/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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:04:16,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:04:16,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:04:16,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:04:16,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:04:16,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:04:16,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:04:16,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:04:16,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:04:16,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:04:16,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:04:16,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:04:16,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:04:16,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:04:16,364 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:04:16,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:04:16,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:04:16,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:04:16,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:04:16,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:04:16,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:04:16,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:04:16,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:04:16,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:04:16,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:04:16,367 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:04:16,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:04:16,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:04:16,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:04:16,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:04:16,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:04:16,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:04:16,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:16,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:04:16,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:04:16,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:04:16,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:04:16,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:04:16,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:04:16,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:04:16,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:04:16,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:04:16,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:04:16,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:04:16,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:04:16,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:04:16,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:04:16,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:04:16,575 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:04:16,576 INFO L431 ainManager$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-2.c [2023-12-15 18:04:17,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:04:17,754 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:04:17,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2023-12-15 18:04:17,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a97c893/abc872075f0b42baa1728b61d80e1a08/FLAG6a6574938 [2023-12-15 18:04:17,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a97c893/abc872075f0b42baa1728b61d80e1a08 [2023-12-15 18:04:17,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:04:17,782 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:04:17,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:17,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:04:17,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:04:17,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:17" (1/1) ... [2023-12-15 18:04:17,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@107136b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:17, skipping insertion in model container [2023-12-15 18:04:17,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:04:17" (1/1) ... [2023-12-15 18:04:17,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:04:17,943 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-2.c[913,926] [2023-12-15 18:04:17,982 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-2.c[5977,5990] [2023-12-15 18:04:18,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:18,052 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:04:18,068 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-2.c[913,926] [2023-12-15 18:04:18,087 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-2.c[5977,5990] [2023-12-15 18:04:18,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:04:18,126 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:04:18,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18 WrapperNode [2023-12-15 18:04:18,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:04:18,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:18,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:04:18,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:04:18,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,177 INFO L138 Inliner]: procedures = 56, calls = 61, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 609 [2023-12-15 18:04:18,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:04:18,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:04:18,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:04:18,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:04:18,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,233 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:04:18,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:04:18,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:04:18,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:04:18,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:04:18,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (1/1) ... [2023-12-15 18:04:18,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:04:18,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:18,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:04:18,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:04:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:04:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:04:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:04:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:04:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:04:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:04:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:04:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:04:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:04:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:04:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:04:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:04:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:04:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:04:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:04:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:04:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:04:18,431 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:04:18,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:04:18,848 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:04:18,896 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:04:18,897 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-15 18:04:18,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:18 BoogieIcfgContainer [2023-12-15 18:04:18,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:04:18,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:04:18,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:04:18,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:04:18,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:04:17" (1/3) ... [2023-12-15 18:04:18,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3849d82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:18, skipping insertion in model container [2023-12-15 18:04:18,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:04:18" (2/3) ... [2023-12-15 18:04:18,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3849d82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:04:18, skipping insertion in model container [2023-12-15 18:04:18,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:04:18" (3/3) ... [2023-12-15 18:04:18,905 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2023-12-15 18:04:18,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:04:18,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:04:18,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:04:18,997 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;@61488a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:04:18,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:04:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 203 states have internal predecessors, (331), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 18:04:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:04:19,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:19,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:19,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:19,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1217203649, now seen corresponding path program 1 times [2023-12-15 18:04:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:19,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932791173] [2023-12-15 18:04:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:19,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:19,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932791173] [2023-12-15 18:04:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932791173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:19,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:19,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397397235] [2023-12-15 18:04:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:19,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:19,292 INFO L87 Difference]: Start difference. First operand has 235 states, 196 states have (on average 1.6887755102040816) internal successors, (331), 203 states have internal predecessors, (331), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:19,671 INFO L93 Difference]: Finished difference Result 518 states and 846 transitions. [2023-12-15 18:04:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-15 18:04:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:19,688 INFO L225 Difference]: With dead ends: 518 [2023-12-15 18:04:19,688 INFO L226 Difference]: Without dead ends: 292 [2023-12-15 18:04:19,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:19,699 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 443 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:19,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 453 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:04:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-15 18:04:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 286. [2023-12-15 18:04:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 243 states have (on average 1.5308641975308641) internal successors, (372), 248 states have internal predecessors, (372), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2023-12-15 18:04:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 434 transitions. [2023-12-15 18:04:19,749 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 434 transitions. Word has length 37 [2023-12-15 18:04:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:19,750 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 434 transitions. [2023-12-15 18:04:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 434 transitions. [2023-12-15 18:04:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:04:19,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:19,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:19,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:04:19,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:19,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1404925790, now seen corresponding path program 1 times [2023-12-15 18:04:19,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:19,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112979053] [2023-12-15 18:04:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:19,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:04:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112979053] [2023-12-15 18:04:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112979053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822970960] [2023-12-15 18:04:19,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:19,834 INFO L87 Difference]: Start difference. First operand 286 states and 434 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:20,074 INFO L93 Difference]: Finished difference Result 520 states and 778 transitions. [2023-12-15 18:04:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-15 18:04:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:20,077 INFO L225 Difference]: With dead ends: 520 [2023-12-15 18:04:20,077 INFO L226 Difference]: Without dead ends: 409 [2023-12-15 18:04:20,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:20,079 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 456 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:20,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 445 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-15 18:04:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2023-12-15 18:04:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 330 states have (on average 1.4848484848484849) internal successors, (490), 336 states have internal predecessors, (490), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (46), 34 states have call predecessors, (46), 34 states have call successors, (46) [2023-12-15 18:04:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 574 transitions. [2023-12-15 18:04:20,106 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 574 transitions. Word has length 38 [2023-12-15 18:04:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 574 transitions. [2023-12-15 18:04:20,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 574 transitions. [2023-12-15 18:04:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:04:20,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:20,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:20,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:04:20,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:20,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1083038728, now seen corresponding path program 1 times [2023-12-15 18:04:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:20,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952099674] [2023-12-15 18:04:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:04:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952099674] [2023-12-15 18:04:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952099674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:20,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049417866] [2023-12-15 18:04:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:20,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:20,188 INFO L87 Difference]: Start difference. First operand 386 states and 574 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:20,458 INFO L93 Difference]: Finished difference Result 806 states and 1155 transitions. [2023-12-15 18:04:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:20,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-15 18:04:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:20,461 INFO L225 Difference]: With dead ends: 806 [2023-12-15 18:04:20,461 INFO L226 Difference]: Without dead ends: 595 [2023-12-15 18:04:20,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:20,463 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 195 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:20,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 610 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-15 18:04:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 491. [2023-12-15 18:04:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 423 states have (on average 1.4633569739952719) internal successors, (619), 431 states have internal predecessors, (619), 44 states have call successors, (44), 22 states have call predecessors, (44), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2023-12-15 18:04:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 715 transitions. [2023-12-15 18:04:20,486 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 715 transitions. Word has length 39 [2023-12-15 18:04:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:20,487 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 715 transitions. [2023-12-15 18:04:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 18:04:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 715 transitions. [2023-12-15 18:04:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:04:20,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:20,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:04:20,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash -365158752, now seen corresponding path program 1 times [2023-12-15 18:04:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784636719] [2023-12-15 18:04:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:04:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:04:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:20,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784636719] [2023-12-15 18:04:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784636719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842925904] [2023-12-15 18:04:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:20,562 INFO L87 Difference]: Start difference. First operand 491 states and 715 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:20,790 INFO L93 Difference]: Finished difference Result 1007 states and 1432 transitions. [2023-12-15 18:04:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:20,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-15 18:04:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:20,794 INFO L225 Difference]: With dead ends: 1007 [2023-12-15 18:04:20,794 INFO L226 Difference]: Without dead ends: 691 [2023-12-15 18:04:20,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:20,799 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 180 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:20,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 657 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:04:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-15 18:04:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 657. [2023-12-15 18:04:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 565 states have (on average 1.407079646017699) internal successors, (795), 575 states have internal predecessors, (795), 58 states have call successors, (58), 30 states have call predecessors, (58), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2023-12-15 18:04:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 929 transitions. [2023-12-15 18:04:20,836 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 929 transitions. Word has length 54 [2023-12-15 18:04:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 929 transitions. [2023-12-15 18:04:20,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 929 transitions. [2023-12-15 18:04:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:04:20,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:20,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:04:20,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:20,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1923672539, now seen corresponding path program 1 times [2023-12-15 18:04:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291219456] [2023-12-15 18:04:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:04:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:04:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:04:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291219456] [2023-12-15 18:04:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291219456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:04:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075078117] [2023-12-15 18:04:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:04:20,922 INFO L87 Difference]: Start difference. First operand 657 states and 929 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:21,106 INFO L93 Difference]: Finished difference Result 1236 states and 1708 transitions. [2023-12-15 18:04:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:04:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-15 18:04:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:21,111 INFO L225 Difference]: With dead ends: 1236 [2023-12-15 18:04:21,111 INFO L226 Difference]: Without dead ends: 834 [2023-12-15 18:04:21,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:21,120 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 442 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:21,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 457 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:04:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-15 18:04:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 785. [2023-12-15 18:04:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 677 states have (on average 1.3737075332348596) internal successors, (930), 689 states have internal predecessors, (930), 66 states have call successors, (66), 36 states have call predecessors, (66), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2023-12-15 18:04:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1086 transitions. [2023-12-15 18:04:21,183 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1086 transitions. Word has length 59 [2023-12-15 18:04:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:21,183 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1086 transitions. [2023-12-15 18:04:21,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1086 transitions. [2023-12-15 18:04:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:21,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:21,185 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, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:21,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:04:21,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:21,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash -469151263, now seen corresponding path program 1 times [2023-12-15 18:04:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727170876] [2023-12-15 18:04:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 18:04:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727170876] [2023-12-15 18:04:21,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727170876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707648771] [2023-12-15 18:04:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:21,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:21,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:21,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:21,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:04:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:04:21,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:21,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707648771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:21,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:21,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412261411] [2023-12-15 18:04:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:21,396 INFO L87 Difference]: Start difference. First operand 785 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:21,459 INFO L93 Difference]: Finished difference Result 1266 states and 1747 transitions. [2023-12-15 18:04:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-15 18:04:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:21,462 INFO L225 Difference]: With dead ends: 1266 [2023-12-15 18:04:21,462 INFO L226 Difference]: Without dead ends: 783 [2023-12-15 18:04:21,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:21,464 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 66 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:21,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 663 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-15 18:04:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 745. [2023-12-15 18:04:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 643 states have (on average 1.3545878693623639) internal successors, (871), 655 states have internal predecessors, (871), 62 states have call successors, (62), 34 states have call predecessors, (62), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2023-12-15 18:04:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1017 transitions. [2023-12-15 18:04:21,496 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1017 transitions. Word has length 60 [2023-12-15 18:04:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:21,497 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1017 transitions. [2023-12-15 18:04:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 18:04:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1017 transitions. [2023-12-15 18:04:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:04:21,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:21,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:21,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:04:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-15 18:04:21,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:21,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 601272416, now seen corresponding path program 1 times [2023-12-15 18:04:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:21,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128801276] [2023-12-15 18:04:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128801276] [2023-12-15 18:04:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128801276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114030171] [2023-12-15 18:04:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:21,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:21,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:21,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:21,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:04:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:21,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:04:21,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:21,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:21,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114030171] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:21,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:04:21,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:04:21,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283379775] [2023-12-15 18:04:21,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:21,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:04:21,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:04:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:21,957 INFO L87 Difference]: Start difference. First operand 745 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:22,073 INFO L93 Difference]: Finished difference Result 791 states and 1073 transitions. [2023-12-15 18:04:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:04:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-15 18:04:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:22,078 INFO L225 Difference]: With dead ends: 791 [2023-12-15 18:04:22,078 INFO L226 Difference]: Without dead ends: 788 [2023-12-15 18:04:22,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:04:22,079 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 606 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:22,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 391 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:04:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-15 18:04:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 744. [2023-12-15 18:04:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 643 states have (on average 1.3514774494556765) internal successors, (869), 654 states have internal predecessors, (869), 61 states have call successors, (61), 34 states have call predecessors, (61), 38 states have return successors, (84), 56 states have call predecessors, (84), 58 states have call successors, (84) [2023-12-15 18:04:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1014 transitions. [2023-12-15 18:04:22,117 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1014 transitions. Word has length 60 [2023-12-15 18:04:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:22,118 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1014 transitions. [2023-12-15 18:04:22,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 18:04:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1014 transitions. [2023-12-15 18:04:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:04:22,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:22,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:22,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:22,324 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,SelfDestructingSolverStorable6 [2023-12-15 18:04:22,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:22,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1458737000, now seen corresponding path program 1 times [2023-12-15 18:04:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:22,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949614914] [2023-12-15 18:04:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:04:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:04:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949614914] [2023-12-15 18:04:22,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949614914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:22,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911992360] [2023-12-15 18:04:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:22,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:22,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:22,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:22,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:04:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:22,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:04:22,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:22,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:04:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911992360] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:04:22,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:04:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:04:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878452826] [2023-12-15 18:04:22,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:04:22,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:04:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:04:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:04:22,741 INFO L87 Difference]: Start difference. First operand 744 states and 1014 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:04:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:23,365 INFO L93 Difference]: Finished difference Result 1919 states and 2580 transitions. [2023-12-15 18:04:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:04:23,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-15 18:04:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:23,371 INFO L225 Difference]: With dead ends: 1919 [2023-12-15 18:04:23,371 INFO L226 Difference]: Without dead ends: 1479 [2023-12-15 18:04:23,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:04:23,373 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 681 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:23,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1595 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2023-12-15 18:04:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1070. [2023-12-15 18:04:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 930 states have (on average 1.3204301075268816) internal successors, (1228), 949 states have internal predecessors, (1228), 81 states have call successors, (81), 48 states have call predecessors, (81), 57 states have return successors, (118), 73 states have call predecessors, (118), 78 states have call successors, (118) [2023-12-15 18:04:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1427 transitions. [2023-12-15 18:04:23,417 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1427 transitions. Word has length 61 [2023-12-15 18:04:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:23,417 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1427 transitions. [2023-12-15 18:04:23,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-15 18:04:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1427 transitions. [2023-12-15 18:04:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:04:23,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:23,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:23,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:23,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:23,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:23,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1777456488, now seen corresponding path program 1 times [2023-12-15 18:04:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371570961] [2023-12-15 18:04:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:04:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:04:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-15 18:04:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371570961] [2023-12-15 18:04:23,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371570961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954856811] [2023-12-15 18:04:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:23,689 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) [2023-12-15 18:04:23,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:04:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:23,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:04:23,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:04:23,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954856811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528982243] [2023-12-15 18:04:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:23,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:23,820 INFO L87 Difference]: Start difference. First operand 1070 states and 1427 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:04:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:23,876 INFO L93 Difference]: Finished difference Result 1672 states and 2213 transitions. [2023-12-15 18:04:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-15 18:04:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:23,880 INFO L225 Difference]: With dead ends: 1672 [2023-12-15 18:04:23,880 INFO L226 Difference]: Without dead ends: 1000 [2023-12-15 18:04:23,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:23,884 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 311 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:23,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 409 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-15 18:04:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 991. [2023-12-15 18:04:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 861 states have (on average 1.3147502903600465) internal successors, (1132), 879 states have internal predecessors, (1132), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2023-12-15 18:04:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1319 transitions. [2023-12-15 18:04:23,917 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1319 transitions. Word has length 78 [2023-12-15 18:04:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:23,917 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1319 transitions. [2023-12-15 18:04:23,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-15 18:04:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1319 transitions. [2023-12-15 18:04:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:23,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:23,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:23,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:24,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:24,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:24,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1834725124, now seen corresponding path program 1 times [2023-12-15 18:04:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:24,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410793298] [2023-12-15 18:04:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:24,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:24,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410793298] [2023-12-15 18:04:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410793298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:04:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648272105] [2023-12-15 18:04:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:04:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:04:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:04:24,197 INFO L87 Difference]: Start difference. First operand 991 states and 1319 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:24,693 INFO L93 Difference]: Finished difference Result 1202 states and 1658 transitions. [2023-12-15 18:04:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:24,694 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:24,698 INFO L225 Difference]: With dead ends: 1202 [2023-12-15 18:04:24,698 INFO L226 Difference]: Without dead ends: 1041 [2023-12-15 18:04:24,699 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 [2023-12-15 18:04:24,699 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 475 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:24,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 509 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-15 18:04:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 991. [2023-12-15 18:04:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 861 states have (on average 1.3135888501742161) internal successors, (1131), 879 states have internal predecessors, (1131), 77 states have call successors, (77), 44 states have call predecessors, (77), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2023-12-15 18:04:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1318 transitions. [2023-12-15 18:04:24,769 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1318 transitions. Word has length 82 [2023-12-15 18:04:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:24,769 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1318 transitions. [2023-12-15 18:04:24,769 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1318 transitions. [2023-12-15 18:04:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:24,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:24,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:04:24,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:24,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1911625922, now seen corresponding path program 1 times [2023-12-15 18:04:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729522295] [2023-12-15 18:04:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:24,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729522295] [2023-12-15 18:04:24,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729522295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:24,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:24,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120773517] [2023-12-15 18:04:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:24,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:24,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:24,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:24,882 INFO L87 Difference]: Start difference. First operand 991 states and 1318 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:25,680 INFO L93 Difference]: Finished difference Result 1412 states and 1996 transitions. [2023-12-15 18:04:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:04:25,681 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:25,685 INFO L225 Difference]: With dead ends: 1412 [2023-12-15 18:04:25,685 INFO L226 Difference]: Without dead ends: 1253 [2023-12-15 18:04:25,685 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 [2023-12-15 18:04:25,686 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 757 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:25,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 717 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:04:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-12-15 18:04:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1152. [2023-12-15 18:04:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1002 states have (on average 1.3542914171656686) internal successors, (1357), 1021 states have internal predecessors, (1357), 90 states have call successors, (90), 50 states have call predecessors, (90), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2023-12-15 18:04:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1573 transitions. [2023-12-15 18:04:25,749 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1573 transitions. Word has length 82 [2023-12-15 18:04:25,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:25,749 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1573 transitions. [2023-12-15 18:04:25,749 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1573 transitions. [2023-12-15 18:04:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:25,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:25,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:25,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:04:25,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:25,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1890715200, now seen corresponding path program 1 times [2023-12-15 18:04:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732171308] [2023-12-15 18:04:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:25,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732171308] [2023-12-15 18:04:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732171308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716062729] [2023-12-15 18:04:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:25,844 INFO L87 Difference]: Start difference. First operand 1152 states and 1573 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:26,968 INFO L93 Difference]: Finished difference Result 1789 states and 2596 transitions. [2023-12-15 18:04:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:04:26,968 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:26,973 INFO L225 Difference]: With dead ends: 1789 [2023-12-15 18:04:26,973 INFO L226 Difference]: Without dead ends: 1469 [2023-12-15 18:04:26,974 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 [2023-12-15 18:04:26,975 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 766 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:26,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1241 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:04:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-15 18:04:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1303. [2023-12-15 18:04:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.379523389232127) internal successors, (1563), 1153 states have internal predecessors, (1563), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-12-15 18:04:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1807 transitions. [2023-12-15 18:04:27,037 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1807 transitions. Word has length 82 [2023-12-15 18:04:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:27,037 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1807 transitions. [2023-12-15 18:04:27,037 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1807 transitions. [2023-12-15 18:04:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:27,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:27,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:27,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:04:27,040 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:27,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 674561474, now seen corresponding path program 1 times [2023-12-15 18:04:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:27,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96310913] [2023-12-15 18:04:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:27,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:27,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:27,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96310913] [2023-12-15 18:04:27,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96310913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:27,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:27,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169355729] [2023-12-15 18:04:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:27,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:27,140 INFO L87 Difference]: Start difference. First operand 1303 states and 1807 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:27,732 INFO L93 Difference]: Finished difference Result 1940 states and 2836 transitions. [2023-12-15 18:04:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:27,733 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:27,737 INFO L225 Difference]: With dead ends: 1940 [2023-12-15 18:04:27,737 INFO L226 Difference]: Without dead ends: 1469 [2023-12-15 18:04:27,738 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 [2023-12-15 18:04:27,739 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 598 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:27,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 727 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:04:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-15 18:04:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1303. [2023-12-15 18:04:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.3768755516328333) internal successors, (1560), 1153 states have internal predecessors, (1560), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-12-15 18:04:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1804 transitions. [2023-12-15 18:04:27,801 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1804 transitions. Word has length 82 [2023-12-15 18:04:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:27,802 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1804 transitions. [2023-12-15 18:04:27,802 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:27,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1804 transitions. [2023-12-15 18:04:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:27,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:27,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:04:27,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:27,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -57405952, now seen corresponding path program 1 times [2023-12-15 18:04:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:27,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924153091] [2023-12-15 18:04:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:27,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924153091] [2023-12-15 18:04:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924153091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:27,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875330830] [2023-12-15 18:04:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:27,897 INFO L87 Difference]: Start difference. First operand 1303 states and 1804 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:28,510 INFO L93 Difference]: Finished difference Result 1936 states and 2819 transitions. [2023-12-15 18:04:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:28,510 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:28,515 INFO L225 Difference]: With dead ends: 1936 [2023-12-15 18:04:28,515 INFO L226 Difference]: Without dead ends: 1465 [2023-12-15 18:04:28,516 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 [2023-12-15 18:04:28,517 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 596 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 727 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-15 18:04:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1303. [2023-12-15 18:04:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1133 states have (on average 1.3742277140335393) internal successors, (1557), 1153 states have internal predecessors, (1557), 103 states have call successors, (103), 56 states have call predecessors, (103), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2023-12-15 18:04:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1801 transitions. [2023-12-15 18:04:28,589 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1801 transitions. Word has length 82 [2023-12-15 18:04:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:28,589 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1801 transitions. [2023-12-15 18:04:28,589 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1801 transitions. [2023-12-15 18:04:28,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:28,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:28,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:04:28,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:28,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1743585790, now seen corresponding path program 1 times [2023-12-15 18:04:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958661018] [2023-12-15 18:04:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958661018] [2023-12-15 18:04:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958661018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:28,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71912044] [2023-12-15 18:04:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:28,683 INFO L87 Difference]: Start difference. First operand 1303 states and 1801 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:29,847 INFO L93 Difference]: Finished difference Result 2443 states and 3598 transitions. [2023-12-15 18:04:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:29,847 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:29,856 INFO L225 Difference]: With dead ends: 2443 [2023-12-15 18:04:29,857 INFO L226 Difference]: Without dead ends: 1972 [2023-12-15 18:04:29,859 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 [2023-12-15 18:04:29,860 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 901 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:29,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1232 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:04:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-12-15 18:04:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1610. [2023-12-15 18:04:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1402 states have (on average 1.4094151212553494) internal successors, (1976), 1424 states have internal predecessors, (1976), 127 states have call successors, (127), 68 states have call predecessors, (127), 79 states have return successors, (173), 121 states have call predecessors, (173), 124 states have call successors, (173) [2023-12-15 18:04:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2276 transitions. [2023-12-15 18:04:29,942 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2276 transitions. Word has length 82 [2023-12-15 18:04:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:29,942 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2276 transitions. [2023-12-15 18:04:29,942 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2276 transitions. [2023-12-15 18:04:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:29,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:29,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:29,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:04:29,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:29,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1797978688, now seen corresponding path program 1 times [2023-12-15 18:04:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486338850] [2023-12-15 18:04:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:30,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486338850] [2023-12-15 18:04:30,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486338850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295454637] [2023-12-15 18:04:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:30,044 INFO L87 Difference]: Start difference. First operand 1610 states and 2276 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:31,403 INFO L93 Difference]: Finished difference Result 3568 states and 5351 transitions. [2023-12-15 18:04:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:31,404 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:31,414 INFO L225 Difference]: With dead ends: 3568 [2023-12-15 18:04:31,415 INFO L226 Difference]: Without dead ends: 2790 [2023-12-15 18:04:31,418 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 [2023-12-15 18:04:31,418 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 774 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:31,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1228 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:04:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2023-12-15 18:04:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2179. [2023-12-15 18:04:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1897 states have (on average 1.4422772799156562) internal successors, (2736), 1923 states have internal predecessors, (2736), 173 states have call successors, (173), 92 states have call predecessors, (173), 107 states have return successors, (241), 171 states have call predecessors, (241), 170 states have call successors, (241) [2023-12-15 18:04:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3150 transitions. [2023-12-15 18:04:31,561 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3150 transitions. Word has length 82 [2023-12-15 18:04:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:31,561 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3150 transitions. [2023-12-15 18:04:31,561 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3150 transitions. [2023-12-15 18:04:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:31,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:31,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:04:31,564 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:31,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2079592002, now seen corresponding path program 1 times [2023-12-15 18:04:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362773623] [2023-12-15 18:04:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362773623] [2023-12-15 18:04:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362773623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:31,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:31,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000511960] [2023-12-15 18:04:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:31,658 INFO L87 Difference]: Start difference. First operand 2179 states and 3150 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:32,289 INFO L93 Difference]: Finished difference Result 3900 states and 5864 transitions. [2023-12-15 18:04:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:04:32,290 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:32,297 INFO L225 Difference]: With dead ends: 3900 [2023-12-15 18:04:32,298 INFO L226 Difference]: Without dead ends: 2553 [2023-12-15 18:04:32,300 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 [2023-12-15 18:04:32,301 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 685 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:32,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 599 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:04:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2023-12-15 18:04:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2179. [2023-12-15 18:04:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1897 states have (on average 1.437532946758039) internal successors, (2727), 1923 states have internal predecessors, (2727), 173 states have call successors, (173), 92 states have call predecessors, (173), 107 states have return successors, (241), 171 states have call predecessors, (241), 170 states have call successors, (241) [2023-12-15 18:04:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3141 transitions. [2023-12-15 18:04:32,404 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3141 transitions. Word has length 82 [2023-12-15 18:04:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:32,404 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3141 transitions. [2023-12-15 18:04:32,404 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3141 transitions. [2023-12-15 18:04:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:32,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:32,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:32,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:04:32,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:32,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1536103040, now seen corresponding path program 1 times [2023-12-15 18:04:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968315341] [2023-12-15 18:04:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:32,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968315341] [2023-12-15 18:04:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968315341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:32,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:04:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450479277] [2023-12-15 18:04:32,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:32,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:04:32,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:32,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:04:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:32,507 INFO L87 Difference]: Start difference. First operand 2179 states and 3141 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:33,779 INFO L93 Difference]: Finished difference Result 5533 states and 8347 transitions. [2023-12-15 18:04:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:04:33,780 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:33,797 INFO L225 Difference]: With dead ends: 5533 [2023-12-15 18:04:33,797 INFO L226 Difference]: Without dead ends: 4186 [2023-12-15 18:04:33,802 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 [2023-12-15 18:04:33,803 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 783 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:33,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 867 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:04:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2023-12-15 18:04:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3365. [2023-12-15 18:04:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2939 states have (on average 1.4722694794147668) internal successors, (4327), 2973 states have internal predecessors, (4327), 261 states have call successors, (261), 140 states have call predecessors, (261), 163 states have return successors, (391), 267 states have call predecessors, (391), 258 states have call successors, (391) [2023-12-15 18:04:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4979 transitions. [2023-12-15 18:04:34,005 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4979 transitions. Word has length 82 [2023-12-15 18:04:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:34,005 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4979 transitions. [2023-12-15 18:04:34,005 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4979 transitions. [2023-12-15 18:04:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:04:34,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:34,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:04:34,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:34,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash 425471618, now seen corresponding path program 1 times [2023-12-15 18:04:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:34,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714843715] [2023-12-15 18:04:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:04:34,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714843715] [2023-12-15 18:04:34,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714843715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:34,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:04:34,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:04:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625993272] [2023-12-15 18:04:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:34,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:04:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:04:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:34,080 INFO L87 Difference]: Start difference. First operand 3365 states and 4979 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:35,173 INFO L93 Difference]: Finished difference Result 8107 states and 12374 transitions. [2023-12-15 18:04:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:04:35,174 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:04:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:35,201 INFO L225 Difference]: With dead ends: 8107 [2023-12-15 18:04:35,201 INFO L226 Difference]: Without dead ends: 5575 [2023-12-15 18:04:35,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:04:35,208 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 926 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:35,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 912 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:04:35,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2023-12-15 18:04:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 4658. [2023-12-15 18:04:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4658 states, 4060 states have (on average 1.480295566502463) internal successors, (6010), 4111 states have internal predecessors, (6010), 371 states have call successors, (371), 194 states have call predecessors, (371), 225 states have return successors, (529), 368 states have call predecessors, (529), 368 states have call successors, (529) [2023-12-15 18:04:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4658 states to 4658 states and 6910 transitions. [2023-12-15 18:04:35,452 INFO L78 Accepts]: Start accepts. Automaton has 4658 states and 6910 transitions. Word has length 82 [2023-12-15 18:04:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:35,452 INFO L495 AbstractCegarLoop]: Abstraction has 4658 states and 6910 transitions. [2023-12-15 18:04:35,452 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:04:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4658 states and 6910 transitions. [2023-12-15 18:04:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:04:35,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:35,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:04:35,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:04:35,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:35,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -865278085, now seen corresponding path program 1 times [2023-12-15 18:04:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300966637] [2023-12-15 18:04:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:04:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:04:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:04:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:04:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:04:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-15 18:04:35,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300966637] [2023-12-15 18:04:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300966637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393238067] [2023-12-15 18:04:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:35,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:35,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:35,508 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) [2023-12-15 18:04:35,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:04:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:35,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:35,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:35,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393238067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:35,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:35,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:04:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001843593] [2023-12-15 18:04:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:35,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:35,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:35,600 INFO L87 Difference]: Start difference. First operand 4658 states and 6910 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:04:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:35,770 INFO L93 Difference]: Finished difference Result 4990 states and 7326 transitions. [2023-12-15 18:04:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-15 18:04:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:35,779 INFO L225 Difference]: With dead ends: 4990 [2023-12-15 18:04:35,779 INFO L226 Difference]: Without dead ends: 3837 [2023-12-15 18:04:35,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:04:35,782 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 55 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 648 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 [2023-12-15 18:04:35,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 648 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2023-12-15 18:04:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3837. [2023-12-15 18:04:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 3342 states have (on average 1.5275284260921604) internal successors, (5105), 3377 states have internal predecessors, (5105), 314 states have call successors, (314), 157 states have call predecessors, (314), 180 states have return successors, (437), 318 states have call predecessors, (437), 312 states have call successors, (437) [2023-12-15 18:04:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 5856 transitions. [2023-12-15 18:04:35,985 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 5856 transitions. Word has length 92 [2023-12-15 18:04:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:35,985 INFO L495 AbstractCegarLoop]: Abstraction has 3837 states and 5856 transitions. [2023-12-15 18:04:35,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-15 18:04:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 5856 transitions. [2023-12-15 18:04:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:04:35,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:35,991 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, 1] [2023-12-15 18:04:35,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 18:04:36,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:36,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:36,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 202964871, now seen corresponding path program 1 times [2023-12-15 18:04:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818271063] [2023-12-15 18:04:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:04:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:04:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:36,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818271063] [2023-12-15 18:04:36,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818271063] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:36,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619492853] [2023-12-15 18:04:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:36,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:36,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:36,309 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) [2023-12-15 18:04:36,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 18:04:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:36,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:36,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 18:04:36,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619492853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:04:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708477521] [2023-12-15 18:04:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:36,447 INFO L87 Difference]: Start difference. First operand 3837 states and 5856 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:04:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:36,753 INFO L93 Difference]: Finished difference Result 11406 states and 17532 transitions. [2023-12-15 18:04:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:36,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-15 18:04:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:36,771 INFO L225 Difference]: With dead ends: 11406 [2023-12-15 18:04:36,771 INFO L226 Difference]: Without dead ends: 7581 [2023-12-15 18:04:36,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:36,782 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 215 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:04:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 496 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2023-12-15 18:04:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7551. [2023-12-15 18:04:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7551 states, 6582 states have (on average 1.5232452142206017) internal successors, (10026), 6650 states have internal predecessors, (10026), 608 states have call successors, (608), 313 states have call predecessors, (608), 360 states have return successors, (841), 603 states have call predecessors, (841), 606 states have call successors, (841) [2023-12-15 18:04:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7551 states to 7551 states and 11475 transitions. [2023-12-15 18:04:37,134 INFO L78 Accepts]: Start accepts. Automaton has 7551 states and 11475 transitions. Word has length 132 [2023-12-15 18:04:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:37,134 INFO L495 AbstractCegarLoop]: Abstraction has 7551 states and 11475 transitions. [2023-12-15 18:04:37,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:04:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7551 states and 11475 transitions. [2023-12-15 18:04:37,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:04:37,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:37,147 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, 1] [2023-12-15 18:04:37,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:37,352 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:37,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash 475879591, now seen corresponding path program 1 times [2023-12-15 18:04:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:37,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955790361] [2023-12-15 18:04:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:04:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:04:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:37,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955790361] [2023-12-15 18:04:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955790361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492180142] [2023-12-15 18:04:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:37,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:37,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:37,441 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) [2023-12-15 18:04:37,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 18:04:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:37,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:37,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 18:04:37,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:37,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492180142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:37,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:37,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:04:37,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322473442] [2023-12-15 18:04:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:37,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:37,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:37,585 INFO L87 Difference]: Start difference. First operand 7551 states and 11475 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:04:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:38,206 INFO L93 Difference]: Finished difference Result 22468 states and 34393 transitions. [2023-12-15 18:04:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:38,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-15 18:04:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:38,243 INFO L225 Difference]: With dead ends: 22468 [2023-12-15 18:04:38,244 INFO L226 Difference]: Without dead ends: 14929 [2023-12-15 18:04:38,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:38,260 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 205 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 454 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 [2023-12-15 18:04:38,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14929 states. [2023-12-15 18:04:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14929 to 14873. [2023-12-15 18:04:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14873 states, 12970 states have (on average 1.5187355435620664) internal successors, (19698), 13104 states have internal predecessors, (19698), 1182 states have call successors, (1182), 625 states have call predecessors, (1182), 720 states have return successors, (1635), 1159 states have call predecessors, (1635), 1180 states have call successors, (1635) [2023-12-15 18:04:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14873 states to 14873 states and 22515 transitions. [2023-12-15 18:04:38,913 INFO L78 Accepts]: Start accepts. Automaton has 14873 states and 22515 transitions. Word has length 132 [2023-12-15 18:04:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:38,913 INFO L495 AbstractCegarLoop]: Abstraction has 14873 states and 22515 transitions. [2023-12-15 18:04:38,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:04:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 14873 states and 22515 transitions. [2023-12-15 18:04:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:04:38,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:38,933 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, 1] [2023-12-15 18:04:38,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:39,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:39,138 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:39,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash -798451257, now seen corresponding path program 1 times [2023-12-15 18:04:39,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:39,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153625307] [2023-12-15 18:04:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:04:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:04:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:04:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153625307] [2023-12-15 18:04:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153625307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072778327] [2023-12-15 18:04:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:39,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:39,226 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) [2023-12-15 18:04:39,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 18:04:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:39,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:39,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 18:04:39,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:39,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072778327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:39,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:04:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772460894] [2023-12-15 18:04:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:39,394 INFO L87 Difference]: Start difference. First operand 14873 states and 22515 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:04:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:40,611 INFO L93 Difference]: Finished difference Result 43885 states and 67152 transitions. [2023-12-15 18:04:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:40,611 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 132 [2023-12-15 18:04:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:40,721 INFO L225 Difference]: With dead ends: 43885 [2023-12-15 18:04:40,721 INFO L226 Difference]: Without dead ends: 29025 [2023-12-15 18:04:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:40,759 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 217 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 684 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 [2023-12-15 18:04:40,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 684 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29025 states. [2023-12-15 18:04:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29025 to 29025. [2023-12-15 18:04:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29025 states, 25295 states have (on average 1.509626408381103) internal successors, (38186), 25526 states have internal predecessors, (38186), 2289 states have call successors, (2289), 1249 states have call predecessors, (2289), 1440 states have return successors, (3678), 2281 states have call predecessors, (3678), 2287 states have call successors, (3678) [2023-12-15 18:04:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29025 states to 29025 states and 44153 transitions. [2023-12-15 18:04:42,117 INFO L78 Accepts]: Start accepts. Automaton has 29025 states and 44153 transitions. Word has length 132 [2023-12-15 18:04:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:42,117 INFO L495 AbstractCegarLoop]: Abstraction has 29025 states and 44153 transitions. [2023-12-15 18:04:42,117 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:04:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29025 states and 44153 transitions. [2023-12-15 18:04:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 18:04:42,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:42,173 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, 1] [2023-12-15 18:04:42,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 18:04:42,378 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,SelfDestructingSolverStorable22 [2023-12-15 18:04:42,379 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2041225473, now seen corresponding path program 1 times [2023-12-15 18:04:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061148695] [2023-12-15 18:04:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:04:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-15 18:04:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-15 18:04:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-15 18:04:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061148695] [2023-12-15 18:04:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061148695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847913131] [2023-12-15 18:04:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:42,489 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) [2023-12-15 18:04:42,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 18:04:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:42,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:42,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 18:04:42,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:42,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847913131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:42,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:42,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:04:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284114341] [2023-12-15 18:04:42,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:42,701 INFO L87 Difference]: Start difference. First operand 29025 states and 44153 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:04:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:45,195 INFO L93 Difference]: Finished difference Result 86203 states and 132212 transitions. [2023-12-15 18:04:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:45,196 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-12-15 18:04:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:45,386 INFO L225 Difference]: With dead ends: 86203 [2023-12-15 18:04:45,386 INFO L226 Difference]: Without dead ends: 57197 [2023-12-15 18:04:45,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:45,539 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 160 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 454 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 [2023-12-15 18:04:45,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57197 states. [2023-12-15 18:04:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57197 to 56985. [2023-12-15 18:04:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56985 states, 49743 states have (on average 1.5056188810485898) internal successors, (74894), 50202 states have internal predecessors, (74894), 4361 states have call successors, (4361), 2497 states have call predecessors, (4361), 2880 states have return successors, (7006), 4317 states have call predecessors, (7006), 4359 states have call successors, (7006) [2023-12-15 18:04:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56985 states to 56985 states and 86261 transitions. [2023-12-15 18:04:48,520 INFO L78 Accepts]: Start accepts. Automaton has 56985 states and 86261 transitions. Word has length 170 [2023-12-15 18:04:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:48,520 INFO L495 AbstractCegarLoop]: Abstraction has 56985 states and 86261 transitions. [2023-12-15 18:04:48,520 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:04:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 56985 states and 86261 transitions. [2023-12-15 18:04:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 18:04:48,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:04:48,613 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, 1] [2023-12-15 18:04:48,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 18:04:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 18:04:48,819 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:04:48,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:04:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1702009955, now seen corresponding path program 1 times [2023-12-15 18:04:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:04:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603428983] [2023-12-15 18:04:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:04:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:04:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:04:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:04:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:04:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:04:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:04:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-15 18:04:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:04:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-15 18:04:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-15 18:04:48,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:04:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603428983] [2023-12-15 18:04:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603428983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:04:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71924257] [2023-12-15 18:04:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:04:48,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:04:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:04:48,928 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:04:48,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 18:04:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:04:49,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:04:49,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:04:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 18:04:49,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:04:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71924257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:04:49,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:04:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:04:49,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752834512] [2023-12-15 18:04:49,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:04:49,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:04:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:04:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:04:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:49,154 INFO L87 Difference]: Start difference. First operand 56985 states and 86261 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:04:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:04:53,911 INFO L93 Difference]: Finished difference Result 169029 states and 257664 transitions. [2023-12-15 18:04:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:04:53,911 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 170 [2023-12-15 18:04:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:04:54,500 INFO L225 Difference]: With dead ends: 169029 [2023-12-15 18:04:54,500 INFO L226 Difference]: Without dead ends: 112063 [2023-12-15 18:04:54,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:04:54,592 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 162 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 477 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 [2023-12-15 18:04:54,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 477 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:04:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112063 states. [2023-12-15 18:04:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112063 to 111643. [2023-12-15 18:04:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111643 states, 97733 states have (on average 1.5018468685091013) internal successors, (146780), 98648 states have internal predecessors, (146780), 8223 states have call successors, (8223), 4919 states have call predecessors, (8223), 5686 states have return successors, (13220), 8107 states have call predecessors, (13220), 8221 states have call successors, (13220) [2023-12-15 18:04:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111643 states to 111643 states and 168223 transitions. [2023-12-15 18:04:59,882 INFO L78 Accepts]: Start accepts. Automaton has 111643 states and 168223 transitions. Word has length 170 [2023-12-15 18:04:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:04:59,882 INFO L495 AbstractCegarLoop]: Abstraction has 111643 states and 168223 transitions. [2023-12-15 18:04:59,882 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:04:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 111643 states and 168223 transitions. [2023-12-15 18:05:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 18:05:00,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:00,112 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, 1] [2023-12-15 18:05:00,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-15 18:05:00,319 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:00,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1132086750, now seen corresponding path program 1 times [2023-12-15 18:05:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:00,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720814411] [2023-12-15 18:05:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:05:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:05:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:05:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:05:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 18:05:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 18:05:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 18:05:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-15 18:05:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-15 18:05:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720814411] [2023-12-15 18:05:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720814411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486606364] [2023-12-15 18:05:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:00,420 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:00,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 18:05:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:00,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:05:00,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:05:00,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486606364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:00,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:05:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830180070] [2023-12-15 18:05:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:00,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:00,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:00,609 INFO L87 Difference]: Start difference. First operand 111643 states and 168223 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 18:05:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:05,108 INFO L93 Difference]: Finished difference Result 176353 states and 267050 transitions. [2023-12-15 18:05:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 188 [2023-12-15 18:05:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:05,395 INFO L225 Difference]: With dead ends: 176353 [2023-12-15 18:05:05,395 INFO L226 Difference]: Without dead ends: 97839 [2023-12-15 18:05:05,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:05,483 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 185 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:05,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 278 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:05:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97839 states. [2023-12-15 18:05:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97839 to 71255. [2023-12-15 18:05:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71255 states, 62489 states have (on average 1.4593288418761703) internal successors, (91192), 62964 states have internal predecessors, (91192), 5107 states have call successors, (5107), 3275 states have call predecessors, (5107), 3658 states have return successors, (7278), 5031 states have call predecessors, (7278), 5105 states have call successors, (7278) [2023-12-15 18:05:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71255 states to 71255 states and 103577 transitions. [2023-12-15 18:05:09,206 INFO L78 Accepts]: Start accepts. Automaton has 71255 states and 103577 transitions. Word has length 188 [2023-12-15 18:05:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:09,207 INFO L495 AbstractCegarLoop]: Abstraction has 71255 states and 103577 transitions. [2023-12-15 18:05:09,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 18:05:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 71255 states and 103577 transitions. [2023-12-15 18:05:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-15 18:05:09,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:09,316 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, 3, 3, 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] [2023-12-15 18:05:09,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:09,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 18:05:09,516 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:09,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1546302273, now seen corresponding path program 1 times [2023-12-15 18:05:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191124918] [2023-12-15 18:05:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:05:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:05:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:05:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:05:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 18:05:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 18:05:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 18:05:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:05:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-15 18:05:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-15 18:05:09,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191124918] [2023-12-15 18:05:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191124918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25521728] [2023-12-15 18:05:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:09,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:09,619 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:09,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 18:05:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:05:09,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-15 18:05:09,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25521728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:09,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:09,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:05:09,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751656880] [2023-12-15 18:05:09,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:09,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:09,980 INFO L87 Difference]: Start difference. First operand 71255 states and 103577 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 18:05:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:12,961 INFO L93 Difference]: Finished difference Result 125372 states and 181564 transitions. [2023-12-15 18:05:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 188 [2023-12-15 18:05:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:13,161 INFO L225 Difference]: With dead ends: 125372 [2023-12-15 18:05:13,161 INFO L226 Difference]: Without dead ends: 76065 [2023-12-15 18:05:13,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:13,232 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 177 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:13,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 518 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:05:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76065 states. Received shutdown request... [2023-12-15 18:05:14,638 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:05:14,638 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:05:15,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-15 18:05:15,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76065 to 75917. [2023-12-15 18:05:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75917 states, 66683 states have (on average 1.433678748706567) internal successors, (95602), 67158 states have internal predecessors, (95602), 5253 states have call successors, (5253), 3597 states have call predecessors, (5253), 3980 states have return successors, (7746), 5177 states have call predecessors, (7746), 5251 states have call successors, (7746) [2023-12-15 18:05:16,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:05:16,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:05:16,625 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 18:05:16,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:05:16,628 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:05:16,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:05:16,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:05:16 BoogieIcfgContainer [2023-12-15 18:05:16,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:05:16,631 INFO L158 Benchmark]: Toolchain (without parser) took 58849.56ms. Allocated memory was 275.8MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 222.1MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-15 18:05:16,631 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:05:16,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.38ms. Allocated memory is still 275.8MB. Free memory was 221.5MB in the beginning and 202.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 18:05:16,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.88ms. Allocated memory is still 275.8MB. Free memory was 202.1MB in the beginning and 199.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:05:16,632 INFO L158 Benchmark]: Boogie Preprocessor took 75.55ms. Allocated memory is still 275.8MB. Free memory was 199.0MB in the beginning and 194.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:05:16,632 INFO L158 Benchmark]: RCFGBuilder took 643.16ms. Allocated memory is still 275.8MB. Free memory was 194.8MB in the beginning and 154.4MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-15 18:05:16,632 INFO L158 Benchmark]: TraceAbstraction took 57730.99ms. Allocated memory was 275.8MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 153.9MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-15 18:05:16,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 344.38ms. Allocated memory is still 275.8MB. Free memory was 221.5MB in the beginning and 202.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.88ms. Allocated memory is still 275.8MB. Free memory was 202.1MB in the beginning and 199.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.55ms. Allocated memory is still 275.8MB. Free memory was 199.0MB in the beginning and 194.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 643.16ms. Allocated memory is still 275.8MB. Free memory was 194.8MB in the beginning and 154.4MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 57730.99ms. Allocated memory was 275.8MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 153.9MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 235 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 57.7s, OverallIterations: 27, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12276 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12017 mSDsluCounter, 18448 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11246 mSDsCounter, 1070 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14949 IncrementalHoareTripleChecker+Invalid, 16019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1070 mSolverCounterUnsat, 7202 mSDtfsCounter, 14949 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2123 GetRequests, 1916 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111643occurred in iteration=25, InterpolantAutomatonStates: 194, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.4s AutomataMinimizationTime, 27 MinimizatonAttempts, 31748 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 3973 NumberOfCodeBlocks, 3973 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 4053 ConstructedInterpolants, 0 QuantifiedInterpolants, 8004 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6158 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 41 InterpolantComputations, 26 PerfectInterpolantSequences, 1080/1413 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown