/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.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:30:10,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:30:11,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:30:11,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:30:11,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:30:11,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:30:11,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:30:11,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:30:11,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:30:11,049 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:30:11,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:30:11,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:30:11,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:30:11,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:30:11,050 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:30:11,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:30:11,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:30:11,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:30:11,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:30:11,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:30:11,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:30:11,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:30:11,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:30:11,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:30:11,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:30:11,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:30:11,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:30:11,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:30:11,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:30:11,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:30:11,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:30:11,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:30:11,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:30:11,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:30:11,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:30:11,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:30:11,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:30:11,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:30:11,066 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:30:11,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:30:11,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:30:11,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:30:11,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:30:11,351 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:30:11,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2023-12-19 01:30:12,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:30:12,589 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:30:12,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2023-12-19 01:30:12,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2114f56b9/c1e8a18410834611b22c34c0f0bd8916/FLAG156b1639b [2023-12-19 01:30:12,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2114f56b9/c1e8a18410834611b22c34c0f0bd8916 [2023-12-19 01:30:12,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:30:12,613 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:30:12,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:30:12,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:30:12,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:30:12,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:12,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572e97d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12, skipping insertion in model container [2023-12-19 01:30:12,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:12,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:30:12,781 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.04.cil-1.c[913,926] [2023-12-19 01:30:12,811 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.04.cil-1.c[5977,5990] [2023-12-19 01:30:12,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:30:12,867 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:30:12,875 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.04.cil-1.c[913,926] [2023-12-19 01:30:12,887 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.04.cil-1.c[5977,5990] [2023-12-19 01:30:12,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:30:12,940 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:30:12,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12 WrapperNode [2023-12-19 01:30:12,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:30:12,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:30:12,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:30:12,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:30:12,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:12,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,033 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 603 [2023-12-19 01:30:13,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:30:13,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:30:13,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:30:13,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:30:13,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,111 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:30:13,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:30:13,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:30:13,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:30:13,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:30:13,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (1/1) ... [2023-12-19 01:30:13,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:30:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:13,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:30:13,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:30:13,230 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:30:13,231 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:30:13,232 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:30:13,232 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:30:13,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:30:13,330 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:30:13,332 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:30:13,829 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:30:13,897 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:30:13,897 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-19 01:30:13,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:30:13 BoogieIcfgContainer [2023-12-19 01:30:13,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:30:13,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:30:13,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:30:13,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:30:13,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:30:12" (1/3) ... [2023-12-19 01:30:13,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5048f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:30:13, skipping insertion in model container [2023-12-19 01:30:13,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:12" (2/3) ... [2023-12-19 01:30:13,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5048f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:30:13, skipping insertion in model container [2023-12-19 01:30:13,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:30:13" (3/3) ... [2023-12-19 01:30:13,904 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2023-12-19 01:30:13,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:30:13,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:30:13,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:30:13,975 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;@5596e6c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:30:13,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:30:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 196 states have internal predecessors, (321), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 01:30:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:30:13,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:13,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:13,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:13,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 330085048, now seen corresponding path program 1 times [2023-12-19 01:30:13,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772751068] [2023-12-19 01:30:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:13,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:14,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:14,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772751068] [2023-12-19 01:30:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772751068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:14,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:14,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505061859] [2023-12-19 01:30:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:14,267 INFO L87 Difference]: Start difference. First operand has 227 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 196 states have internal predecessors, (321), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:14,637 INFO L93 Difference]: Finished difference Result 503 states and 818 transitions. [2023-12-19 01:30:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:14,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-19 01:30:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:14,656 INFO L225 Difference]: With dead ends: 503 [2023-12-19 01:30:14,656 INFO L226 Difference]: Without dead ends: 285 [2023-12-19 01:30:14,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:14,667 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 430 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:14,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 433 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-19 01:30:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2023-12-19 01:30:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 238 states have (on average 1.5210084033613445) internal successors, (362), 242 states have internal predecessors, (362), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-12-19 01:30:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 422 transitions. [2023-12-19 01:30:14,754 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 422 transitions. Word has length 37 [2023-12-19 01:30:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:14,755 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 422 transitions. [2023-12-19 01:30:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 422 transitions. [2023-12-19 01:30:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:30:14,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:14,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:14,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:30:14,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:14,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash -595157381, now seen corresponding path program 1 times [2023-12-19 01:30:14,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:14,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830941703] [2023-12-19 01:30:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:14,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:30:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830941703] [2023-12-19 01:30:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830941703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807881638] [2023-12-19 01:30:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:14,870 INFO L87 Difference]: Start difference. First operand 279 states and 422 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:15,117 INFO L93 Difference]: Finished difference Result 513 states and 766 transitions. [2023-12-19 01:30:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-19 01:30:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:15,121 INFO L225 Difference]: With dead ends: 513 [2023-12-19 01:30:15,121 INFO L226 Difference]: Without dead ends: 402 [2023-12-19 01:30:15,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:15,122 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 443 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:15,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 425 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-19 01:30:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 379. [2023-12-19 01:30:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 325 states have (on average 1.476923076923077) internal successors, (480), 330 states have internal predecessors, (480), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (46), 34 states have call predecessors, (46), 34 states have call successors, (46) [2023-12-19 01:30:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 562 transitions. [2023-12-19 01:30:15,167 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 562 transitions. Word has length 38 [2023-12-19 01:30:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:15,168 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 562 transitions. [2023-12-19 01:30:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 562 transitions. [2023-12-19 01:30:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:30:15,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:15,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:30:15,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:15,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1757828978, now seen corresponding path program 1 times [2023-12-19 01:30:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922716855] [2023-12-19 01:30:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:30:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922716855] [2023-12-19 01:30:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922716855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:15,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:15,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419301763] [2023-12-19 01:30:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:15,277 INFO L87 Difference]: Start difference. First operand 379 states and 562 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:15,535 INFO L93 Difference]: Finished difference Result 799 states and 1143 transitions. [2023-12-19 01:30:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-19 01:30:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:15,539 INFO L225 Difference]: With dead ends: 799 [2023-12-19 01:30:15,539 INFO L226 Difference]: Without dead ends: 588 [2023-12-19 01:30:15,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:15,543 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 194 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 579 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-19 01:30:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 484. [2023-12-19 01:30:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 418 states have (on average 1.4569377990430623) internal successors, (609), 425 states have internal predecessors, (609), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2023-12-19 01:30:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 703 transitions. [2023-12-19 01:30:15,585 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 703 transitions. Word has length 39 [2023-12-19 01:30:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:15,585 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 703 transitions. [2023-12-19 01:30:15,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 703 transitions. [2023-12-19 01:30:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:30:15,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:15,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:30:15,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:15,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 586677091, now seen corresponding path program 1 times [2023-12-19 01:30:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:15,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24890973] [2023-12-19 01:30:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:30:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:30:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:30:15,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24890973] [2023-12-19 01:30:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24890973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:15,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:15,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894964336] [2023-12-19 01:30:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:15,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:15,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:15,705 INFO L87 Difference]: Start difference. First operand 484 states and 703 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:15,950 INFO L93 Difference]: Finished difference Result 1000 states and 1420 transitions. [2023-12-19 01:30:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-19 01:30:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:15,954 INFO L225 Difference]: With dead ends: 1000 [2023-12-19 01:30:15,954 INFO L226 Difference]: Without dead ends: 684 [2023-12-19 01:30:15,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:15,961 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 179 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:15,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 623 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-19 01:30:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 650. [2023-12-19 01:30:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 560 states have (on average 1.4017857142857142) internal successors, (785), 569 states have internal predecessors, (785), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2023-12-19 01:30:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 917 transitions. [2023-12-19 01:30:15,990 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 917 transitions. Word has length 54 [2023-12-19 01:30:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:15,991 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 917 transitions. [2023-12-19 01:30:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 917 transitions. [2023-12-19 01:30:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:30:15,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:15,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:15,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:30:15,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:15,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1504425029, now seen corresponding path program 1 times [2023-12-19 01:30:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395001557] [2023-12-19 01:30:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:30:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:30:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:30:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395001557] [2023-12-19 01:30:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395001557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:16,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918356943] [2023-12-19 01:30:16,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:16,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:16,069 INFO L87 Difference]: Start difference. First operand 650 states and 917 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:16,300 INFO L93 Difference]: Finished difference Result 1229 states and 1696 transitions. [2023-12-19 01:30:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-19 01:30:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:16,306 INFO L225 Difference]: With dead ends: 1229 [2023-12-19 01:30:16,306 INFO L226 Difference]: Without dead ends: 827 [2023-12-19 01:30:16,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:16,308 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 429 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:16,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 437 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:16,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-19 01:30:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 778. [2023-12-19 01:30:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 672 states have (on average 1.369047619047619) internal successors, (920), 683 states have internal predecessors, (920), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2023-12-19 01:30:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1074 transitions. [2023-12-19 01:30:16,370 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1074 transitions. Word has length 59 [2023-12-19 01:30:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:16,371 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1074 transitions. [2023-12-19 01:30:16,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1074 transitions. [2023-12-19 01:30:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:30:16,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:16,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:30:16,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:16,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 732425990, now seen corresponding path program 1 times [2023-12-19 01:30:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230248504] [2023-12-19 01:30:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230248504] [2023-12-19 01:30:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230248504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:16,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:30:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514683844] [2023-12-19 01:30:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:30:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:30:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:16,478 INFO L87 Difference]: Start difference. First operand 778 states and 1074 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:16,773 INFO L93 Difference]: Finished difference Result 1264 states and 1736 transitions. [2023-12-19 01:30:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:30:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:16,777 INFO L225 Difference]: With dead ends: 1264 [2023-12-19 01:30:16,777 INFO L226 Difference]: Without dead ends: 726 [2023-12-19 01:30:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:16,778 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 131 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 743 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:30:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-19 01:30:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 653. [2023-12-19 01:30:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 564 states have (on average 1.3705673758865249) internal successors, (773), 574 states have internal predecessors, (773), 54 states have call successors, (54), 29 states have call predecessors, (54), 33 states have return successors, (72), 50 states have call predecessors, (72), 52 states have call successors, (72) [2023-12-19 01:30:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 899 transitions. [2023-12-19 01:30:16,820 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 899 transitions. Word has length 60 [2023-12-19 01:30:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:16,820 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 899 transitions. [2023-12-19 01:30:16,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 899 transitions. [2023-12-19 01:30:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:30:16,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:16,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:30:16,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:16,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1764901690, now seen corresponding path program 1 times [2023-12-19 01:30:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467431416] [2023-12-19 01:30:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:16,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:30:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467431416] [2023-12-19 01:30:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467431416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111356362] [2023-12-19 01:30:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:16,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:16,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:30:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:16,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:30:17,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:17,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:30:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111356362] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:30:17,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:30:17,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909348849] [2023-12-19 01:30:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:17,183 INFO L87 Difference]: Start difference. First operand 653 states and 899 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:17,294 INFO L93 Difference]: Finished difference Result 702 states and 960 transitions. [2023-12-19 01:30:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:30:17,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-19 01:30:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:17,297 INFO L225 Difference]: With dead ends: 702 [2023-12-19 01:30:17,297 INFO L226 Difference]: Without dead ends: 699 [2023-12-19 01:30:17,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:30:17,298 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 588 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:17,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 383 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:30:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-19 01:30:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 652. [2023-12-19 01:30:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 564 states have (on average 1.3670212765957446) internal successors, (771), 573 states have internal predecessors, (771), 53 states have call successors, (53), 29 states have call predecessors, (53), 33 states have return successors, (72), 50 states have call predecessors, (72), 52 states have call successors, (72) [2023-12-19 01:30:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 896 transitions. [2023-12-19 01:30:17,322 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 896 transitions. Word has length 60 [2023-12-19 01:30:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:17,322 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 896 transitions. [2023-12-19 01:30:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 896 transitions. [2023-12-19 01:30:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:30:17,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:17,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:17,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:17,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1121811496, now seen corresponding path program 1 times [2023-12-19 01:30:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774169308] [2023-12-19 01:30:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:30:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774169308] [2023-12-19 01:30:17,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774169308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057647224] [2023-12-19 01:30:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:17,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:17,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:17,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:17,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:30:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:17,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:30:17,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:17,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:30:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057647224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:30:17,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:30:17,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:30:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760465738] [2023-12-19 01:30:17,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:30:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:30:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:30:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:30:17,928 INFO L87 Difference]: Start difference. First operand 652 states and 896 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:30:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:18,641 INFO L93 Difference]: Finished difference Result 1888 states and 2548 transitions. [2023-12-19 01:30:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:30:18,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-19 01:30:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:18,646 INFO L225 Difference]: With dead ends: 1888 [2023-12-19 01:30:18,646 INFO L226 Difference]: Without dead ends: 1490 [2023-12-19 01:30:18,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:30:18,649 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 647 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:18,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1765 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2023-12-19 01:30:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 981. [2023-12-19 01:30:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 856 states have (on average 1.3376168224299065) internal successors, (1145), 872 states have internal predecessors, (1145), 72 states have call successors, (72), 42 states have call predecessors, (72), 51 states have return successors, (103), 67 states have call predecessors, (103), 71 states have call successors, (103) [2023-12-19 01:30:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1320 transitions. [2023-12-19 01:30:18,693 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1320 transitions. Word has length 61 [2023-12-19 01:30:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:18,693 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1320 transitions. [2023-12-19 01:30:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:30:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1320 transitions. [2023-12-19 01:30:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:30:18,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:18,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:18,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:18,902 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,SelfDestructingSolverStorable7 [2023-12-19 01:30:18,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1746083503, now seen corresponding path program 1 times [2023-12-19 01:30:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:18,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429246644] [2023-12-19 01:30:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:30:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:30:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:30:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:18,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429246644] [2023-12-19 01:30:18,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429246644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:18,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230854198] [2023-12-19 01:30:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:18,984 INFO L87 Difference]: Start difference. First operand 981 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:30:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:19,182 INFO L93 Difference]: Finished difference Result 1615 states and 2143 transitions. [2023-12-19 01:30:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-19 01:30:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:19,187 INFO L225 Difference]: With dead ends: 1615 [2023-12-19 01:30:19,187 INFO L226 Difference]: Without dead ends: 950 [2023-12-19 01:30:19,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:19,189 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 442 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:19,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 453 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-19 01:30:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 873. [2023-12-19 01:30:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 761 states have (on average 1.3363994743758212) internal successors, (1017), 777 states have internal predecessors, (1017), 65 states have call successors, (65), 37 states have call predecessors, (65), 45 states have return successors, (92), 59 states have call predecessors, (92), 64 states have call successors, (92) [2023-12-19 01:30:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1174 transitions. [2023-12-19 01:30:19,221 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1174 transitions. Word has length 78 [2023-12-19 01:30:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:19,221 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1174 transitions. [2023-12-19 01:30:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:30:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1174 transitions. [2023-12-19 01:30:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:19,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:19,227 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] [2023-12-19 01:30:19,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:30:19,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:19,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash 748720928, now seen corresponding path program 1 times [2023-12-19 01:30:19,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:19,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395475233] [2023-12-19 01:30:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:19,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395475233] [2023-12-19 01:30:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395475233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:30:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352356398] [2023-12-19 01:30:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:30:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:30:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:19,288 INFO L87 Difference]: Start difference. First operand 873 states and 1174 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:19,822 INFO L93 Difference]: Finished difference Result 1077 states and 1501 transitions. [2023-12-19 01:30:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:19,827 INFO L225 Difference]: With dead ends: 1077 [2023-12-19 01:30:19,827 INFO L226 Difference]: Without dead ends: 923 [2023-12-19 01:30:19,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:30:19,828 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 457 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:19,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 480 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:30:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-19 01:30:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 873. [2023-12-19 01:30:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 761 states have (on average 1.3350854139290407) internal successors, (1016), 777 states have internal predecessors, (1016), 65 states have call successors, (65), 37 states have call predecessors, (65), 45 states have return successors, (92), 59 states have call predecessors, (92), 64 states have call successors, (92) [2023-12-19 01:30:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1173 transitions. [2023-12-19 01:30:19,865 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1173 transitions. Word has length 81 [2023-12-19 01:30:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1173 transitions. [2023-12-19 01:30:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1173 transitions. [2023-12-19 01:30:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:19,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:19,867 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] [2023-12-19 01:30:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:30:19,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:19,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1716071582, now seen corresponding path program 1 times [2023-12-19 01:30:19,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:19,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316127922] [2023-12-19 01:30:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316127922] [2023-12-19 01:30:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316127922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:30:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183290471] [2023-12-19 01:30:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:19,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:30:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:30:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:19,964 INFO L87 Difference]: Start difference. First operand 873 states and 1173 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:20,807 INFO L93 Difference]: Finished difference Result 1280 states and 1827 transitions. [2023-12-19 01:30:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:30:20,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:20,812 INFO L225 Difference]: With dead ends: 1280 [2023-12-19 01:30:20,812 INFO L226 Difference]: Without dead ends: 1128 [2023-12-19 01:30:20,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:20,813 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 735 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:20,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 668 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:30:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2023-12-19 01:30:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1029. [2023-12-19 01:30:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 897 states have (on average 1.3734671125975473) internal successors, (1232), 914 states have internal predecessors, (1232), 78 states have call successors, (78), 43 states have call predecessors, (78), 52 states have return successors, (108), 72 states have call predecessors, (108), 77 states have call successors, (108) [2023-12-19 01:30:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1418 transitions. [2023-12-19 01:30:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1418 transitions. Word has length 81 [2023-12-19 01:30:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:20,857 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1418 transitions. [2023-12-19 01:30:20,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1418 transitions. [2023-12-19 01:30:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:20,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:20,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:30:20,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 298272478, now seen corresponding path program 1 times [2023-12-19 01:30:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:20,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589259888] [2023-12-19 01:30:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589259888] [2023-12-19 01:30:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589259888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:20,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:20,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167363990] [2023-12-19 01:30:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:20,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:20,959 INFO L87 Difference]: Start difference. First operand 1029 states and 1418 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:22,108 INFO L93 Difference]: Finished difference Result 1645 states and 2401 transitions. [2023-12-19 01:30:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:30:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:22,113 INFO L225 Difference]: With dead ends: 1645 [2023-12-19 01:30:22,113 INFO L226 Difference]: Without dead ends: 1337 [2023-12-19 01:30:22,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:30:22,115 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 748 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:22,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1136 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:30:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-12-19 01:30:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1174. [2023-12-19 01:30:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1022 states have (on average 1.3953033268101762) internal successors, (1426), 1040 states have internal predecessors, (1426), 91 states have call successors, (91), 49 states have call predecessors, (91), 59 states have return successors, (123), 86 states have call predecessors, (123), 90 states have call successors, (123) [2023-12-19 01:30:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1640 transitions. [2023-12-19 01:30:22,162 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1640 transitions. Word has length 81 [2023-12-19 01:30:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:22,162 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1640 transitions. [2023-12-19 01:30:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1640 transitions. [2023-12-19 01:30:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:22,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:22,164 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] [2023-12-19 01:30:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:30:22,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -917881248, now seen corresponding path program 1 times [2023-12-19 01:30:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621110972] [2023-12-19 01:30:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:22,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:22,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621110972] [2023-12-19 01:30:22,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621110972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:22,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:22,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096467673] [2023-12-19 01:30:22,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:22,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:22,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:22,252 INFO L87 Difference]: Start difference. First operand 1174 states and 1640 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:22,871 INFO L93 Difference]: Finished difference Result 1792 states and 2633 transitions. [2023-12-19 01:30:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:22,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:22,876 INFO L225 Difference]: With dead ends: 1792 [2023-12-19 01:30:22,876 INFO L226 Difference]: Without dead ends: 1339 [2023-12-19 01:30:22,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:22,878 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 677 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:22,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 562 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-12-19 01:30:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1174. [2023-12-19 01:30:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1022 states have (on average 1.3923679060665362) internal successors, (1423), 1040 states have internal predecessors, (1423), 91 states have call successors, (91), 49 states have call predecessors, (91), 59 states have return successors, (123), 86 states have call predecessors, (123), 90 states have call successors, (123) [2023-12-19 01:30:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1637 transitions. [2023-12-19 01:30:22,944 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1637 transitions. Word has length 81 [2023-12-19 01:30:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:22,944 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1637 transitions. [2023-12-19 01:30:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1637 transitions. [2023-12-19 01:30:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:22,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:22,946 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] [2023-12-19 01:30:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:30:22,946 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1690906210, now seen corresponding path program 1 times [2023-12-19 01:30:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679653388] [2023-12-19 01:30:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679653388] [2023-12-19 01:30:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679653388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:23,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867960428] [2023-12-19 01:30:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:23,060 INFO L87 Difference]: Start difference. First operand 1174 states and 1637 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:23,745 INFO L93 Difference]: Finished difference Result 1788 states and 2616 transitions. [2023-12-19 01:30:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:23,750 INFO L225 Difference]: With dead ends: 1788 [2023-12-19 01:30:23,750 INFO L226 Difference]: Without dead ends: 1335 [2023-12-19 01:30:23,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:23,752 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 585 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 680 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2023-12-19 01:30:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1174. [2023-12-19 01:30:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1022 states have (on average 1.3894324853228963) internal successors, (1420), 1040 states have internal predecessors, (1420), 91 states have call successors, (91), 49 states have call predecessors, (91), 59 states have return successors, (123), 86 states have call predecessors, (123), 90 states have call successors, (123) [2023-12-19 01:30:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1634 transitions. [2023-12-19 01:30:23,824 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1634 transitions. Word has length 81 [2023-12-19 01:30:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:23,824 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1634 transitions. [2023-12-19 01:30:23,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1634 transitions. [2023-12-19 01:30:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:23,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:23,826 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] [2023-12-19 01:30:23,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:30:23,826 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:23,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1636513312, now seen corresponding path program 1 times [2023-12-19 01:30:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851913489] [2023-12-19 01:30:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:23,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:23,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851913489] [2023-12-19 01:30:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851913489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:23,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072516744] [2023-12-19 01:30:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:23,930 INFO L87 Difference]: Start difference. First operand 1174 states and 1634 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:25,195 INFO L93 Difference]: Finished difference Result 2282 states and 3371 transitions. [2023-12-19 01:30:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:25,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:25,204 INFO L225 Difference]: With dead ends: 2282 [2023-12-19 01:30:25,204 INFO L226 Difference]: Without dead ends: 1829 [2023-12-19 01:30:25,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:25,207 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 882 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:25,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1127 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:30:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-12-19 01:30:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1470. [2023-12-19 01:30:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1280 states have (on average 1.41953125) internal successors, (1817), 1300 states have internal predecessors, (1817), 115 states have call successors, (115), 61 states have call predecessors, (115), 73 states have return successors, (155), 112 states have call predecessors, (155), 114 states have call successors, (155) [2023-12-19 01:30:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2087 transitions. [2023-12-19 01:30:25,285 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2087 transitions. Word has length 81 [2023-12-19 01:30:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:25,285 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2087 transitions. [2023-12-19 01:30:25,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2087 transitions. [2023-12-19 01:30:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:25,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:25,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:25,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:30:25,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:25,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1219116706, now seen corresponding path program 1 times [2023-12-19 01:30:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195948316] [2023-12-19 01:30:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:25,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195948316] [2023-12-19 01:30:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195948316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:25,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:25,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839479326] [2023-12-19 01:30:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:25,418 INFO L87 Difference]: Start difference. First operand 1470 states and 2087 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:26,735 INFO L93 Difference]: Finished difference Result 3372 states and 5054 transitions. [2023-12-19 01:30:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:26,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:26,744 INFO L225 Difference]: With dead ends: 3372 [2023-12-19 01:30:26,744 INFO L226 Difference]: Without dead ends: 2623 [2023-12-19 01:30:26,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:26,747 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 845 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:26,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1123 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:30:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2023-12-19 01:30:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2035. [2023-12-19 01:30:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1771 states have (on average 1.4505928853754941) internal successors, (2569), 1795 states have internal predecessors, (2569), 161 states have call successors, (161), 85 states have call predecessors, (161), 101 states have return successors, (223), 162 states have call predecessors, (223), 160 states have call successors, (223) [2023-12-19 01:30:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2953 transitions. [2023-12-19 01:30:26,850 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2953 transitions. Word has length 81 [2023-12-19 01:30:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:26,850 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2953 transitions. [2023-12-19 01:30:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2953 transitions. [2023-12-19 01:30:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:26,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:26,852 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] [2023-12-19 01:30:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:30:26,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1898388960, now seen corresponding path program 1 times [2023-12-19 01:30:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171152417] [2023-12-19 01:30:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171152417] [2023-12-19 01:30:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171152417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:26,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200543111] [2023-12-19 01:30:26,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:26,970 INFO L87 Difference]: Start difference. First operand 2035 states and 2953 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:27,511 INFO L93 Difference]: Finished difference Result 3722 states and 5601 transitions. [2023-12-19 01:30:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:27,519 INFO L225 Difference]: With dead ends: 3722 [2023-12-19 01:30:27,519 INFO L226 Difference]: Without dead ends: 2408 [2023-12-19 01:30:27,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:27,523 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 593 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:27,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 678 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:30:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2023-12-19 01:30:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2035. [2023-12-19 01:30:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1771 states have (on average 1.445511010728402) internal successors, (2560), 1795 states have internal predecessors, (2560), 161 states have call successors, (161), 85 states have call predecessors, (161), 101 states have return successors, (223), 162 states have call predecessors, (223), 160 states have call successors, (223) [2023-12-19 01:30:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2944 transitions. [2023-12-19 01:30:27,655 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2944 transitions. Word has length 81 [2023-12-19 01:30:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:27,656 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2944 transitions. [2023-12-19 01:30:27,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2944 transitions. [2023-12-19 01:30:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:27,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:27,659 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] [2023-12-19 01:30:27,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:30:27,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:27,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:27,660 INFO L85 PathProgramCache]: Analyzing trace with hash -435003678, now seen corresponding path program 1 times [2023-12-19 01:30:27,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:27,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681502973] [2023-12-19 01:30:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:27,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681502973] [2023-12-19 01:30:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681502973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:27,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:27,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777358743] [2023-12-19 01:30:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:27,761 INFO L87 Difference]: Start difference. First operand 2035 states and 2944 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:29,008 INFO L93 Difference]: Finished difference Result 5325 states and 8026 transitions. [2023-12-19 01:30:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:29,033 INFO L225 Difference]: With dead ends: 5325 [2023-12-19 01:30:29,034 INFO L226 Difference]: Without dead ends: 4011 [2023-12-19 01:30:29,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:29,038 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 768 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:29,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1127 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:30:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2023-12-19 01:30:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 3193. [2023-12-19 01:30:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 2785 states have (on average 1.4736086175942549) internal successors, (4104), 2817 states have internal predecessors, (4104), 249 states have call successors, (249), 133 states have call predecessors, (249), 157 states have return successors, (373), 258 states have call predecessors, (373), 248 states have call successors, (373) [2023-12-19 01:30:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4726 transitions. [2023-12-19 01:30:29,198 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4726 transitions. Word has length 81 [2023-12-19 01:30:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:29,199 INFO L495 AbstractCegarLoop]: Abstraction has 3193 states and 4726 transitions. [2023-12-19 01:30:29,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4726 transitions. [2023-12-19 01:30:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:29,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:29,202 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] [2023-12-19 01:30:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:30:29,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:29,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -233179744, now seen corresponding path program 1 times [2023-12-19 01:30:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:29,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479610101] [2023-12-19 01:30:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:29,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:29,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479610101] [2023-12-19 01:30:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479610101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:29,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:29,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142644181] [2023-12-19 01:30:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:29,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:29,300 INFO L87 Difference]: Start difference. First operand 3193 states and 4726 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:30,614 INFO L93 Difference]: Finished difference Result 9281 states and 14150 transitions. [2023-12-19 01:30:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:30,649 INFO L225 Difference]: With dead ends: 9281 [2023-12-19 01:30:30,649 INFO L226 Difference]: Without dead ends: 6809 [2023-12-19 01:30:30,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:30,662 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 717 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:30,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1127 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:30:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2023-12-19 01:30:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 5506. [2023-12-19 01:30:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 4818 states have (on average 1.4948111249481113) internal successors, (7202), 4866 states have internal predecessors, (7202), 417 states have call successors, (417), 229 states have call predecessors, (417), 269 states have return successors, (719), 442 states have call predecessors, (719), 416 states have call successors, (719) [2023-12-19 01:30:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 8338 transitions. [2023-12-19 01:30:31,071 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 8338 transitions. Word has length 81 [2023-12-19 01:30:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:31,072 INFO L495 AbstractCegarLoop]: Abstraction has 5506 states and 8338 transitions. [2023-12-19 01:30:31,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 8338 transitions. [2023-12-19 01:30:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:30:31,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:31,077 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] [2023-12-19 01:30:31,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:30:31,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:31,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash 327520034, now seen corresponding path program 1 times [2023-12-19 01:30:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582602697] [2023-12-19 01:30:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:31,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:31,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582602697] [2023-12-19 01:30:31,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582602697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:31,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:31,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:31,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132522617] [2023-12-19 01:30:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:31,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:31,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:31,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:31,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:31,185 INFO L87 Difference]: Start difference. First operand 5506 states and 8338 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:32,651 INFO L93 Difference]: Finished difference Result 14657 states and 22650 transitions. [2023-12-19 01:30:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:30:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-19 01:30:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:32,690 INFO L225 Difference]: With dead ends: 14657 [2023-12-19 01:30:32,690 INFO L226 Difference]: Without dead ends: 9873 [2023-12-19 01:30:32,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:30:32,707 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 735 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:32,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 854 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:30:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2023-12-19 01:30:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 8030. [2023-12-19 01:30:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 7026 states have (on average 1.4898946769143182) internal successors, (10468), 7107 states have internal predecessors, (10468), 615 states have call successors, (615), 331 states have call predecessors, (615), 387 states have return successors, (999), 623 states have call predecessors, (999), 614 states have call successors, (999) [2023-12-19 01:30:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 12082 transitions. [2023-12-19 01:30:33,138 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 12082 transitions. Word has length 81 [2023-12-19 01:30:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:33,139 INFO L495 AbstractCegarLoop]: Abstraction has 8030 states and 12082 transitions. [2023-12-19 01:30:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:30:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 12082 transitions. [2023-12-19 01:30:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:30:33,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:33,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:33,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:30:33,150 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:33,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash -557587446, now seen corresponding path program 1 times [2023-12-19 01:30:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368958156] [2023-12-19 01:30:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:30:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:30:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:30:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:30:33,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368958156] [2023-12-19 01:30:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368958156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:33,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317556268] [2023-12-19 01:30:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:33,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:33,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:33,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:30:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:33,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:30:33,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317556268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:33,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:33,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:30:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222853861] [2023-12-19 01:30:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:33,334 INFO L87 Difference]: Start difference. First operand 8030 states and 12082 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:30:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:33,623 INFO L93 Difference]: Finished difference Result 8315 states and 12440 transitions. [2023-12-19 01:30:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:33,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-19 01:30:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:33,641 INFO L225 Difference]: With dead ends: 8315 [2023-12-19 01:30:33,642 INFO L226 Difference]: Without dead ends: 7320 [2023-12-19 01:30:33,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:33,646 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 55 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:33,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 624 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2023-12-19 01:30:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7320. [2023-12-19 01:30:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7320 states, 6403 states have (on average 1.5099172263001719) internal successors, (9668), 6469 states have internal predecessors, (9668), 568 states have call successors, (568), 300 states have call predecessors, (568), 348 states have return successors, (925), 582 states have call predecessors, (925), 568 states have call successors, (925) [2023-12-19 01:30:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 11161 transitions. [2023-12-19 01:30:34,004 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 11161 transitions. Word has length 92 [2023-12-19 01:30:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:34,004 INFO L495 AbstractCegarLoop]: Abstraction has 7320 states and 11161 transitions. [2023-12-19 01:30:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:30:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 11161 transitions. [2023-12-19 01:30:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:30:34,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:34,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:34,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 01:30:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:34,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:34,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 194310799, now seen corresponding path program 1 times [2023-12-19 01:30:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301719789] [2023-12-19 01:30:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:30:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:30:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:30:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301719789] [2023-12-19 01:30:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301719789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535327116] [2023-12-19 01:30:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:34,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:34,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:30:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:34,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 01:30:34,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535327116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:34,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:34,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097787288] [2023-12-19 01:30:34,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:34,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:34,512 INFO L87 Difference]: Start difference. First operand 7320 states and 11161 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:30:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:35,142 INFO L93 Difference]: Finished difference Result 21729 states and 33319 transitions. [2023-12-19 01:30:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-19 01:30:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:35,202 INFO L225 Difference]: With dead ends: 21729 [2023-12-19 01:30:35,202 INFO L226 Difference]: Without dead ends: 14421 [2023-12-19 01:30:35,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:35,228 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 208 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:35,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14421 states. [2023-12-19 01:30:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14421 to 14369. [2023-12-19 01:30:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 12594 states have (on average 1.5062728283309512) internal successors, (18970), 12725 states have internal predecessors, (18970), 1080 states have call successors, (1080), 598 states have call predecessors, (1080), 694 states have return successors, (1763), 1077 states have call predecessors, (1763), 1080 states have call successors, (1763) [2023-12-19 01:30:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 21813 transitions. [2023-12-19 01:30:35,900 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 21813 transitions. Word has length 131 [2023-12-19 01:30:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:35,900 INFO L495 AbstractCegarLoop]: Abstraction has 14369 states and 21813 transitions. [2023-12-19 01:30:35,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:30:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 21813 transitions. [2023-12-19 01:30:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:30:35,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:35,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:35,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 01:30:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:36,131 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:36,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1103608751, now seen corresponding path program 1 times [2023-12-19 01:30:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:36,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595963143] [2023-12-19 01:30:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:36,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:30:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:30:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:30:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595963143] [2023-12-19 01:30:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595963143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615672128] [2023-12-19 01:30:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:36,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:36,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:36,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:36,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:30:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:36,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:30:36,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615672128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:36,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:36,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147286004] [2023-12-19 01:30:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:36,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:36,364 INFO L87 Difference]: Start difference. First operand 14369 states and 21813 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:30:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:37,716 INFO L93 Difference]: Finished difference Result 42772 states and 65329 transitions. [2023-12-19 01:30:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-19 01:30:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:37,782 INFO L225 Difference]: With dead ends: 42772 [2023-12-19 01:30:37,783 INFO L226 Difference]: Without dead ends: 28415 [2023-12-19 01:30:37,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:37,812 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 198 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:37,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28415 states. [2023-12-19 01:30:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28415 to 28313. [2023-12-19 01:30:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28313 states, 24824 states have (on average 1.501450209474702) internal successors, (37272), 25085 states have internal predecessors, (37272), 2102 states have call successors, (2102), 1194 states have call predecessors, (2102), 1386 states have return successors, (3437), 2065 states have call predecessors, (3437), 2102 states have call successors, (3437) [2023-12-19 01:30:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28313 states to 28313 states and 42811 transitions. [2023-12-19 01:30:39,143 INFO L78 Accepts]: Start accepts. Automaton has 28313 states and 42811 transitions. Word has length 131 [2023-12-19 01:30:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 28313 states and 42811 transitions. [2023-12-19 01:30:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:30:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 28313 states and 42811 transitions. [2023-12-19 01:30:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:30:39,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:39,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:39,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:39,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 01:30:39,402 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:39,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1911722801, now seen corresponding path program 1 times [2023-12-19 01:30:39,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523214582] [2023-12-19 01:30:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:30:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:30:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 01:30:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523214582] [2023-12-19 01:30:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523214582] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793558175] [2023-12-19 01:30:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:39,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:39,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:39,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:30:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:39,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:30:39,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793558175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:30:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732448461] [2023-12-19 01:30:39,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:39,659 INFO L87 Difference]: Start difference. First operand 28313 states and 42811 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 01:30:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:42,304 INFO L93 Difference]: Finished difference Result 83871 states and 128136 transitions. [2023-12-19 01:30:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-19 01:30:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:42,522 INFO L225 Difference]: With dead ends: 83871 [2023-12-19 01:30:42,523 INFO L226 Difference]: Without dead ends: 55571 [2023-12-19 01:30:42,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:42,585 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 217 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:42,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 659 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55571 states. [2023-12-19 01:30:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55571 to 55571. [2023-12-19 01:30:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55571 states, 48755 states have (on average 1.4941236796226027) internal successors, (72846), 49209 states have internal predecessors, (72846), 4055 states have call successors, (4055), 2376 states have call predecessors, (4055), 2760 states have return successors, (7476), 4049 states have call predecessors, (7476), 4055 states have call successors, (7476) [2023-12-19 01:30:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55571 states to 55571 states and 84377 transitions. [2023-12-19 01:30:45,770 INFO L78 Accepts]: Start accepts. Automaton has 55571 states and 84377 transitions. Word has length 131 [2023-12-19 01:30:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:45,770 INFO L495 AbstractCegarLoop]: Abstraction has 55571 states and 84377 transitions. [2023-12-19 01:30:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 01:30:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55571 states and 84377 transitions. [2023-12-19 01:30:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 01:30:45,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:45,873 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:45,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:46,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:46,080 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:46,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1716374982, now seen corresponding path program 1 times [2023-12-19 01:30:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742353235] [2023-12-19 01:30:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:30:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 01:30:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-19 01:30:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 01:30:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742353235] [2023-12-19 01:30:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742353235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112664578] [2023-12-19 01:30:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:46,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:46,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:46,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:30:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:46,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:30:46,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112664578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198080886] [2023-12-19 01:30:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:46,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:46,550 INFO L87 Difference]: Start difference. First operand 55571 states and 84377 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:30:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:51,332 INFO L93 Difference]: Finished difference Result 164585 states and 251830 transitions. [2023-12-19 01:30:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:51,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2023-12-19 01:30:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:51,752 INFO L225 Difference]: With dead ends: 164585 [2023-12-19 01:30:51,752 INFO L226 Difference]: Without dead ends: 109033 [2023-12-19 01:30:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:51,854 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 146 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109033 states. [2023-12-19 01:30:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109033 to 108631. [2023-12-19 01:30:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108631 states, 95263 states have (on average 1.488909650126492) internal successors, (141838), 96169 states have internal predecessors, (141838), 7871 states have call successors, (7871), 4728 states have call predecessors, (7871), 5496 states have return successors, (14528), 7797 states have call predecessors, (14528), 7871 states have call successors, (14528) [2023-12-19 01:30:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108631 states to 108631 states and 164237 transitions. [2023-12-19 01:30:57,768 INFO L78 Accepts]: Start accepts. Automaton has 108631 states and 164237 transitions. Word has length 169 [2023-12-19 01:30:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:57,769 INFO L495 AbstractCegarLoop]: Abstraction has 108631 states and 164237 transitions. [2023-12-19 01:30:57,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:30:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 108631 states and 164237 transitions. [2023-12-19 01:30:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 01:30:57,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:57,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:57,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 01:30:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:58,198 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:58,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1699946437, now seen corresponding path program 1 times [2023-12-19 01:30:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335921310] [2023-12-19 01:30:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:30:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:30:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:30:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:30:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:30:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:30:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-19 01:30:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 01:30:58,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335921310] [2023-12-19 01:30:58,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335921310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314622207] [2023-12-19 01:30:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:58,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:58,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:30:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:58,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:58,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-19 01:30:58,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:58,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314622207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:58,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:58,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286204610] [2023-12-19 01:30:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:58,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:58,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:58,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:58,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:58,757 INFO L87 Difference]: Start difference. First operand 108631 states and 164237 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:31:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:08,525 INFO L93 Difference]: Finished difference Result 323199 states and 492138 transitions. [2023-12-19 01:31:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2023-12-19 01:31:08,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:09,412 INFO L225 Difference]: With dead ends: 323199 [2023-12-19 01:31:09,413 INFO L226 Difference]: Without dead ends: 214587 [2023-12-19 01:31:09,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:09,784 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 149 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:09,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 436 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:31:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214587 states. [2023-12-19 01:31:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214587 to 213785. [2023-12-19 01:31:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213785 states, 187621 states have (on average 1.4836505508445217) internal successors, (278364), 189431 states have internal predecessors, (278364), 15245 states have call successors, (15245), 9382 states have call predecessors, (15245), 10918 states have return successors, (28232), 15035 states have call predecessors, (28232), 15245 states have call successors, (28232) [2023-12-19 01:31:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213785 states to 213785 states and 321841 transitions. [2023-12-19 01:31:21,126 INFO L78 Accepts]: Start accepts. Automaton has 213785 states and 321841 transitions. Word has length 169 [2023-12-19 01:31:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:21,126 INFO L495 AbstractCegarLoop]: Abstraction has 213785 states and 321841 transitions. [2023-12-19 01:31:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:31:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 213785 states and 321841 transitions. [2023-12-19 01:31:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-19 01:31:21,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:21,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:21,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 01:31:21,824 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:21,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1086893884, now seen corresponding path program 1 times [2023-12-19 01:31:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29734079] [2023-12-19 01:31:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-19 01:31:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-19 01:31:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 01:31:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:31:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 01:31:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:31:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 01:31:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-19 01:31:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 01:31:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29734079] [2023-12-19 01:31:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29734079] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408183022] [2023-12-19 01:31:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:21,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:31:21,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:31:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:22,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:22,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 01:31:22,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408183022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:22,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:31:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460848303] [2023-12-19 01:31:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:22,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:22,162 INFO L87 Difference]: Start difference. First operand 213785 states and 321841 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)