710 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 493 transitions. [2023-12-15 18:04:37,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:04:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 493 transitions. [2023-12-15 18:04:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:04:37,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:37,712 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] [2023-12-15 18:04:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:04:37,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:37,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1366471497, now seen corresponding path program 1 times [2023-12-15 18:04:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352151017] [2023-12-15 18:04:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352151017] [2023-12-15 18:04:37,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352151017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:37,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:37,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951570945] [2023-12-15 18:04:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:37,843 INFO L87 Difference]: Start difference. First operand 314 states and 493 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,173 INFO L93 Difference]: Finished difference Result 433 states and 665 transitions. [2023-12-15 18:04:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-15 18:04:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,176 INFO L225 Difference]: With dead ends: 433 [2023-12-15 18:04:38,176 INFO L226 Difference]: Without dead ends: 377 [2023-12-15 18:04:38,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:38,177 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 652 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:38,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 558 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-15 18:04:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2023-12-15 18:04:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 326 states have (on average 1.5582822085889572) internal successors, (508), 330 states have internal predecessors, (508), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2023-12-15 18:04:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 576 transitions. [2023-12-15 18:04:38,199 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 576 transitions. Word has length 37 [2023-12-15 18:04:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,199 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 576 transitions. [2023-12-15 18:04:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 576 transitions. [2023-12-15 18:04:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:04:38,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:38,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:04:38,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:38,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash 926183912, now seen corresponding path program 1 times [2023-12-15 18:04:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606116125] [2023-12-15 18:04:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:04:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:38,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606116125] [2023-12-15 18:04:38,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606116125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:38,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:38,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131243190] [2023-12-15 18:04:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:38,246 INFO L87 Difference]: Start difference. First operand 371 states and 576 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,529 INFO L93 Difference]: Finished difference Result 605 states and 920 transitions. [2023-12-15 18:04:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:38,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-15 18:04:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,532 INFO L225 Difference]: With dead ends: 605 [2023-12-15 18:04:38,532 INFO L226 Difference]: Without dead ends: 494 [2023-12-15 18:04:38,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:38,534 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 670 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:38,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 560 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-15 18:04:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 471. [2023-12-15 18:04:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 413 states have (on average 1.5157384987893463) internal successors, (626), 418 states have internal predecessors, (626), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2023-12-15 18:04:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 716 transitions. [2023-12-15 18:04:38,555 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 716 transitions. Word has length 38 [2023-12-15 18:04:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,555 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 716 transitions. [2023-12-15 18:04:38,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 716 transitions. [2023-12-15 18:04:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:04:38,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:04:38,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2063654889, now seen corresponding path program 1 times [2023-12-15 18:04:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108993898] [2023-12-15 18:04:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:04:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108993898] [2023-12-15 18:04:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108993898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:38,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:38,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:38,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091150050] [2023-12-15 18:04:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:38,596 INFO L87 Difference]: Start difference. First operand 471 states and 716 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,931 INFO L93 Difference]: Finished difference Result 891 states and 1297 transitions. [2023-12-15 18:04:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:38,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-15 18:04:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,935 INFO L225 Difference]: With dead ends: 891 [2023-12-15 18:04:38,935 INFO L226 Difference]: Without dead ends: 680 [2023-12-15 18:04:38,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:38,944 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 269 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:38,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 782 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-12-15 18:04:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 576. [2023-12-15 18:04:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 506 states have (on average 1.492094861660079) internal successors, (755), 513 states have internal predecessors, (755), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (56), 42 states have call predecessors, (56), 44 states have call successors, (56) [2023-12-15 18:04:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 857 transitions. [2023-12-15 18:04:38,987 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 857 transitions. Word has length 39 [2023-12-15 18:04:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,987 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 857 transitions. [2023-12-15 18:04:38,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 857 transitions. [2023-12-15 18:04:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:04:38,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:38,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:04:38,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:38,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash -629290764, now seen corresponding path program 1 times [2023-12-15 18:04:38,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:38,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102536116] [2023-12-15 18:04:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:04:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:04:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102536116] [2023-12-15 18:04:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102536116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925963645] [2023-12-15 18:04:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:39,044 INFO L87 Difference]: Start difference. First operand 576 states and 857 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:39,377 INFO L93 Difference]: Finished difference Result 881 states and 1279 transitions. [2023-12-15 18:04:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-15 18:04:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:39,380 INFO L225 Difference]: With dead ends: 881 [2023-12-15 18:04:39,381 INFO L226 Difference]: Without dead ends: 670 [2023-12-15 18:04:39,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:39,382 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 254 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:39,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 827 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-15 18:04:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 636. [2023-12-15 18:04:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 557 states have (on average 1.4649910233393177) internal successors, (816), 565 states have internal predecessors, (816), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 47 states have call predecessors, (65), 49 states have call successors, (65) [2023-12-15 18:04:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 932 transitions. [2023-12-15 18:04:39,404 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 932 transitions. Word has length 54 [2023-12-15 18:04:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:39,404 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 932 transitions. [2023-12-15 18:04:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 932 transitions. [2023-12-15 18:04:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:04:39,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:39,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:04:39,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:39,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash -88862144, now seen corresponding path program 1 times [2023-12-15 18:04:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:39,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755659370] [2023-12-15 18:04:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:04:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:04:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:04:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755659370] [2023-12-15 18:04:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755659370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:39,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:39,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142074064] [2023-12-15 18:04:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:39,542 INFO L87 Difference]: Start difference. First operand 636 states and 932 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:39,842 INFO L93 Difference]: Finished difference Result 1125 states and 1592 transitions. [2023-12-15 18:04:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-15 18:04:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:39,846 INFO L225 Difference]: With dead ends: 1125 [2023-12-15 18:04:39,846 INFO L226 Difference]: Without dead ends: 790 [2023-12-15 18:04:39,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:39,848 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 656 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:39,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 572 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-12-15 18:04:39,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 741. [2023-12-15 18:04:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 649 states have (on average 1.431432973805855) internal successors, (929), 658 states have internal predecessors, (929), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2023-12-15 18:04:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1063 transitions. [2023-12-15 18:04:39,884 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1063 transitions. Word has length 59 [2023-12-15 18:04:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:39,884 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1063 transitions. [2023-12-15 18:04:39,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1063 transitions. [2023-12-15 18:04:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:39,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:39,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:39,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:04:39,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:39,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash -248733713, now seen corresponding path program 1 times [2023-12-15 18:04:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017600526] [2023-12-15 18:04:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017600526] [2023-12-15 18:04:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017600526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:39,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492710117] [2023-12-15 18:04:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:39,976 INFO L87 Difference]: Start difference. First operand 741 states and 1063 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:40,368 INFO L93 Difference]: Finished difference Result 1213 states and 1709 transitions. [2023-12-15 18:04:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-15 18:04:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:40,372 INFO L225 Difference]: With dead ends: 1213 [2023-12-15 18:04:40,372 INFO L226 Difference]: Without dead ends: 818 [2023-12-15 18:04:40,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:40,373 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 207 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:40,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1012 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-15 18:04:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 745. [2023-12-15 18:04:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 652 states have (on average 1.4125766871165644) internal successors, (921), 662 states have internal predecessors, (921), 58 states have call successors, (58), 29 states have call predecessors, (58), 33 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2023-12-15 18:04:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1055 transitions. [2023-12-15 18:04:40,400 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1055 transitions. Word has length 60 [2023-12-15 18:04:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:40,400 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1055 transitions. [2023-12-15 18:04:40,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1055 transitions. [2023-12-15 18:04:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:40,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:40,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:04:40,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1548905903, now seen corresponding path program 1 times [2023-12-15 18:04:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476302327] [2023-12-15 18:04:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476302327] [2023-12-15 18:04:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476302327] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189406671] [2023-12-15 18:04:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:40,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:40,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:40,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:04:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:40,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:04:40,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:40,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189406671] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:40,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:04:40,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:04:40,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18809291] [2023-12-15 18:04:40,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:40,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:40,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:40,726 INFO L87 Difference]: Start difference. First operand 745 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:40,883 INFO L93 Difference]: Finished difference Result 794 states and 1116 transitions. [2023-12-15 18:04:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:04:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-15 18:04:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:40,886 INFO L225 Difference]: With dead ends: 794 [2023-12-15 18:04:40,886 INFO L226 Difference]: Without dead ends: 791 [2023-12-15 18:04:40,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:04:40,887 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 884 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:40,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 527 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:04:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-15 18:04:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 744. [2023-12-15 18:04:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 652 states have (on average 1.4095092024539877) internal successors, (919), 661 states have internal predecessors, (919), 57 states have call successors, (57), 29 states have call predecessors, (57), 33 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2023-12-15 18:04:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1052 transitions. [2023-12-15 18:04:40,914 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1052 transitions. Word has length 60 [2023-12-15 18:04:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1052 transitions. [2023-12-15 18:04:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1052 transitions. [2023-12-15 18:04:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:04:40,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:40,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:40,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:41,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:41,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 770334435, now seen corresponding path program 1 times [2023-12-15 18:04:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121935277] [2023-12-15 18:04:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121935277] [2023-12-15 18:04:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121935277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306962115] [2023-12-15 18:04:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:41,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:41,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:41,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:41,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:04:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:41,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:04:41,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:41,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306962115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:04:41,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:04:41,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:04:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500649652] [2023-12-15 18:04:41,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:04:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:04:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:04:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:04:41,479 INFO L87 Difference]: Start difference. First operand 744 states and 1052 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:04:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:42,360 INFO L93 Difference]: Finished difference Result 1980 states and 2704 transitions. [2023-12-15 18:04:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:04:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-15 18:04:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:42,366 INFO L225 Difference]: With dead ends: 1980 [2023-12-15 18:04:42,366 INFO L226 Difference]: Without dead ends: 1582 [2023-12-15 18:04:42,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:04:42,369 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1298 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:42,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1907 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-12-15 18:04:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1073. [2023-12-15 18:04:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 944 states have (on average 1.3697033898305084) internal successors, (1293), 960 states have internal predecessors, (1293), 76 states have call successors, (76), 42 states have call predecessors, (76), 51 states have return successors, (107), 71 states have call predecessors, (107), 75 states have call successors, (107) [2023-12-15 18:04:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1476 transitions. [2023-12-15 18:04:42,418 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1476 transitions. Word has length 61 [2023-12-15 18:04:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:42,418 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1476 transitions. [2023-12-15 18:04:42,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:04:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1476 transitions. [2023-12-15 18:04:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:04:42,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:42,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:42,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:42,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-15 18:04:42,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:42,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1733838974, now seen corresponding path program 1 times [2023-12-15 18:04:42,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919121405] [2023-12-15 18:04:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:04:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:04:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919121405] [2023-12-15 18:04:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919121405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:42,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966885998] [2023-12-15 18:04:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:42,699 INFO L87 Difference]: Start difference. First operand 1073 states and 1476 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:04:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:43,002 INFO L93 Difference]: Finished difference Result 1707 states and 2299 transitions. [2023-12-15 18:04:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:43,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-15 18:04:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:43,007 INFO L225 Difference]: With dead ends: 1707 [2023-12-15 18:04:43,007 INFO L226 Difference]: Without dead ends: 1042 [2023-12-15 18:04:43,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:43,008 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 670 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:43,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 589 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-12-15 18:04:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 965. [2023-12-15 18:04:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 849 states have (on average 1.3722025912838633) internal successors, (1165), 865 states have internal predecessors, (1165), 69 states have call successors, (69), 37 states have call predecessors, (69), 45 states have return successors, (96), 63 states have call predecessors, (96), 68 states have call successors, (96) [2023-12-15 18:04:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1330 transitions. [2023-12-15 18:04:43,072 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1330 transitions. Word has length 78 [2023-12-15 18:04:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:43,073 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1330 transitions. [2023-12-15 18:04:43,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:04:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1330 transitions. [2023-12-15 18:04:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:04:43,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:43,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:43,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:04:43,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:43,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1238688027, now seen corresponding path program 1 times [2023-12-15 18:04:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909287892] [2023-12-15 18:04:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:04:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:04:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:04:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:04:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909287892] [2023-12-15 18:04:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909287892] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426685872] [2023-12-15 18:04:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:43,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:43,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:43,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:04:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:43,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:43,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426685872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:43,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848252875] [2023-12-15 18:04:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:43,292 INFO L87 Difference]: Start difference. First operand 965 states and 1330 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:04:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:43,363 INFO L93 Difference]: Finished difference Result 1250 states and 1688 transitions. [2023-12-15 18:04:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-15 18:04:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:43,365 INFO L225 Difference]: With dead ends: 1250 [2023-12-15 18:04:43,365 INFO L226 Difference]: Without dead ends: 255 [2023-12-15 18:04:43,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:43,367 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 55 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:43,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 920 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-12-15 18:04:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-12-15 18:04:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 226 states have (on average 1.6150442477876106) internal successors, (365), 227 states have internal predecessors, (365), 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) [2023-12-15 18:04:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 409 transitions. [2023-12-15 18:04:43,377 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 409 transitions. Word has length 92 [2023-12-15 18:04:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:43,377 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 409 transitions. [2023-12-15 18:04:43,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:04:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 409 transitions. [2023-12-15 18:04:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:43,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:43,378 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] [2023-12-15 18:04:43,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:43,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:43,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:43,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 462683613, now seen corresponding path program 1 times [2023-12-15 18:04:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309079390] [2023-12-15 18:04:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:43,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:43,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309079390] [2023-12-15 18:04:43,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309079390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:43,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:43,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057705752] [2023-12-15 18:04:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:43,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:43,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:43,702 INFO L87 Difference]: Start difference. First operand 255 states and 409 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-15 18:04:44,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:44,682 INFO L93 Difference]: Finished difference Result 593 states and 968 transitions. [2023-12-15 18:04:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:04:44,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:44,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:44,684 INFO L225 Difference]: With dead ends: 593 [2023-12-15 18:04:44,685 INFO L226 Difference]: Without dead ends: 345 [2023-12-15 18:04:44,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:04:44,686 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 691 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 458 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:04:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-12-15 18:04:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 255. [2023-12-15 18:04:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 226 states have (on average 1.6106194690265487) internal successors, (364), 227 states have internal predecessors, (364), 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) [2023-12-15 18:04:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 408 transitions. [2023-12-15 18:04:44,698 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 408 transitions. Word has length 121 [2023-12-15 18:04:44,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:44,698 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 408 transitions. [2023-12-15 18:04:44,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-15 18:04:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 408 transitions. [2023-12-15 18:04:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:44,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:44,701 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] [2023-12-15 18:04:44,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:04:44,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:44,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1264461349, now seen corresponding path program 1 times [2023-12-15 18:04:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:44,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684160177] [2023-12-15 18:04:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684160177] [2023-12-15 18:04:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684160177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:44,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372801378] [2023-12-15 18:04:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:44,849 INFO L87 Difference]: Start difference. First operand 255 states and 408 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-12-15 18:04:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:46,402 INFO L93 Difference]: Finished difference Result 926 states and 1518 transitions. [2023-12-15 18:04:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:04:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:46,406 INFO L225 Difference]: With dead ends: 926 [2023-12-15 18:04:46,406 INFO L226 Difference]: Without dead ends: 686 [2023-12-15 18:04:46,407 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 [2023-12-15 18:04:46,408 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1047 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:46,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 771 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:04:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-15 18:04:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 507. [2023-12-15 18:04:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 454 states have (on average 1.6211453744493391) internal successors, (736), 456 states have internal predecessors, (736), 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) [2023-12-15 18:04:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 817 transitions. [2023-12-15 18:04:46,460 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 817 transitions. Word has length 121 [2023-12-15 18:04:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:46,461 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 817 transitions. [2023-12-15 18:04:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-12-15 18:04:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 817 transitions. [2023-12-15 18:04:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:46,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:46,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:04:46,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:46,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -719172837, now seen corresponding path program 1 times [2023-12-15 18:04:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856453025] [2023-12-15 18:04:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856453025] [2023-12-15 18:04:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856453025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:46,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115624757] [2023-12-15 18:04:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:46,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:46,640 INFO L87 Difference]: Start difference. First operand 507 states and 817 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:48,637 INFO L93 Difference]: Finished difference Result 1531 states and 2508 transitions. [2023-12-15 18:04:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:48,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:48,641 INFO L225 Difference]: With dead ends: 1531 [2023-12-15 18:04:48,641 INFO L226 Difference]: Without dead ends: 1039 [2023-12-15 18:04:48,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:48,643 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1143 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:48,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1024 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:04:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-15 18:04:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 740. [2023-12-15 18:04:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 663 states have (on average 1.6138763197586727) internal successors, (1070), 666 states have internal predecessors, (1070), 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) [2023-12-15 18:04:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1187 transitions. [2023-12-15 18:04:48,710 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1187 transitions. Word has length 121 [2023-12-15 18:04:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:48,710 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1187 transitions. [2023-12-15 18:04:48,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1187 transitions. [2023-12-15 18:04:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:48,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:48,711 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] [2023-12-15 18:04:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:04:48,711 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1542400413, now seen corresponding path program 1 times [2023-12-15 18:04:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232210541] [2023-12-15 18:04:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232210541] [2023-12-15 18:04:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232210541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674126177] [2023-12-15 18:04:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:48,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:48,890 INFO L87 Difference]: Start difference. First operand 740 states and 1187 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:50,013 INFO L93 Difference]: Finished difference Result 1774 states and 2904 transitions. [2023-12-15 18:04:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:50,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:50,024 INFO L225 Difference]: With dead ends: 1774 [2023-12-15 18:04:50,025 INFO L226 Difference]: Without dead ends: 1049 [2023-12-15 18:04:50,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:50,029 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 774 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:50,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 744 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:04:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-12-15 18:04:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 740. [2023-12-15 18:04:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 663 states have (on average 1.6093514328808447) internal successors, (1067), 666 states have internal predecessors, (1067), 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) [2023-12-15 18:04:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1184 transitions. [2023-12-15 18:04:50,104 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1184 transitions. Word has length 121 [2023-12-15 18:04:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:50,104 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1184 transitions. [2023-12-15 18:04:50,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1184 transitions. [2023-12-15 18:04:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:50,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:50,105 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] [2023-12-15 18:04:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:04:50,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 235258015, now seen corresponding path program 1 times [2023-12-15 18:04:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014451302] [2023-12-15 18:04:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:50,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014451302] [2023-12-15 18:04:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014451302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:50,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:50,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733969939] [2023-12-15 18:04:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:50,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:50,259 INFO L87 Difference]: Start difference. First operand 740 states and 1184 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:51,217 INFO L93 Difference]: Finished difference Result 1770 states and 2887 transitions. [2023-12-15 18:04:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:51,223 INFO L225 Difference]: With dead ends: 1770 [2023-12-15 18:04:51,223 INFO L226 Difference]: Without dead ends: 1045 [2023-12-15 18:04:51,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:51,225 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 881 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:51,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 625 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-15 18:04:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 740. [2023-12-15 18:04:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 663 states have (on average 1.6048265460030167) internal successors, (1064), 666 states have internal predecessors, (1064), 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) [2023-12-15 18:04:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1181 transitions. [2023-12-15 18:04:51,294 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1181 transitions. Word has length 121 [2023-12-15 18:04:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:51,294 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1181 transitions. [2023-12-15 18:04:51,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1181 transitions. [2023-12-15 18:04:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:51,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:51,295 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] [2023-12-15 18:04:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:04:51,296 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:51,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2132754781, now seen corresponding path program 1 times [2023-12-15 18:04:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:51,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073697275] [2023-12-15 18:04:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073697275] [2023-12-15 18:04:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073697275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106105715] [2023-12-15 18:04:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:51,464 INFO L87 Difference]: Start difference. First operand 740 states and 1181 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:52,473 INFO L93 Difference]: Finished difference Result 1766 states and 2870 transitions. [2023-12-15 18:04:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:52,477 INFO L225 Difference]: With dead ends: 1766 [2023-12-15 18:04:52,477 INFO L226 Difference]: Without dead ends: 1041 [2023-12-15 18:04:52,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:52,479 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 879 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:52,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 625 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:04:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-15 18:04:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 740. [2023-12-15 18:04:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 663 states have (on average 1.6003016591251886) internal successors, (1061), 666 states have internal predecessors, (1061), 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) [2023-12-15 18:04:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1178 transitions. [2023-12-15 18:04:52,538 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1178 transitions. Word has length 121 [2023-12-15 18:04:52,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:52,538 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1178 transitions. [2023-12-15 18:04:52,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1178 transitions. [2023-12-15 18:04:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:52,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:52,540 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] [2023-12-15 18:04:52,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:04:52,540 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:52,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:52,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1131171617, now seen corresponding path program 1 times [2023-12-15 18:04:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:52,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830461660] [2023-12-15 18:04:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:52,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830461660] [2023-12-15 18:04:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830461660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:52,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:52,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704748638] [2023-12-15 18:04:52,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:52,695 INFO L87 Difference]: Start difference. First operand 740 states and 1178 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:54,478 INFO L93 Difference]: Finished difference Result 2404 states and 3884 transitions. [2023-12-15 18:04:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:54,484 INFO L225 Difference]: With dead ends: 2404 [2023-12-15 18:04:54,485 INFO L226 Difference]: Without dead ends: 1679 [2023-12-15 18:04:54,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:54,487 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1062 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:54,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1454 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:04:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2023-12-15 18:04:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1219. [2023-12-15 18:04:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1094 states have (on average 1.5923217550274222) internal successors, (1742), 1099 states have internal predecessors, (1742), 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) [2023-12-15 18:04:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1935 transitions. [2023-12-15 18:04:54,535 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1935 transitions. Word has length 121 [2023-12-15 18:04:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1935 transitions. [2023-12-15 18:04:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1935 transitions. [2023-12-15 18:04:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:54,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:54,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:04:54,536 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:54,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1257392413, now seen corresponding path program 1 times [2023-12-15 18:04:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769364285] [2023-12-15 18:04:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769364285] [2023-12-15 18:04:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769364285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:54,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639638660] [2023-12-15 18:04:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:54,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:54,657 INFO L87 Difference]: Start difference. First operand 1219 states and 1935 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:55,609 INFO L93 Difference]: Finished difference Result 2870 states and 4629 transitions. [2023-12-15 18:04:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:55,616 INFO L225 Difference]: With dead ends: 2870 [2023-12-15 18:04:55,616 INFO L226 Difference]: Without dead ends: 1666 [2023-12-15 18:04:55,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:04:55,619 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 878 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:55,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 625 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:04:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-12-15 18:04:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1219. [2023-12-15 18:04:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1094 states have (on average 1.5877513711151736) internal successors, (1737), 1099 states have internal predecessors, (1737), 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) [2023-12-15 18:04:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1930 transitions. [2023-12-15 18:04:55,669 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1930 transitions. Word has length 121 [2023-12-15 18:04:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:55,669 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1930 transitions. [2023-12-15 18:04:55,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1930 transitions. [2023-12-15 18:04:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:55,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:55,670 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] [2023-12-15 18:04:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:04:55,671 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:55,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1436503777, now seen corresponding path program 1 times [2023-12-15 18:04:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:55,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231613732] [2023-12-15 18:04:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:55,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231613732] [2023-12-15 18:04:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231613732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:55,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593857466] [2023-12-15 18:04:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:55,801 INFO L87 Difference]: Start difference. First operand 1219 states and 1930 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:57,931 INFO L93 Difference]: Finished difference Result 4105 states and 6581 transitions. [2023-12-15 18:04:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:04:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:57,941 INFO L225 Difference]: With dead ends: 4105 [2023-12-15 18:04:57,942 INFO L226 Difference]: Without dead ends: 2901 [2023-12-15 18:04:57,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:04:57,945 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1050 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:57,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1454 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:04:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2023-12-15 18:04:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2177. [2023-12-15 18:04:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1956 states have (on average 1.579243353783231) internal successors, (3089), 1965 states have internal predecessors, (3089), 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) [2023-12-15 18:04:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3440 transitions. [2023-12-15 18:04:58,048 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3440 transitions. Word has length 121 [2023-12-15 18:04:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:58,048 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3440 transitions. [2023-12-15 18:04:58,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:04:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3440 transitions. [2023-12-15 18:04:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:04:58,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:58,050 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] [2023-12-15 18:04:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:04:58,050 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:58,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1801732317, now seen corresponding path program 1 times [2023-12-15 18:04:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713662111] [2023-12-15 18:04:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:04:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:04:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:04:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:58,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:58,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713662111] [2023-12-15 18:04:58,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713662111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:58,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:58,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:58,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858282684] [2023-12-15 18:04:58,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:58,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:58,186 INFO L87 Difference]: Start difference. First operand 2177 states and 3440 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:00,051 INFO L93 Difference]: Finished difference Result 8345 states and 13367 transitions. [2023-12-15 18:05:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:00,076 INFO L225 Difference]: With dead ends: 8345 [2023-12-15 18:05:00,076 INFO L226 Difference]: Without dead ends: 6183 [2023-12-15 18:05:00,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:00,084 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1415 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:00,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 933 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:05:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6183 states. [2023-12-15 18:05:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6183 to 4082. [2023-12-15 18:05:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 3677 states have (on average 1.5749252107696492) internal successors, (5791), 3694 states have internal predecessors, (5791), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2023-12-15 18:05:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 6460 transitions. [2023-12-15 18:05:00,300 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 6460 transitions. Word has length 121 [2023-12-15 18:05:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 4082 states and 6460 transitions. [2023-12-15 18:05:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 6460 transitions. [2023-12-15 18:05:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:00,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:00,303 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] [2023-12-15 18:05:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:05:00,303 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:00,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1141849761, now seen corresponding path program 1 times [2023-12-15 18:05:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324105167] [2023-12-15 18:05:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324105167] [2023-12-15 18:05:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324105167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455797274] [2023-12-15 18:05:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:00,427 INFO L87 Difference]: Start difference. First operand 4082 states and 6460 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:01,556 INFO L93 Difference]: Finished difference Result 9416 states and 15114 transitions. [2023-12-15 18:05:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:01,574 INFO L225 Difference]: With dead ends: 9416 [2023-12-15 18:05:01,574 INFO L226 Difference]: Without dead ends: 5349 [2023-12-15 18:05:01,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:01,585 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 880 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:01,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 624 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:05:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2023-12-15 18:05:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4082. [2023-12-15 18:05:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 3677 states have (on average 1.5703018765297798) internal successors, (5774), 3694 states have internal predecessors, (5774), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2023-12-15 18:05:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 6443 transitions. [2023-12-15 18:05:01,771 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 6443 transitions. Word has length 121 [2023-12-15 18:05:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:01,771 INFO L495 AbstractCegarLoop]: Abstraction has 4082 states and 6443 transitions. [2023-12-15 18:05:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 6443 transitions. [2023-12-15 18:05:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:01,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:01,774 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] [2023-12-15 18:05:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:05:01,774 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:01,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2025358751, now seen corresponding path program 1 times [2023-12-15 18:05:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:01,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907213824] [2023-12-15 18:05:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907213824] [2023-12-15 18:05:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907213824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:01,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:01,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540812630] [2023-12-15 18:05:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:01,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:01,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:01,934 INFO L87 Difference]: Start difference. First operand 4082 states and 6443 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:04,260 INFO L93 Difference]: Finished difference Result 15364 states and 24581 transitions. [2023-12-15 18:05:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:04,347 INFO L225 Difference]: With dead ends: 15364 [2023-12-15 18:05:04,347 INFO L226 Difference]: Without dead ends: 11297 [2023-12-15 18:05:04,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:04,367 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1232 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:04,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 1447 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:05:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11297 states. [2023-12-15 18:05:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11297 to 7925. [2023-12-15 18:05:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7160 states have (on average 1.5681564245810056) internal successors, (11228), 7193 states have internal predecessors, (11228), 534 states have call successors, (534), 198 states have call predecessors, (534), 230 states have return successors, (809), 565 states have call predecessors, (809), 534 states have call successors, (809) [2023-12-15 18:05:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 12571 transitions. [2023-12-15 18:05:04,841 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 12571 transitions. Word has length 121 [2023-12-15 18:05:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:04,841 INFO L495 AbstractCegarLoop]: Abstraction has 7925 states and 12571 transitions. [2023-12-15 18:05:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 12571 transitions. [2023-12-15 18:05:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:04,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:04,846 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] [2023-12-15 18:05:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:05:04,847 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:04,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2053859041, now seen corresponding path program 1 times [2023-12-15 18:05:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:04,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537495039] [2023-12-15 18:05:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537495039] [2023-12-15 18:05:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537495039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040507634] [2023-12-15 18:05:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:04,971 INFO L87 Difference]: Start difference. First operand 7925 states and 12571 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:07,832 INFO L93 Difference]: Finished difference Result 29589 states and 47559 transitions. [2023-12-15 18:05:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:07,905 INFO L225 Difference]: With dead ends: 29589 [2023-12-15 18:05:07,905 INFO L226 Difference]: Without dead ends: 21679 [2023-12-15 18:05:07,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:07,920 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1080 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:07,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1447 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 18:05:07,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21679 states. [2023-12-15 18:05:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21679 to 15606. [2023-12-15 18:05:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15606 states, 14137 states have (on average 1.5673763882011742) internal successors, (22158), 14202 states have internal predecessors, (22158), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2023-12-15 18:05:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15606 states to 15606 states and 24979 transitions. [2023-12-15 18:05:08,722 INFO L78 Accepts]: Start accepts. Automaton has 15606 states and 24979 transitions. Word has length 121 [2023-12-15 18:05:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:08,722 INFO L495 AbstractCegarLoop]: Abstraction has 15606 states and 24979 transitions. [2023-12-15 18:05:08,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 15606 states and 24979 transitions. [2023-12-15 18:05:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:08,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:08,732 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] [2023-12-15 18:05:08,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:05:08,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:08,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 300526241, now seen corresponding path program 1 times [2023-12-15 18:05:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191486103] [2023-12-15 18:05:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191486103] [2023-12-15 18:05:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191486103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533571492] [2023-12-15 18:05:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:08,875 INFO L87 Difference]: Start difference. First operand 15606 states and 24979 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:10,477 INFO L93 Difference]: Finished difference Result 35450 states and 57611 transitions. [2023-12-15 18:05:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:10,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:10,533 INFO L225 Difference]: With dead ends: 35450 [2023-12-15 18:05:10,533 INFO L226 Difference]: Without dead ends: 19859 [2023-12-15 18:05:10,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:10,566 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 771 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:10,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 743 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:05:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2023-12-15 18:05:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 15606. [2023-12-15 18:05:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15606 states, 14137 states have (on average 1.5627785244394143) internal successors, (22093), 14202 states have internal predecessors, (22093), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2023-12-15 18:05:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15606 states to 15606 states and 24914 transitions. [2023-12-15 18:05:11,495 INFO L78 Accepts]: Start accepts. Automaton has 15606 states and 24914 transitions. Word has length 121 [2023-12-15 18:05:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:11,495 INFO L495 AbstractCegarLoop]: Abstraction has 15606 states and 24914 transitions. [2023-12-15 18:05:11,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 15606 states and 24914 transitions. [2023-12-15 18:05:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:11,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:11,516 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] [2023-12-15 18:05:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:05:11,516 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:11,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2117377825, now seen corresponding path program 1 times [2023-12-15 18:05:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:11,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259655823] [2023-12-15 18:05:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:11,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:11,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259655823] [2023-12-15 18:05:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259655823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79600929] [2023-12-15 18:05:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:11,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:11,670 INFO L87 Difference]: Start difference. First operand 15606 states and 24914 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:15,186 INFO L93 Difference]: Finished difference Result 56722 states and 91717 transitions. [2023-12-15 18:05:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:15,406 INFO L225 Difference]: With dead ends: 56722 [2023-12-15 18:05:15,406 INFO L226 Difference]: Without dead ends: 41131 [2023-12-15 18:05:15,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:15,434 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1054 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:15,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1447 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:05:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41131 states. [2023-12-15 18:05:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41131 to 31032. [2023-12-15 18:05:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31032 states, 28187 states have (on average 1.5616064143044666) internal successors, (44017), 28316 states have internal predecessors, (44017), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2023-12-15 18:05:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31032 states to 31032 states and 50216 transitions. [2023-12-15 18:05:17,223 INFO L78 Accepts]: Start accepts. Automaton has 31032 states and 50216 transitions. Word has length 121 [2023-12-15 18:05:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 31032 states and 50216 transitions. [2023-12-15 18:05:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 31032 states and 50216 transitions. [2023-12-15 18:05:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:17,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:17,239 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] [2023-12-15 18:05:17,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:05:17,239 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:17,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1406855905, now seen corresponding path program 1 times [2023-12-15 18:05:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492393754] [2023-12-15 18:05:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492393754] [2023-12-15 18:05:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492393754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:17,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:17,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316352478] [2023-12-15 18:05:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:17,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:17,354 INFO L87 Difference]: Start difference. First operand 31032 states and 50216 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:22,541 INFO L93 Difference]: Finished difference Result 110930 states and 181997 transitions. [2023-12-15 18:05:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:22,865 INFO L225 Difference]: With dead ends: 110930 [2023-12-15 18:05:22,865 INFO L226 Difference]: Without dead ends: 79913 [2023-12-15 18:05:22,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:22,914 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1082 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:22,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1447 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:05:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79913 states. [2023-12-15 18:05:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79913 to 61881. [2023-12-15 18:05:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61881 states, 56348 states have (on average 1.56149286576276) internal successors, (87987), 56605 states have internal predecessors, (87987), 3734 states have call successors, (3734), 1542 states have call predecessors, (3734), 1798 states have return successors, (10551), 3989 states have call predecessors, (10551), 3734 states have call successors, (10551) [2023-12-15 18:05:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61881 states to 61881 states and 102272 transitions. [2023-12-15 18:05:26,336 INFO L78 Accepts]: Start accepts. Automaton has 61881 states and 102272 transitions. Word has length 121 [2023-12-15 18:05:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:26,336 INFO L495 AbstractCegarLoop]: Abstraction has 61881 states and 102272 transitions. [2023-12-15 18:05:26,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 61881 states and 102272 transitions. [2023-12-15 18:05:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:05:26,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:26,369 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] [2023-12-15 18:05:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:05:26,369 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:26,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash 412162207, now seen corresponding path program 1 times [2023-12-15 18:05:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598044195] [2023-12-15 18:05:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:05:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:05:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:05:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598044195] [2023-12-15 18:05:26,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598044195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:26,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:26,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249954616] [2023-12-15 18:05:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:26,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:26,478 INFO L87 Difference]: Start difference. First operand 61881 states and 102272 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-15 18:05:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:30,248 INFO L93 Difference]: Finished difference Result 138810 states and 234816 transitions. [2023-12-15 18:05:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:30,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:05:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:30,452 INFO L225 Difference]: With dead ends: 138810 [2023-12-15 18:05:30,452 INFO L226 Difference]: Without dead ends: 76944 [2023-12-15 18:05:30,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:30,548 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 879 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:30,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 623 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:05:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76944 states. Received shutdown request... [2023-12-15 18:05:33,819 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:05:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76944 to 61881. [2023-12-15 18:05:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61881 states, 56348 states have (on average 1.5569319230496201) internal successors, (87730), 56605 states have internal predecessors, (87730), 3734 states have call successors, (3734), 1542 states have call predecessors, (3734), 1798 states have return successors, (10551), 3989 states have call predecessors, (10551), 3734 states have call successors, (10551) [2023-12-15 18:05:34,000 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:05:34,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:05:34,001 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 18:05:34,002 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:05:34,005 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-15 18:05:34,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:05:34,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:05:34 BoogieIcfgContainer [2023-12-15 18:05:34,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:05:34,009 INFO L158 Benchmark]: Toolchain (without parser) took 58837.85ms. Allocated memory was 195.0MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 129.0MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 18:05:34,009 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:05:34,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.54ms. Allocated memory was 195.0MB in the beginning and 247.5MB in the end (delta: 52.4MB). Free memory was 128.8MB in the beginning and 208.1MB in the end (delta: -79.3MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. [2023-12-15 18:05:34,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.79ms. Allocated memory is still 247.5MB. Free memory was 208.0MB in the beginning and 211.4MB in the end (delta: -3.3MB). Peak memory consumption was 4.0MB. Max. memory is 8.0GB. [2023-12-15 18:05:34,009 INFO L158 Benchmark]: Boogie Preprocessor took 124.70ms. Allocated memory is still 247.5MB. Free memory was 211.4MB in the beginning and 206.6MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:34,011 INFO L158 Benchmark]: RCFGBuilder took 903.53ms. Allocated memory is still 247.5MB. Free memory was 206.6MB in the beginning and 152.1MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-12-15 18:05:34,011 INFO L158 Benchmark]: TraceAbstraction took 57240.46ms. Allocated memory was 247.5MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 151.1MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 18:05:34,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 495.54ms. Allocated memory was 195.0MB in the beginning and 247.5MB in the end (delta: 52.4MB). Free memory was 128.8MB in the beginning and 208.1MB in the end (delta: -79.3MB). Peak memory consumption was 24.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.79ms. Allocated memory is still 247.5MB. Free memory was 208.0MB in the beginning and 211.4MB in the end (delta: -3.3MB). Peak memory consumption was 4.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 124.70ms. Allocated memory is still 247.5MB. Free memory was 211.4MB in the beginning and 206.6MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 903.53ms. Allocated memory is still 247.5MB. Free memory was 206.6MB in the beginning and 152.1MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57240.46ms. Allocated memory was 247.5MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 151.1MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 319 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 57.2s, OverallIterations: 28, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 40.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23117 SdHoareTripleChecker+Valid, 22.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22699 mSDsluCounter, 25432 SdHoareTripleChecker+Invalid, 19.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17541 mSDsCounter, 1640 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35214 IncrementalHoareTripleChecker+Invalid, 36854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1640 mSolverCounterUnsat, 7891 mSDtfsCounter, 35214 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 906 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61881occurred in iteration=27, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.1s AutomataMinimizationTime, 28 MinimizatonAttempts, 49241 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2885 NumberOfCodeBlocks, 2885 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2973 ConstructedInterpolants, 0 QuantifiedInterpolants, 7756 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1084 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 33 InterpolantComputations, 27 PerfectInterpolantSequences, 207/271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown