/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:53:28,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:53:28,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:53:28,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 21:53:28,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:53:28,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:53:28,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:53:28,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:53:28,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:53:28,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:53:28,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:53:28,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:53:28,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:53:28,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:53:28,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:53:28,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:53:28,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:53:28,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:53:28,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:53:28,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:53:28,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:53:28,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:53:28,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:53:28,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:53:28,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:53:28,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:53:28,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:53:28,521 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:53:28,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:53:28,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:53:28,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:53:28,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:53:28,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:53:28,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:53:28,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:53:28,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:53:28,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:53:28,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:53:28,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:53:28,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:53:28,525 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:53:28,525 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:53:28,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:53:28,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:53:28,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:53:28,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:53:28,733 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:53:28,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label09.c [2022-01-10 21:53:28,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c696281/9454f6f64dfa4807b0b0d0f83b16888a/FLAG2df806967 [2022-01-10 21:53:29,435 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:53:29,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label09.c [2022-01-10 21:53:29,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c696281/9454f6f64dfa4807b0b0d0f83b16888a/FLAG2df806967 [2022-01-10 21:53:29,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c696281/9454f6f64dfa4807b0b0d0f83b16888a [2022-01-10 21:53:29,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:53:29,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:53:29,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:53:29,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:53:29,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:53:29,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:53:29" (1/1) ... [2022-01-10 21:53:29,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146c9f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:29, skipping insertion in model container [2022-01-10 21:53:29,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:53:29" (1/1) ... [2022-01-10 21:53:29,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:53:29,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:53:30,527 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/Problem04_label09.c[178282,178295] [2022-01-10 21:53:30,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:53:30,552 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:53:30,901 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/Problem04_label09.c[178282,178295] [2022-01-10 21:53:30,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:53:30,927 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:53:30,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30 WrapperNode [2022-01-10 21:53:30,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:53:30,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:53:30,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:53:30,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:53:30,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,103 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5567 [2022-01-10 21:53:31,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:53:31,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:53:31,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:53:31,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:53:31,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:53:31,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:53:31,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:53:31,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:53:31,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (1/1) ... [2022-01-10 21:53:31,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:53:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:53:31,307 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 21:53:31,321 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 21:53:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:53:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:53:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:53:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:53:31,400 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:53:31,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:53:34,742 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:53:34,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:53:34,757 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 21:53:34,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:34 BoogieIcfgContainer [2022-01-10 21:53:34,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:53:34,760 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:53:34,760 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:53:34,763 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:53:34,766 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:34" (1/1) ... [2022-01-10 21:53:35,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:53:35 BasicIcfg [2022-01-10 21:53:35,572 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:53:35,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:53:35,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:53:35,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:53:35,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:53:29" (1/4) ... [2022-01-10 21:53:35,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb4771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:53:35, skipping insertion in model container [2022-01-10 21:53:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:53:30" (2/4) ... [2022-01-10 21:53:35,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb4771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:53:35, skipping insertion in model container [2022-01-10 21:53:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:53:34" (3/4) ... [2022-01-10 21:53:35,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb4771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:53:35, skipping insertion in model container [2022-01-10 21:53:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:53:35" (4/4) ... [2022-01-10 21:53:35,577 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label09.cTransformedIcfg [2022-01-10 21:53:35,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:53:35,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:53:35,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:53:35,622 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 21:53:35,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:53:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 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) [2022-01-10 21:53:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-01-10 21:53:35,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:35,674 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] [2022-01-10 21:53:35,675 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2024596498, now seen corresponding path program 1 times [2022-01-10 21:53:35,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:35,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116388006] [2022-01-10 21:53:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:35,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:37,187 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 21:53:37,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116388006] [2022-01-10 21:53:37,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116388006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:37,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:37,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:53:37,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190769536] [2022-01-10 21:53:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:37,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:53:37,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:53:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:53:37,220 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 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 192.5) internal successors, (770), 3 states have internal predecessors, (770), 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) [2022-01-10 21:53:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:44,003 INFO L93 Difference]: Finished difference Result 4174 states and 8184 transitions. [2022-01-10 21:53:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:53:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 3 states have internal predecessors, (770), 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 770 [2022-01-10 21:53:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:44,041 INFO L225 Difference]: With dead ends: 4174 [2022-01-10 21:53:44,041 INFO L226 Difference]: Without dead ends: 3219 [2022-01-10 21:53:44,051 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 [2022-01-10 21:53:44,054 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1815 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5220 mSolverCounterSat, 1992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 7212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1992 IncrementalHoareTripleChecker+Valid, 5220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:44,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 275 Invalid, 7212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1992 Valid, 5220 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-10 21:53:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-01-10 21:53:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2458. [2022-01-10 21:53:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 2457 states have (on average 1.5474155474155473) internal successors, (3802), 2457 states have internal predecessors, (3802), 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) [2022-01-10 21:53:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3802 transitions. [2022-01-10 21:53:44,150 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3802 transitions. Word has length 770 [2022-01-10 21:53:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:53:44,152 INFO L470 AbstractCegarLoop]: Abstraction has 2458 states and 3802 transitions. [2022-01-10 21:53:44,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 3 states have internal predecessors, (770), 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) [2022-01-10 21:53:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3802 transitions. [2022-01-10 21:53:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-01-10 21:53:44,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:44,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:44,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:53:44,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -394596231, now seen corresponding path program 1 times [2022-01-10 21:53:44,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:44,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701229853] [2022-01-10 21:53:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:44,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:53:44,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:44,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701229853] [2022-01-10 21:53:44,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701229853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:44,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:44,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:53:44,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379045535] [2022-01-10 21:53:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:44,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:53:44,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:53:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:53:44,502 INFO L87 Difference]: Start difference. First operand 2458 states and 3802 transitions. Second operand has 4 states, 4 states have (on average 197.25) internal successors, (789), 3 states have internal predecessors, (789), 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) [2022-01-10 21:53:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:49,824 INFO L93 Difference]: Finished difference Result 8186 states and 13540 transitions. [2022-01-10 21:53:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:53:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 3 states have internal predecessors, (789), 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 789 [2022-01-10 21:53:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:49,867 INFO L225 Difference]: With dead ends: 8186 [2022-01-10 21:53:49,867 INFO L226 Difference]: Without dead ends: 5730 [2022-01-10 21:53:49,889 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 [2022-01-10 21:53:49,890 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1687 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4982 mSolverCounterSat, 1531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1531 IncrementalHoareTripleChecker+Valid, 4982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:49,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 535 Invalid, 6513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1531 Valid, 4982 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-01-10 21:53:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2022-01-10 21:53:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 5730. [2022-01-10 21:53:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5729 states have (on average 1.4494676208762436) internal successors, (8304), 5729 states have internal predecessors, (8304), 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) [2022-01-10 21:53:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 8304 transitions. [2022-01-10 21:53:50,016 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 8304 transitions. Word has length 789 [2022-01-10 21:53:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:53:50,017 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 8304 transitions. [2022-01-10 21:53:50,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 3 states have internal predecessors, (789), 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) [2022-01-10 21:53:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 8304 transitions. [2022-01-10 21:53:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2022-01-10 21:53:50,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:50,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 21:53:50,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:53:50,045 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1336463281, now seen corresponding path program 1 times [2022-01-10 21:53:50,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:50,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295209935] [2022-01-10 21:53:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:50,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 21:53:50,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:50,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295209935] [2022-01-10 21:53:50,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295209935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:50,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:50,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:53:50,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032911954] [2022-01-10 21:53:50,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:50,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:53:50,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:50,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:53:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:53:50,371 INFO L87 Difference]: Start difference. First operand 5730 states and 8304 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 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) [2022-01-10 21:53:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:55,020 INFO L93 Difference]: Finished difference Result 14730 states and 21108 transitions. [2022-01-10 21:53:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:53:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 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 806 [2022-01-10 21:53:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:55,050 INFO L225 Difference]: With dead ends: 14730 [2022-01-10 21:53:55,050 INFO L226 Difference]: Without dead ends: 9002 [2022-01-10 21:53:55,064 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 [2022-01-10 21:53:55,070 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1646 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4272 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 4272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:55,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 593 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 4272 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-01-10 21:53:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2022-01-10 21:53:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 9002. [2022-01-10 21:53:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9002 states, 9001 states have (on average 1.353405177202533) internal successors, (12182), 9001 states have internal predecessors, (12182), 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) [2022-01-10 21:53:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 12182 transitions. [2022-01-10 21:53:55,246 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 12182 transitions. Word has length 806 [2022-01-10 21:53:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:53:55,246 INFO L470 AbstractCegarLoop]: Abstraction has 9002 states and 12182 transitions. [2022-01-10 21:53:55,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 3 states have internal predecessors, (791), 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) [2022-01-10 21:53:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 12182 transitions. [2022-01-10 21:53:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-01-10 21:53:55,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:55,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:55,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:53:55,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1005631238, now seen corresponding path program 1 times [2022-01-10 21:53:55,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:55,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259840296] [2022-01-10 21:53:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:55,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:53:55,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:55,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259840296] [2022-01-10 21:53:55,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259840296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:55,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:55,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:53:55,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422222836] [2022-01-10 21:53:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:55,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:53:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:53:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:55,635 INFO L87 Difference]: Start difference. First operand 9002 states and 12182 transitions. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2022-01-10 21:53:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:53:58,996 INFO L93 Difference]: Finished difference Result 19638 states and 27331 transitions. [2022-01-10 21:53:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:53:58,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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 808 [2022-01-10 21:53:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:53:59,037 INFO L225 Difference]: With dead ends: 19638 [2022-01-10 21:53:59,040 INFO L226 Difference]: Without dead ends: 10638 [2022-01-10 21:53:59,056 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 [2022-01-10 21:53:59,062 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 842 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:53:59,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 1134 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 21:53:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2022-01-10 21:53:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 10638. [2022-01-10 21:53:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10637 states have (on average 1.384224875434803) internal successors, (14724), 10637 states have internal predecessors, (14724), 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) [2022-01-10 21:53:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14724 transitions. [2022-01-10 21:53:59,378 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14724 transitions. Word has length 808 [2022-01-10 21:53:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:53:59,378 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 14724 transitions. [2022-01-10 21:53:59,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2022-01-10 21:53:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14724 transitions. [2022-01-10 21:53:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2022-01-10 21:53:59,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:53:59,414 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 21:53:59,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:53:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:53:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 929949700, now seen corresponding path program 1 times [2022-01-10 21:53:59,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:53:59,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651534992] [2022-01-10 21:53:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:53:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:53:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:53:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 21:53:59,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:53:59,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651534992] [2022-01-10 21:53:59,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651534992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:53:59,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:53:59,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:53:59,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39328678] [2022-01-10 21:53:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:53:59,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:53:59,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:53:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:53:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:53:59,879 INFO L87 Difference]: Start difference. First operand 10638 states and 14724 transitions. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 2 states have internal predecessors, (795), 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) [2022-01-10 21:54:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:03,308 INFO L93 Difference]: Finished difference Result 24546 states and 34957 transitions. [2022-01-10 21:54:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 2 states have internal predecessors, (795), 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 813 [2022-01-10 21:54:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:03,360 INFO L225 Difference]: With dead ends: 24546 [2022-01-10 21:54:03,360 INFO L226 Difference]: Without dead ends: 13910 [2022-01-10 21:54:03,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:03,388 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 935 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 348 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 21:54:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13910 states. [2022-01-10 21:54:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13910 to 13910. [2022-01-10 21:54:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13910 states, 13909 states have (on average 1.3961463800416996) internal successors, (19419), 13909 states have internal predecessors, (19419), 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) [2022-01-10 21:54:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13910 states to 13910 states and 19419 transitions. [2022-01-10 21:54:03,672 INFO L78 Accepts]: Start accepts. Automaton has 13910 states and 19419 transitions. Word has length 813 [2022-01-10 21:54:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:03,687 INFO L470 AbstractCegarLoop]: Abstraction has 13910 states and 19419 transitions. [2022-01-10 21:54:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 2 states have internal predecessors, (795), 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) [2022-01-10 21:54:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13910 states and 19419 transitions. [2022-01-10 21:54:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2022-01-10 21:54:03,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:03,730 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:03,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 21:54:03,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 660394577, now seen corresponding path program 1 times [2022-01-10 21:54:03,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:03,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407139335] [2022-01-10 21:54:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:03,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 21:54:04,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:04,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407139335] [2022-01-10 21:54:04,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407139335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:04,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:04,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:54:04,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444715620] [2022-01-10 21:54:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:04,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:04,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:04,271 INFO L87 Difference]: Start difference. First operand 13910 states and 19419 transitions. Second operand has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 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) [2022-01-10 21:54:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:07,493 INFO L93 Difference]: Finished difference Result 34362 states and 48201 transitions. [2022-01-10 21:54:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:07,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 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 867 [2022-01-10 21:54:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:07,551 INFO L225 Difference]: With dead ends: 34362 [2022-01-10 21:54:07,551 INFO L226 Difference]: Without dead ends: 20454 [2022-01-10 21:54:07,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:07,576 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 811 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:07,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 254 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 21:54:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20454 states. [2022-01-10 21:54:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20454 to 20454. [2022-01-10 21:54:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20454 states, 20453 states have (on average 1.3407324108932674) internal successors, (27422), 20453 states have internal predecessors, (27422), 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) [2022-01-10 21:54:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20454 states to 20454 states and 27422 transitions. [2022-01-10 21:54:07,988 INFO L78 Accepts]: Start accepts. Automaton has 20454 states and 27422 transitions. Word has length 867 [2022-01-10 21:54:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:07,989 INFO L470 AbstractCegarLoop]: Abstraction has 20454 states and 27422 transitions. [2022-01-10 21:54:07,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 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) [2022-01-10 21:54:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 20454 states and 27422 transitions. [2022-01-10 21:54:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2022-01-10 21:54:08,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:08,061 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:08,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 21:54:08,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 902316876, now seen corresponding path program 1 times [2022-01-10 21:54:08,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:08,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085860803] [2022-01-10 21:54:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:08,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-01-10 21:54:08,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085860803] [2022-01-10 21:54:08,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085860803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:08,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:08,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:54:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124647560] [2022-01-10 21:54:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:08,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:08,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:08,529 INFO L87 Difference]: Start difference. First operand 20454 states and 27422 transitions. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2022-01-10 21:54:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:11,973 INFO L93 Difference]: Finished difference Result 44996 states and 60528 transitions. [2022-01-10 21:54:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:11,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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 871 [2022-01-10 21:54:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:12,004 INFO L225 Difference]: With dead ends: 44996 [2022-01-10 21:54:12,004 INFO L226 Difference]: Without dead ends: 24544 [2022-01-10 21:54:12,019 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 [2022-01-10 21:54:12,020 INFO L933 BasicCegarLoop]: 1512 mSDtfsCounter, 817 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:12,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 1521 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 21:54:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24544 states. [2022-01-10 21:54:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24544 to 24544. [2022-01-10 21:54:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24544 states, 24543 states have (on average 1.303508128590637) internal successors, (31992), 24543 states have internal predecessors, (31992), 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) [2022-01-10 21:54:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24544 states to 24544 states and 31992 transitions. [2022-01-10 21:54:12,282 INFO L78 Accepts]: Start accepts. Automaton has 24544 states and 31992 transitions. Word has length 871 [2022-01-10 21:54:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 24544 states and 31992 transitions. [2022-01-10 21:54:12,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2022-01-10 21:54:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24544 states and 31992 transitions. [2022-01-10 21:54:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2022-01-10 21:54:12,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:12,307 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 21:54:12,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 21:54:12,307 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash -471846462, now seen corresponding path program 1 times [2022-01-10 21:54:12,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:12,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027071169] [2022-01-10 21:54:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:12,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 21:54:12,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:12,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027071169] [2022-01-10 21:54:12,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027071169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:12,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:12,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:54:12,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068287816] [2022-01-10 21:54:12,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:12,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:12,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:12,559 INFO L87 Difference]: Start difference. First operand 24544 states and 31992 transitions. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 2 states have internal predecessors, (829), 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) [2022-01-10 21:54:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:16,080 INFO L93 Difference]: Finished difference Result 69536 states and 91083 transitions. [2022-01-10 21:54:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 2 states have internal predecessors, (829), 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 873 [2022-01-10 21:54:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:16,185 INFO L225 Difference]: With dead ends: 69536 [2022-01-10 21:54:16,185 INFO L226 Difference]: Without dead ends: 44994 [2022-01-10 21:54:16,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:16,208 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 888 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:16,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 571 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 21:54:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44994 states. [2022-01-10 21:54:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44994 to 44994. [2022-01-10 21:54:16,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44994 states, 44993 states have (on average 1.2180339163869935) internal successors, (54803), 44993 states have internal predecessors, (54803), 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) [2022-01-10 21:54:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44994 states to 44994 states and 54803 transitions. [2022-01-10 21:54:16,687 INFO L78 Accepts]: Start accepts. Automaton has 44994 states and 54803 transitions. Word has length 873 [2022-01-10 21:54:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:16,687 INFO L470 AbstractCegarLoop]: Abstraction has 44994 states and 54803 transitions. [2022-01-10 21:54:16,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 2 states have internal predecessors, (829), 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) [2022-01-10 21:54:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 44994 states and 54803 transitions. [2022-01-10 21:54:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2022-01-10 21:54:16,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:16,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:16,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 21:54:16,724 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1790459517, now seen corresponding path program 1 times [2022-01-10 21:54:16,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:16,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118632525] [2022-01-10 21:54:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:16,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 21:54:17,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:17,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118632525] [2022-01-10 21:54:17,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118632525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:17,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:17,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:54:17,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672378149] [2022-01-10 21:54:17,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:17,049 INFO L87 Difference]: Start difference. First operand 44994 states and 54803 transitions. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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) [2022-01-10 21:54:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:20,562 INFO L93 Difference]: Finished difference Result 118616 states and 145175 transitions. [2022-01-10 21:54:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:20,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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 922 [2022-01-10 21:54:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:20,656 INFO L225 Difference]: With dead ends: 118616 [2022-01-10 21:54:20,657 INFO L226 Difference]: Without dead ends: 73624 [2022-01-10 21:54:20,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:20,754 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 898 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:20,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 552 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 21:54:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73624 states. [2022-01-10 21:54:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73624 to 65444. [2022-01-10 21:54:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65444 states, 65443 states have (on average 1.1881179041303118) internal successors, (77754), 65443 states have internal predecessors, (77754), 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) [2022-01-10 21:54:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65444 states to 65444 states and 77754 transitions. [2022-01-10 21:54:21,714 INFO L78 Accepts]: Start accepts. Automaton has 65444 states and 77754 transitions. Word has length 922 [2022-01-10 21:54:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:21,714 INFO L470 AbstractCegarLoop]: Abstraction has 65444 states and 77754 transitions. [2022-01-10 21:54:21,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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) [2022-01-10 21:54:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 65444 states and 77754 transitions. [2022-01-10 21:54:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-01-10 21:54:21,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:21,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 21:54:21,898 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1677147827, now seen corresponding path program 1 times [2022-01-10 21:54:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717066581] [2022-01-10 21:54:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:21,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 21:54:22,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:22,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717066581] [2022-01-10 21:54:22,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717066581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:22,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:22,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:54:22,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502301856] [2022-01-10 21:54:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:22,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:22,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:22,267 INFO L87 Difference]: Start difference. First operand 65444 states and 77754 transitions. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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) [2022-01-10 21:54:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:25,754 INFO L93 Difference]: Finished difference Result 158698 states and 187776 transitions. [2022-01-10 21:54:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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 970 [2022-01-10 21:54:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:25,861 INFO L225 Difference]: With dead ends: 158698 [2022-01-10 21:54:25,861 INFO L226 Difference]: Without dead ends: 93256 [2022-01-10 21:54:25,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:25,894 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 911 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:25,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 311 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 21:54:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93256 states. [2022-01-10 21:54:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93256 to 89984. [2022-01-10 21:54:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89984 states, 89983 states have (on average 1.1276018803551782) internal successors, (101465), 89983 states have internal predecessors, (101465), 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) [2022-01-10 21:54:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89984 states to 89984 states and 101465 transitions. [2022-01-10 21:54:26,949 INFO L78 Accepts]: Start accepts. Automaton has 89984 states and 101465 transitions. Word has length 970 [2022-01-10 21:54:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:26,949 INFO L470 AbstractCegarLoop]: Abstraction has 89984 states and 101465 transitions. [2022-01-10 21:54:26,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 2 states have internal predecessors, (894), 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) [2022-01-10 21:54:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 89984 states and 101465 transitions. [2022-01-10 21:54:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2022-01-10 21:54:27,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:27,009 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:27,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 21:54:27,009 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash -763976083, now seen corresponding path program 1 times [2022-01-10 21:54:27,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:27,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620714574] [2022-01-10 21:54:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:27,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-01-10 21:54:27,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620714574] [2022-01-10 21:54:27,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620714574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:27,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:27,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:54:27,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959008829] [2022-01-10 21:54:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:27,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:27,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:27,539 INFO L87 Difference]: Start difference. First operand 89984 states and 101465 transitions. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2022-01-10 21:54:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:54:30,584 INFO L93 Difference]: Finished difference Result 187328 states and 210596 transitions. [2022-01-10 21:54:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:54:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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 1171 [2022-01-10 21:54:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:54:30,832 INFO L225 Difference]: With dead ends: 187328 [2022-01-10 21:54:30,832 INFO L226 Difference]: Without dead ends: 91620 [2022-01-10 21:54:30,910 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 [2022-01-10 21:54:30,911 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 828 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 21:54:30,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1405 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 21:54:31,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91620 states. [2022-01-10 21:54:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91620 to 85894. [2022-01-10 21:54:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85894 states, 85893 states have (on average 1.1060621936595532) internal successors, (95003), 85893 states have internal predecessors, (95003), 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) [2022-01-10 21:54:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85894 states to 85894 states and 95003 transitions. [2022-01-10 21:54:31,932 INFO L78 Accepts]: Start accepts. Automaton has 85894 states and 95003 transitions. Word has length 1171 [2022-01-10 21:54:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:54:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 85894 states and 95003 transitions. [2022-01-10 21:54:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2022-01-10 21:54:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 85894 states and 95003 transitions. [2022-01-10 21:54:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2022-01-10 21:54:32,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:54:32,106 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:32,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 21:54:32,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:54:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:54:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash 627410743, now seen corresponding path program 1 times [2022-01-10 21:54:32,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:54:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407313694] [2022-01-10 21:54:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:54:32,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:54:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:54:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-01-10 21:54:32,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:54:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407313694] [2022-01-10 21:54:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407313694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:54:32,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:54:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:54:32,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326049007] [2022-01-10 21:54:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:54:32,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:54:32,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:54:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:54:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:54:32,835 INFO L87 Difference]: Start difference. First operand 85894 states and 95003 transitions. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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)