/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:03:08,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:03:08,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:03:08,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:03:08,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:03:08,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:03:08,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:03:08,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:03:08,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:03:08,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:03:08,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:03:08,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:03:08,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:03:08,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:03:08,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:03:08,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:03:08,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:03:08,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:03:08,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:03:08,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:03:08,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:03:08,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:03:08,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:03:08,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:03:08,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:03:08,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:03:08,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:03:08,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:03:08,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:03:08,454 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:03:08,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:03:08,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:03:08,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:03:08,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:03:08,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:03:08,457 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:03:08,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:03:08,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:03:08,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:03:08,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:03:08,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:03:08,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:03:08,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:03:08,691 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:03:08,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-01-10 02:03:08,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42889b940/01f6a2393fe848dda2254c152c94dbc8/FLAG132033af6 [2022-01-10 02:03:09,549 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:03:09,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-01-10 02:03:09,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42889b940/01f6a2393fe848dda2254c152c94dbc8/FLAG132033af6 [2022-01-10 02:03:10,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42889b940/01f6a2393fe848dda2254c152c94dbc8 [2022-01-10 02:03:10,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:03:10,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:03:10,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:03:10,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:03:10,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:03:10,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:03:10" (1/1) ... [2022-01-10 02:03:10,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3499af2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:10, skipping insertion in model container [2022-01-10 02:03:10,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:03:10" (1/1) ... [2022-01-10 02:03:10,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:03:10,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:03:11,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c[380323,380336] [2022-01-10 02:03:11,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c[383339,383352] [2022-01-10 02:03:12,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:03:12,128 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:03:12,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c[380323,380336] [2022-01-10 02:03:12,883 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.11.cil-1.c[383339,383352] [2022-01-10 02:03:12,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:03:12,963 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:03:12,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12 WrapperNode [2022-01-10 02:03:12,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:03:12,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:03:12,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:03:12,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:03:12,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,453 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2022-01-10 02:03:13,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:03:13,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:03:13,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:03:13,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:03:13,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:03:13,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:03:13,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:03:13,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:03:13,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (1/1) ... [2022-01-10 02:03:13,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:03:13,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:03:13,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:03:13,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:03:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 02:03:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:03:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 02:03:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 02:03:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 02:03:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 02:03:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 02:03:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 02:03:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 02:03:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 02:03:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:03:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:03:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:03:14,204 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:03:14,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:03:20,056 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:03:20,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:03:20,078 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 02:03:20,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:03:20 BoogieIcfgContainer [2022-01-10 02:03:20,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:03:20,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:03:20,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:03:20,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:03:20,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:03:10" (1/3) ... [2022-01-10 02:03:20,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79261957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:03:20, skipping insertion in model container [2022-01-10 02:03:20,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:03:12" (2/3) ... [2022-01-10 02:03:20,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79261957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:03:20, skipping insertion in model container [2022-01-10 02:03:20,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:03:20" (3/3) ... [2022-01-10 02:03:20,089 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.11.cil-1.c [2022-01-10 02:03:20,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:03:20,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:03:20,142 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:03:20,148 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:03:20,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:03:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 02:03:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:20,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:20,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:20,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-01-10 02:03:20,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:20,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128198509] [2022-01-10 02:03:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:20,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:20,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128198509] [2022-01-10 02:03:20,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128198509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:20,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:20,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:03:20,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677978923] [2022-01-10 02:03:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:20,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:03:20,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:03:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:03:20,820 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-01-10 02:03:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:22,496 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2022-01-10 02:03:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:03:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:22,520 INFO L225 Difference]: With dead ends: 5214 [2022-01-10 02:03:22,520 INFO L226 Difference]: Without dead ends: 2611 [2022-01-10 02:03:22,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:03:22,531 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17106 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:22,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 17106 Invalid, 732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:03:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-01-10 02:03:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2022-01-10 02:03:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 02:03:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-01-10 02:03:22,658 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-01-10 02:03:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:22,659 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-01-10 02:03:22,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-01-10 02:03:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-01-10 02:03:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:22,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:22,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:03:22,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-01-10 02:03:22,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:22,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381668540] [2022-01-10 02:03:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:22,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:22,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:22,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381668540] [2022-01-10 02:03:22,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381668540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:22,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:22,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:03:22,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240262870] [2022-01-10 02:03:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:22,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:03:22,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:03:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:03:22,880 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-01-10 02:03:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:25,525 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2022-01-10 02:03:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:03:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:25,544 INFO L225 Difference]: With dead ends: 3438 [2022-01-10 02:03:25,545 INFO L226 Difference]: Without dead ends: 3098 [2022-01-10 02:03:25,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:03:25,553 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12793 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17421 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:25,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 17421 Invalid, 1993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:03:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-01-10 02:03:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2022-01-10 02:03:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-01-10 02:03:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2022-01-10 02:03:25,670 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2022-01-10 02:03:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:25,672 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2022-01-10 02:03:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-01-10 02:03:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2022-01-10 02:03:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:25,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:25,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:25,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:03:25,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-01-10 02:03:25,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641265302] [2022-01-10 02:03:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:25,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:25,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641265302] [2022-01-10 02:03:25,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641265302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:25,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:25,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:25,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549831182] [2022-01-10 02:03:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:25,881 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:28,994 INFO L93 Difference]: Finished difference Result 4296 states and 7459 transitions. [2022-01-10 02:03:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:29,011 INFO L225 Difference]: With dead ends: 4296 [2022-01-10 02:03:29,012 INFO L226 Difference]: Without dead ends: 3601 [2022-01-10 02:03:29,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:29,022 INFO L933 BasicCegarLoop]: 4919 mSDtfsCounter, 5434 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 22578 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:29,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5452 Valid, 22578 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:03:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-01-10 02:03:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3165. [2022-01-10 02:03:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.7786085825747724) internal successors, (5471), 3081 states have internal predecessors, (5471), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-01-10 02:03:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5608 transitions. [2022-01-10 02:03:29,143 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5608 transitions. Word has length 168 [2022-01-10 02:03:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:29,144 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 5608 transitions. [2022-01-10 02:03:29,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5608 transitions. [2022-01-10 02:03:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:29,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:29,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:29,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:03:29,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2022-01-10 02:03:29,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:29,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936275830] [2022-01-10 02:03:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:29,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:29,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:29,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936275830] [2022-01-10 02:03:29,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936275830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:29,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:29,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:29,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557651901] [2022-01-10 02:03:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:29,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:29,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:29,364 INFO L87 Difference]: Start difference. First operand 3165 states and 5608 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:32,488 INFO L93 Difference]: Finished difference Result 5561 states and 9484 transitions. [2022-01-10 02:03:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:32,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:32,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:32,509 INFO L225 Difference]: With dead ends: 5561 [2022-01-10 02:03:32,510 INFO L226 Difference]: Without dead ends: 4536 [2022-01-10 02:03:32,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:32,520 INFO L933 BasicCegarLoop]: 4911 mSDtfsCounter, 5431 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5449 SdHoareTripleChecker+Valid, 22570 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:32,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5449 Valid, 22570 Invalid, 3000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 02:03:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-01-10 02:03:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3826. [2022-01-10 02:03:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3683 states have (on average 1.743687211512354) internal successors, (6422), 3690 states have internal predecessors, (6422), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-01-10 02:03:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 6647 transitions. [2022-01-10 02:03:32,678 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 6647 transitions. Word has length 168 [2022-01-10 02:03:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:32,678 INFO L470 AbstractCegarLoop]: Abstraction has 3826 states and 6647 transitions. [2022-01-10 02:03:32,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 6647 transitions. [2022-01-10 02:03:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:32,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:32,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:32,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:03:32,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2022-01-10 02:03:32,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:32,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096541935] [2022-01-10 02:03:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:32,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:32,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096541935] [2022-01-10 02:03:32,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096541935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:32,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:32,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:32,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633675153] [2022-01-10 02:03:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:32,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:32,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:32,812 INFO L87 Difference]: Start difference. First operand 3826 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:35,746 INFO L93 Difference]: Finished difference Result 7994 states and 13355 transitions. [2022-01-10 02:03:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:35,776 INFO L225 Difference]: With dead ends: 7994 [2022-01-10 02:03:35,777 INFO L226 Difference]: Without dead ends: 6308 [2022-01-10 02:03:35,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:35,786 INFO L933 BasicCegarLoop]: 4907 mSDtfsCounter, 5427 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22566 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:35,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5445 Valid, 22566 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:03:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2022-01-10 02:03:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5149. [2022-01-10 02:03:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 4898 states have (on average 1.699469171090241) internal successors, (8324), 4909 states have internal predecessors, (8324), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-01-10 02:03:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8731 transitions. [2022-01-10 02:03:36,082 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8731 transitions. Word has length 168 [2022-01-10 02:03:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:36,083 INFO L470 AbstractCegarLoop]: Abstraction has 5149 states and 8731 transitions. [2022-01-10 02:03:36,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8731 transitions. [2022-01-10 02:03:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:36,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:36,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:36,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:03:36,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2022-01-10 02:03:36,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:36,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170157398] [2022-01-10 02:03:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:36,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:36,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:36,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170157398] [2022-01-10 02:03:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170157398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:36,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:36,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:36,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963366403] [2022-01-10 02:03:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:36,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:36,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:36,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:36,259 INFO L87 Difference]: Start difference. First operand 5149 states and 8731 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:39,633 INFO L93 Difference]: Finished difference Result 12859 states and 21113 transitions. [2022-01-10 02:03:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:39,670 INFO L225 Difference]: With dead ends: 12859 [2022-01-10 02:03:39,671 INFO L226 Difference]: Without dead ends: 9850 [2022-01-10 02:03:39,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:39,681 INFO L933 BasicCegarLoop]: 4903 mSDtfsCounter, 5423 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22562 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:39,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5441 Valid, 22562 Invalid, 2990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:03:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2022-01-10 02:03:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 7800. [2022-01-10 02:03:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7333 states have (on average 1.654711577798991) internal successors, (12134), 7352 states have internal predecessors, (12134), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-01-10 02:03:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12923 transitions. [2022-01-10 02:03:40,081 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12923 transitions. Word has length 168 [2022-01-10 02:03:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:40,082 INFO L470 AbstractCegarLoop]: Abstraction has 7800 states and 12923 transitions. [2022-01-10 02:03:40,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12923 transitions. [2022-01-10 02:03:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:40,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:40,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:03:40,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2022-01-10 02:03:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:40,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620869260] [2022-01-10 02:03:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:40,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:40,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:40,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620869260] [2022-01-10 02:03:40,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620869260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:40,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:40,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:40,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216013660] [2022-01-10 02:03:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:40,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:40,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:40,253 INFO L87 Difference]: Start difference. First operand 7800 states and 12923 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:43,722 INFO L93 Difference]: Finished difference Result 22588 states and 36687 transitions. [2022-01-10 02:03:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:43,778 INFO L225 Difference]: With dead ends: 22588 [2022-01-10 02:03:43,778 INFO L226 Difference]: Without dead ends: 16928 [2022-01-10 02:03:43,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:43,801 INFO L933 BasicCegarLoop]: 4897 mSDtfsCounter, 5422 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22556 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:43,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5440 Valid, 22556 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:03:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2022-01-10 02:03:44,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 13115. [2022-01-10 02:03:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6185330713817945) internal successors, (19772), 12251 states have internal predecessors, (19772), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-01-10 02:03:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21379 transitions. [2022-01-10 02:03:44,501 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21379 transitions. Word has length 168 [2022-01-10 02:03:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:44,501 INFO L470 AbstractCegarLoop]: Abstraction has 13115 states and 21379 transitions. [2022-01-10 02:03:44,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21379 transitions. [2022-01-10 02:03:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:44,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:44,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:44,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:03:44,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2022-01-10 02:03:44,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:44,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629902519] [2022-01-10 02:03:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:44,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:44,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:44,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629902519] [2022-01-10 02:03:44,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629902519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:44,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:44,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:44,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259985099] [2022-01-10 02:03:44,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:44,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:44,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:44,668 INFO L87 Difference]: Start difference. First operand 13115 states and 21379 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:46,892 INFO L93 Difference]: Finished difference Result 28108 states and 45760 transitions. [2022-01-10 02:03:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:03:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:46,958 INFO L225 Difference]: With dead ends: 28108 [2022-01-10 02:03:46,958 INFO L226 Difference]: Without dead ends: 17133 [2022-01-10 02:03:47,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:03:47,003 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 5167 mSDsluCounter, 12587 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:47,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 17141 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:03:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17133 states. [2022-01-10 02:03:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17133 to 13115. [2022-01-10 02:03:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6158316961362147) internal successors, (19739), 12251 states have internal predecessors, (19739), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-01-10 02:03:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21346 transitions. [2022-01-10 02:03:47,890 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21346 transitions. Word has length 168 [2022-01-10 02:03:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:47,890 INFO L470 AbstractCegarLoop]: Abstraction has 13115 states and 21346 transitions. [2022-01-10 02:03:47,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21346 transitions. [2022-01-10 02:03:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:47,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:47,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:03:47,899 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2022-01-10 02:03:47,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:47,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292225809] [2022-01-10 02:03:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:47,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:48,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292225809] [2022-01-10 02:03:48,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292225809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:48,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:48,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:48,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743554184] [2022-01-10 02:03:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:48,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:48,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:48,039 INFO L87 Difference]: Start difference. First operand 13115 states and 21346 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:03:52,680 INFO L93 Difference]: Finished difference Result 41980 states and 67733 transitions. [2022-01-10 02:03:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:03:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:03:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:03:52,785 INFO L225 Difference]: With dead ends: 41980 [2022-01-10 02:03:52,785 INFO L226 Difference]: Without dead ends: 31005 [2022-01-10 02:03:52,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:03:52,821 INFO L933 BasicCegarLoop]: 4883 mSDtfsCounter, 5410 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 22542 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:03:52,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5428 Valid, 22542 Invalid, 2947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:03:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2022-01-10 02:03:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 23840. [2022-01-10 02:03:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 22077 states have (on average 1.5910223309326448) internal successors, (35125), 22144 states have internal predecessors, (35125), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-01-10 02:03:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 38530 transitions. [2022-01-10 02:03:54,356 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 38530 transitions. Word has length 168 [2022-01-10 02:03:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:03:54,356 INFO L470 AbstractCegarLoop]: Abstraction has 23840 states and 38530 transitions. [2022-01-10 02:03:54,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:03:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 38530 transitions. [2022-01-10 02:03:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 02:03:54,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:03:54,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:03:54,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:03:54,371 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:03:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:03:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2022-01-10 02:03:54,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:03:54,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825602866] [2022-01-10 02:03:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:03:54,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:03:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:03:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 02:03:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-10 02:03:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-10 02:03:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-10 02:03:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:03:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:03:54,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:03:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825602866] [2022-01-10 02:03:54,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825602866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:03:54,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:03:54,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:03:54,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284597426] [2022-01-10 02:03:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:03:54,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:03:54,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:03:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:03:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:03:54,515 INFO L87 Difference]: Start difference. First operand 23840 states and 38530 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-01-10 02:04:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:01,041 INFO L93 Difference]: Finished difference Result 80899 states and 130827 transitions. [2022-01-10 02:04:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:01,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-01-10 02:04:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.