/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/eca-rers2012/Problem05_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:41:34,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:41:34,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:41:34,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:41:34,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:41:34,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:41:34,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:41:34,367 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 [2022-01-09 23:41:34,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:41:34,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:41:34,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:41:34,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:41:34,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:41:34,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:41:34,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:41:34,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:41:34,388 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:41:34,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:41:34,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:41:34,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:41:34,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:41:34,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:41:34,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:41:34,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:41:34,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:41:34,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:41:34,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:41:34,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:41:34,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:41:34,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:41:34,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:41:34,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:41:34,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:41:34,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:41:34,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:41:34,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:41:34,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:41:34,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:41:34,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:41:34,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:41:34,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:41:34,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:41:34,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:41:34,617 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:41:34,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54.c [2022-01-09 23:41:34,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997678f34/696d93d8599b40cd8a4d06938228ee94/FLAG347023b7a [2022-01-09 23:41:35,545 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:41:35,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label54.c [2022-01-09 23:41:35,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997678f34/696d93d8599b40cd8a4d06938228ee94/FLAG347023b7a [2022-01-09 23:41:35,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/997678f34/696d93d8599b40cd8a4d06938228ee94 [2022-01-09 23:41:35,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:41:35,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:41:35,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:41:35,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:41:35,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:41:35,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:41:35" (1/1) ... [2022-01-09 23:41:35,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8bb6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:35, skipping insertion in model container [2022-01-09 23:41:35,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:41:35" (1/1) ... [2022-01-09 23:41:35,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:41:35,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:41:37,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label54.c[380115,380128] [2022-01-09 23:41:37,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:41:37,440 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:41:38,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label54.c[380115,380128] [2022-01-09 23:41:38,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:41:38,231 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:41:38,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38 WrapperNode [2022-01-09 23:41:38,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:41:38,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:41:38,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:41:38,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:41:38,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,698 INFO L137 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346 [2022-01-09 23:41:38,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:41:38,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:41:38,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:41:38,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:41:38,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:38,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:39,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:39,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:41:39,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:41:39,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:41:39,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:41:39,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (1/1) ... [2022-01-09 23:41:39,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:41:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:41:39,092 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) [2022-01-09 23:41:39,116 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 [2022-01-09 23:41:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:41:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:41:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:41:39,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:41:39,190 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:41:39,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:41:44,830 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:41:44,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:41:44,857 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 23:41:44,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:41:44 BoogieIcfgContainer [2022-01-09 23:41:44,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:41:44,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:41:44,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:41:44,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:41:44,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:41:35" (1/3) ... [2022-01-09 23:41:44,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da622e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:41:44, skipping insertion in model container [2022-01-09 23:41:44,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:41:38" (2/3) ... [2022-01-09 23:41:44,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da622e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:41:44, skipping insertion in model container [2022-01-09 23:41:44,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:41:44" (3/3) ... [2022-01-09 23:41:44,867 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label54.c [2022-01-09 23:41:44,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:41:44,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:41:44,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:41:44,920 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 [2022-01-09 23:41:44,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:41:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:41:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2022-01-09 23:41:45,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:41:45,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:41:45,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:41:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:41:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2143191438, now seen corresponding path program 1 times [2022-01-09 23:41:45,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:41:45,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513054071] [2022-01-09 23:41:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:41:45,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:41:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:41:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:41:47,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:41:47,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513054071] [2022-01-09 23:41:47,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513054071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:41:47,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:41:47,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:41:47,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769289603] [2022-01-09 23:41:47,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:41:47,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:41:47,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:41:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:41:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:41:47,131 INFO L87 Difference]: Start difference. First operand has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:42:01,079 INFO L93 Difference]: Finished difference Result 9571 states and 18469 transitions. [2022-01-09 23:42:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:42:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1676 [2022-01-09 23:42:01,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:42:01,131 INFO L225 Difference]: With dead ends: 9571 [2022-01-09 23:42:01,131 INFO L226 Difference]: Without dead ends: 7316 [2022-01-09 23:42:01,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:42:01,144 INFO L933 BasicCegarLoop]: 2468 mSDtfsCounter, 3720 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15542 mSolverCounterSat, 4555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 20097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4555 IncrementalHoareTripleChecker+Valid, 15542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-01-09 23:42:01,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 2851 Invalid, 20097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4555 Valid, 15542 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-01-09 23:42:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2022-01-09 23:42:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5591. [2022-01-09 23:42:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 1.6051878354203934) internal successors, (8973), 5590 states have internal predecessors, (8973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 8973 transitions. [2022-01-09 23:42:01,335 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 8973 transitions. Word has length 1676 [2022-01-09 23:42:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:42:01,340 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 8973 transitions. [2022-01-09 23:42:01,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 8973 transitions. [2022-01-09 23:42:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2022-01-09 23:42:01,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:42:01,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:42:01,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:42:01,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:42:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:42:01,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1996520508, now seen corresponding path program 1 times [2022-01-09 23:42:01,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:42:01,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744839264] [2022-01-09 23:42:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:42:01,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:42:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:42:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:42:02,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:42:02,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744839264] [2022-01-09 23:42:02,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744839264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:42:02,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:42:02,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:42:02,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269734104] [2022-01-09 23:42:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:42:02,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:42:02,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:42:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:42:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:02,880 INFO L87 Difference]: Start difference. First operand 5591 states and 8973 transitions. Second operand has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:42:08,190 INFO L93 Difference]: Finished difference Result 14654 states and 24587 transitions. [2022-01-09 23:42:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:42:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1694 [2022-01-09 23:42:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:42:08,223 INFO L225 Difference]: With dead ends: 14654 [2022-01-09 23:42:08,224 INFO L226 Difference]: Without dead ends: 9065 [2022-01-09 23:42:08,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:08,232 INFO L933 BasicCegarLoop]: 3447 mSDtfsCounter, 611 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 2230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2230 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:42:08,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 3694 Invalid, 6952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2230 Valid, 4722 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-09 23:42:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2022-01-09 23:42:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9059. [2022-01-09 23:42:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9059 states, 9058 states have (on average 1.4918304261426363) internal successors, (13513), 9058 states have internal predecessors, (13513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13513 transitions. [2022-01-09 23:42:08,396 INFO L78 Accepts]: Start accepts. Automaton has 9059 states and 13513 transitions. Word has length 1694 [2022-01-09 23:42:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:42:08,401 INFO L470 AbstractCegarLoop]: Abstraction has 9059 states and 13513 transitions. [2022-01-09 23:42:08,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 9059 states and 13513 transitions. [2022-01-09 23:42:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2022-01-09 23:42:08,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:42:08,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:42:08,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:42:08,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:42:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:42:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1511689178, now seen corresponding path program 1 times [2022-01-09 23:42:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:42:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986264692] [2022-01-09 23:42:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:42:08,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:42:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:42:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:42:09,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:42:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986264692] [2022-01-09 23:42:09,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986264692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:42:09,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:42:09,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:42:09,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693557293] [2022-01-09 23:42:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:42:09,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:42:09,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:42:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:42:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:09,061 INFO L87 Difference]: Start difference. First operand 9059 states and 13513 transitions. Second operand has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:42:13,929 INFO L93 Difference]: Finished difference Result 25052 states and 38282 transitions. [2022-01-09 23:42:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:42:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1705 [2022-01-09 23:42:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:42:13,978 INFO L225 Difference]: With dead ends: 25052 [2022-01-09 23:42:13,979 INFO L226 Difference]: Without dead ends: 15995 [2022-01-09 23:42:13,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:13,997 INFO L933 BasicCegarLoop]: 3131 mSDtfsCounter, 2041 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:42:13,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 3557 Invalid, 6874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-09 23:42:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15995 states. [2022-01-09 23:42:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15995 to 15952. [2022-01-09 23:42:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15952 states, 15951 states have (on average 1.4308193843646166) internal successors, (22823), 15951 states have internal predecessors, (22823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15952 states to 15952 states and 22823 transitions. [2022-01-09 23:42:14,279 INFO L78 Accepts]: Start accepts. Automaton has 15952 states and 22823 transitions. Word has length 1705 [2022-01-09 23:42:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:42:14,280 INFO L470 AbstractCegarLoop]: Abstraction has 15952 states and 22823 transitions. [2022-01-09 23:42:14,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15952 states and 22823 transitions. [2022-01-09 23:42:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2022-01-09 23:42:14,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:42:14,330 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:42:14,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:42:14,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:42:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:42:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash 995949807, now seen corresponding path program 1 times [2022-01-09 23:42:14,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:42:14,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613102861] [2022-01-09 23:42:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:42:14,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:42:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:42:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:42:14,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:42:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613102861] [2022-01-09 23:42:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613102861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:42:14,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:42:14,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:42:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411454172] [2022-01-09 23:42:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:42:14,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:42:14,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:42:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:42:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:14,835 INFO L87 Difference]: Start difference. First operand 15952 states and 22823 transitions. Second operand has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:42:19,911 INFO L93 Difference]: Finished difference Result 33673 states and 47498 transitions. [2022-01-09 23:42:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:42:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1711 [2022-01-09 23:42:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:42:19,953 INFO L225 Difference]: With dead ends: 33673 [2022-01-09 23:42:19,953 INFO L226 Difference]: Without dead ends: 17723 [2022-01-09 23:42:19,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:42:19,975 INFO L933 BasicCegarLoop]: 3336 mSDtfsCounter, 1896 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 7285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-09 23:42:19,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1896 Valid, 3580 Invalid, 7285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-01-09 23:42:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17723 states. [2022-01-09 23:42:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17723 to 17653. [2022-01-09 23:42:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17653 states, 17652 states have (on average 1.2745297983231363) internal successors, (22498), 17652 states have internal predecessors, (22498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17653 states to 17653 states and 22498 transitions. [2022-01-09 23:42:20,208 INFO L78 Accepts]: Start accepts. Automaton has 17653 states and 22498 transitions. Word has length 1711 [2022-01-09 23:42:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:42:20,208 INFO L470 AbstractCegarLoop]: Abstraction has 17653 states and 22498 transitions. [2022-01-09 23:42:20,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 17653 states and 22498 transitions. [2022-01-09 23:42:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2022-01-09 23:42:20,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:42:20,346 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:42:20,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:42:20,347 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:42:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:42:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -563779592, now seen corresponding path program 1 times [2022-01-09 23:42:20,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:42:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714648993] [2022-01-09 23:42:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:42:20,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:42:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:42:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-09 23:42:20,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:42:20,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714648993] [2022-01-09 23:42:20,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714648993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:42:20,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:42:20,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:42:20,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127421280] [2022-01-09 23:42:20,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:42:20,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:42:20,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:42:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:42:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:42:20,871 INFO L87 Difference]: Start difference. First operand 17653 states and 22498 transitions. Second operand has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:42:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:42:28,161 INFO L93 Difference]: Finished difference Result 50609 states and 65120 transitions. [2022-01-09 23:42:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:42:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1723 [2022-01-09 23:42:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:42:28,213 INFO L225 Difference]: With dead ends: 50609 [2022-01-09 23:42:28,214 INFO L226 Difference]: Without dead ends: 32958 [2022-01-09 23:42:28,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:42:28,243 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 4057 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 9520 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4057 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 11950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 9520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:42:28,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4057 Valid, 2027 Invalid, 11950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2430 Valid, 9520 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-01-09 23:42:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32958 states.