/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_BITWISE.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 10:16:40,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 10:16:40,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 10:16:40,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 10:16:40,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 10:16:40,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 10:16:40,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 10:16:40,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 10:16:40,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 10:16:40,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 10:16:40,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 10:16:40,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 10:16:40,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 10:16:40,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 10:16:40,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 10:16:40,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 10:16:40,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 10:16:40,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 10:16:40,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 10:16:40,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 10:16:40,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 10:16:40,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 10:16:40,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 10:16:40,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 10:16:40,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 10:16:40,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 10:16:40,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 10:16:40,382 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 10:16:40,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 10:16:40,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 10:16:40,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 10:16:40,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 10:16:40,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:16:40,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 10:16:40,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 10:16:40,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 10:16:40,385 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 10:16:40,385 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 10:16:40,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 10:16:40,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 10:16:40,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 10:16:40,615 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 10:16:40,619 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 10:16:40,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2022-01-10 10:16:40,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15851edaa/4bc8414cd3f743329f051713c03a70e2/FLAG144c2195a [2022-01-10 10:16:41,278 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 10:16:41,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2022-01-10 10:16:41,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15851edaa/4bc8414cd3f743329f051713c03a70e2/FLAG144c2195a [2022-01-10 10:16:41,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15851edaa/4bc8414cd3f743329f051713c03a70e2 [2022-01-10 10:16:41,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 10:16:41,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 10:16:41,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 10:16:41,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 10:16:41,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 10:16:41,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:16:41" (1/1) ... [2022-01-10 10:16:41,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2e9d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:41, skipping insertion in model container [2022-01-10 10:16:41,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:16:41" (1/1) ... [2022-01-10 10:16:41,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 10:16:41,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 10:16:42,491 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_label44.c[179919,179932] [2022-01-10 10:16:42,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:16:42,513 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 10:16:42,807 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_label44.c[179919,179932] [2022-01-10 10:16:42,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:16:42,830 INFO L208 MainTranslator]: Completed translation [2022-01-10 10:16:42,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42 WrapperNode [2022-01-10 10:16:42,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 10:16:42,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 10:16:42,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 10:16:42,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 10:16:42,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:42,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:42,960 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5567 [2022-01-10 10:16:42,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 10:16:42,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 10:16:42,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 10:16:42,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 10:16:42,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:42,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:42,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:42,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:43,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:43,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:43,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:43,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 10:16:43,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 10:16:43,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 10:16:43,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 10:16:43,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (1/1) ... [2022-01-10 10:16:43,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:16:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 10:16:43,169 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 10:16:43,186 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 10:16:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 10:16:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 10:16:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 10:16:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 10:16:43,273 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 10:16:43,274 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 10:16:46,606 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 10:16:46,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 10:16:46,625 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 10:16:46,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:16:46 BoogieIcfgContainer [2022-01-10 10:16:46,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 10:16:46,627 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 10:16:46,627 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 10:16:46,629 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 10:16:46,631 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:16:46" (1/1) ... [2022-01-10 10:16:47,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:16:47 BasicIcfg [2022-01-10 10:16:47,310 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 10:16:47,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 10:16:47,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 10:16:47,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 10:16:47,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 10:16:41" (1/4) ... [2022-01-10 10:16:47,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222ac10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:16:47, skipping insertion in model container [2022-01-10 10:16:47,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:16:42" (2/4) ... [2022-01-10 10:16:47,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222ac10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:16:47, skipping insertion in model container [2022-01-10 10:16:47,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:16:46" (3/4) ... [2022-01-10 10:16:47,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222ac10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 10:16:47, skipping insertion in model container [2022-01-10 10:16:47,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:16:47" (4/4) ... [2022-01-10 10:16:47,316 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label44.cTransformedIcfg [2022-01-10 10:16:47,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 10:16:47,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 10:16:47,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 10:16:47,364 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 10:16:47,364 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 10:16:47,393 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 10:16:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-01-10 10:16:47,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:16:47,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:16:47,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:16:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:16:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 595232640, now seen corresponding path program 1 times [2022-01-10 10:16:47,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:16:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154917909] [2022-01-10 10:16:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:16:47,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:16:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:16:48,854 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 10:16:48,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:16:48,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154917909] [2022-01-10 10:16:48,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154917909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:16:48,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:16:48,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:16:48,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055874984] [2022-01-10 10:16:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:16:48,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:16:48,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:16:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:16:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:16:48,888 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 195.5) internal successors, (782), 3 states have internal predecessors, (782), 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 10:16:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:16:56,237 INFO L93 Difference]: Finished difference Result 4174 states and 8184 transitions. [2022-01-10 10:16:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 10:16:56,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 3 states have internal predecessors, (782), 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 782 [2022-01-10 10:16:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:16:56,264 INFO L225 Difference]: With dead ends: 4174 [2022-01-10 10:16:56,264 INFO L226 Difference]: Without dead ends: 3219 [2022-01-10 10:16:56,275 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 10:16:56,277 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1791 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5220 mSolverCounterSat, 1992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 7212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1992 IncrementalHoareTripleChecker+Valid, 5220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:16:56,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1791 Valid, 275 Invalid, 7212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1992 Valid, 5220 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-01-10 10:16:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-01-10 10:16:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2458. [2022-01-10 10:16:56,373 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 10:16:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3802 transitions. [2022-01-10 10:16:56,381 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3802 transitions. Word has length 782 [2022-01-10 10:16:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:16:56,383 INFO L470 AbstractCegarLoop]: Abstraction has 2458 states and 3802 transitions. [2022-01-10 10:16:56,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 3 states have internal predecessors, (782), 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 10:16:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3802 transitions. [2022-01-10 10:16:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-01-10 10:16:56,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:16:56,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:16:56,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 10:16:56,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:16:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:16:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash 78177163, now seen corresponding path program 1 times [2022-01-10 10:16:56,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:16:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242463361] [2022-01-10 10:16:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:16:56,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:16:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:16:56,992 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 10:16:56,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:16:56,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242463361] [2022-01-10 10:16:56,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242463361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:16:56,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:16:56,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:16:56,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546094041] [2022-01-10 10:16:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:16:56,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:16:56,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:16:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:16:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:16:56,998 INFO L87 Difference]: Start difference. First operand 2458 states and 3802 transitions. Second operand has 4 states, 4 states have (on average 200.25) internal successors, (801), 3 states have internal predecessors, (801), 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 10:17:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:02,329 INFO L93 Difference]: Finished difference Result 8186 states and 13540 transitions. [2022-01-10 10:17:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:17:02,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 200.25) internal successors, (801), 3 states have internal predecessors, (801), 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 801 [2022-01-10 10:17:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:02,360 INFO L225 Difference]: With dead ends: 8186 [2022-01-10 10:17:02,360 INFO L226 Difference]: Without dead ends: 5730 [2022-01-10 10:17:02,366 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 10:17:02,367 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1687 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4982 mSolverCounterSat, 1531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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 10:17:02,367 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 10:17:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2022-01-10 10:17:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 5730. [2022-01-10 10:17:02,425 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 10:17:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 8304 transitions. [2022-01-10 10:17:02,434 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 8304 transitions. Word has length 801 [2022-01-10 10:17:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:02,434 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 8304 transitions. [2022-01-10 10:17:02,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.25) internal successors, (801), 3 states have internal predecessors, (801), 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 10:17:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 8304 transitions. [2022-01-10 10:17:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2022-01-10 10:17:02,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:02,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:02,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 10:17:02,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1604955843, now seen corresponding path program 1 times [2022-01-10 10:17:02,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:02,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511948989] [2022-01-10 10:17:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:02,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:02,720 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 10:17:02,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511948989] [2022-01-10 10:17:02,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511948989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:02,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:02,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:17:02,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096491640] [2022-01-10 10:17:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:17:02,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:17:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:17:02,723 INFO L87 Difference]: Start difference. First operand 5730 states and 8304 transitions. Second operand has 4 states, 4 states have (on average 200.75) internal successors, (803), 3 states have internal predecessors, (803), 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 10:17:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:07,104 INFO L93 Difference]: Finished difference Result 14730 states and 21108 transitions. [2022-01-10 10:17:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:17:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 200.75) internal successors, (803), 3 states have internal predecessors, (803), 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 818 [2022-01-10 10:17:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:07,126 INFO L225 Difference]: With dead ends: 14730 [2022-01-10 10:17:07,126 INFO L226 Difference]: Without dead ends: 9002 [2022-01-10 10:17:07,133 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 10:17:07,134 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1646 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4272 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:07,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 593 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 4272 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 10:17:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2022-01-10 10:17:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 9002. [2022-01-10 10:17:07,236 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 10:17:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 12182 transitions. [2022-01-10 10:17:07,249 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 12182 transitions. Word has length 818 [2022-01-10 10:17:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:07,249 INFO L470 AbstractCegarLoop]: Abstraction has 9002 states and 12182 transitions. [2022-01-10 10:17:07,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.75) internal successors, (803), 3 states have internal predecessors, (803), 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 10:17:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 12182 transitions. [2022-01-10 10:17:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2022-01-10 10:17:07,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:07,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:07,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 10:17:07,265 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:07,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1551860364, now seen corresponding path program 1 times [2022-01-10 10:17:07,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683368230] [2022-01-10 10:17:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:07,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:07,548 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 10:17:07,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:07,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683368230] [2022-01-10 10:17:07,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683368230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:07,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:07,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:17:07,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557340742] [2022-01-10 10:17:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:07,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:07,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:07,550 INFO L87 Difference]: Start difference. First operand 9002 states and 12182 transitions. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 10:17:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:10,732 INFO L93 Difference]: Finished difference Result 19638 states and 27331 transitions. [2022-01-10 10:17:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 820 [2022-01-10 10:17:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:10,758 INFO L225 Difference]: With dead ends: 19638 [2022-01-10 10:17:10,758 INFO L226 Difference]: Without dead ends: 10638 [2022-01-10 10:17:10,765 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 10:17:10,766 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 843 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:10,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1133 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 10:17:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2022-01-10 10:17:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 10638. [2022-01-10 10:17:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10637 states have (on average 1.3843188869042022) internal successors, (14725), 10637 states have internal predecessors, (14725), 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 10:17:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14725 transitions. [2022-01-10 10:17:10,918 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14725 transitions. Word has length 820 [2022-01-10 10:17:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:10,919 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 14725 transitions. [2022-01-10 10:17:10,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 10:17:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14725 transitions. [2022-01-10 10:17:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2022-01-10 10:17:10,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:10,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:10,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 10:17:10,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1694884502, now seen corresponding path program 1 times [2022-01-10 10:17:10,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202615773] [2022-01-10 10:17:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:10,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:11,189 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 10:17:11,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:11,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202615773] [2022-01-10 10:17:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202615773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:11,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:17:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710995985] [2022-01-10 10:17:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:11,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:11,197 INFO L87 Difference]: Start difference. First operand 10638 states and 14725 transitions. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 2 states have internal predecessors, (807), 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 10:17:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:14,336 INFO L93 Difference]: Finished difference Result 24546 states and 34960 transitions. [2022-01-10 10:17:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 2 states have internal predecessors, (807), 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 825 [2022-01-10 10:17:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:14,361 INFO L225 Difference]: With dead ends: 24546 [2022-01-10 10:17:14,361 INFO L226 Difference]: Without dead ends: 13910 [2022-01-10 10:17:14,367 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 10:17:14,371 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 935 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:14,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 348 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 10:17:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13910 states. [2022-01-10 10:17:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13910 to 13910. [2022-01-10 10:17:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13910 states, 13909 states have (on average 1.3962901718311884) internal successors, (19421), 13909 states have internal predecessors, (19421), 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 10:17:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13910 states to 13910 states and 19421 transitions. [2022-01-10 10:17:14,538 INFO L78 Accepts]: Start accepts. Automaton has 13910 states and 19421 transitions. Word has length 825 [2022-01-10 10:17:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:14,539 INFO L470 AbstractCegarLoop]: Abstraction has 13910 states and 19421 transitions. [2022-01-10 10:17:14,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 2 states have internal predecessors, (807), 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 10:17:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13910 states and 19421 transitions. [2022-01-10 10:17:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2022-01-10 10:17:14,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:14,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:14,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 10:17:14,570 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1632551267, now seen corresponding path program 1 times [2022-01-10 10:17:14,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:14,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908209439] [2022-01-10 10:17:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:14,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:14,877 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 10:17:14,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:14,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908209439] [2022-01-10 10:17:14,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908209439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:14,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:14,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:17:14,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376241965] [2022-01-10 10:17:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:14,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:14,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:14,879 INFO L87 Difference]: Start difference. First operand 13910 states and 19421 transitions. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 2 states have internal predecessors, (840), 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 10:17:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:17,810 INFO L93 Difference]: Finished difference Result 34362 states and 48206 transitions. [2022-01-10 10:17:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:17,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 2 states have internal predecessors, (840), 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 879 [2022-01-10 10:17:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:17,840 INFO L225 Difference]: With dead ends: 34362 [2022-01-10 10:17:17,840 INFO L226 Difference]: Without dead ends: 20454 [2022-01-10 10:17:17,848 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 10:17:17,849 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 811 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:17,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 254 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 10:17:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20454 states. [2022-01-10 10:17:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20454 to 20454. [2022-01-10 10:17:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20454 states, 20453 states have (on average 1.340879088642253) internal successors, (27425), 20453 states have internal predecessors, (27425), 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 10:17:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20454 states to 20454 states and 27425 transitions. [2022-01-10 10:17:18,081 INFO L78 Accepts]: Start accepts. Automaton has 20454 states and 27425 transitions. Word has length 879 [2022-01-10 10:17:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:18,082 INFO L470 AbstractCegarLoop]: Abstraction has 20454 states and 27425 transitions. [2022-01-10 10:17:18,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 2 states have internal predecessors, (840), 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 10:17:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 20454 states and 27425 transitions. [2022-01-10 10:17:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2022-01-10 10:17:18,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:18,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:18,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 10:17:18,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1418301918, now seen corresponding path program 1 times [2022-01-10 10:17:18,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:18,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465141143] [2022-01-10 10:17:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:18,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:18,362 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 10:17:18,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:18,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465141143] [2022-01-10 10:17:18,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465141143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:18,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:18,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:17:18,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418695432] [2022-01-10 10:17:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:18,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:18,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:18,365 INFO L87 Difference]: Start difference. First operand 20454 states and 27425 transitions. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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 10:17:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:21,497 INFO L93 Difference]: Finished difference Result 44998 states and 60537 transitions. [2022-01-10 10:17:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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 883 [2022-01-10 10:17:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:21,528 INFO L225 Difference]: With dead ends: 44998 [2022-01-10 10:17:21,528 INFO L226 Difference]: Without dead ends: 24546 [2022-01-10 10:17:21,539 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 10:17:21,539 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 819 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:21,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 1522 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 10:17:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24546 states. [2022-01-10 10:17:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24546 to 24544. [2022-01-10 10:17:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24544 states, 24543 states have (on average 1.3037118526667482) internal successors, (31997), 24543 states have internal predecessors, (31997), 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 10:17:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24544 states to 24544 states and 31997 transitions. [2022-01-10 10:17:21,786 INFO L78 Accepts]: Start accepts. Automaton has 24544 states and 31997 transitions. Word has length 883 [2022-01-10 10:17:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:21,786 INFO L470 AbstractCegarLoop]: Abstraction has 24544 states and 31997 transitions. [2022-01-10 10:17:21,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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 10:17:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 24544 states and 31997 transitions. [2022-01-10 10:17:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2022-01-10 10:17:21,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:21,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:21,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 10:17:21,819 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1485930324, now seen corresponding path program 1 times [2022-01-10 10:17:21,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:21,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716966534] [2022-01-10 10:17:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:21,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:22,096 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 10:17:22,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:22,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716966534] [2022-01-10 10:17:22,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716966534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:22,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:22,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:17:22,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135234564] [2022-01-10 10:17:22,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:22,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:22,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:22,098 INFO L87 Difference]: Start difference. First operand 24544 states and 31997 transitions. Second operand has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 2 states have internal predecessors, (841), 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 10:17:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:25,341 INFO L93 Difference]: Finished difference Result 69536 states and 91097 transitions. [2022-01-10 10:17:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 2 states have internal predecessors, (841), 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 885 [2022-01-10 10:17:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:25,388 INFO L225 Difference]: With dead ends: 69536 [2022-01-10 10:17:25,388 INFO L226 Difference]: Without dead ends: 44994 [2022-01-10 10:17:25,403 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 10:17:25,403 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 887 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:25,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 572 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 10:17:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44994 states. [2022-01-10 10:17:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44994 to 44994. [2022-01-10 10:17:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44994 states, 44993 states have (on average 1.2180783677460938) internal successors, (54805), 44993 states have internal predecessors, (54805), 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 10:17:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44994 states to 44994 states and 54805 transitions. [2022-01-10 10:17:25,824 INFO L78 Accepts]: Start accepts. Automaton has 44994 states and 54805 transitions. Word has length 885 [2022-01-10 10:17:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:25,824 INFO L470 AbstractCegarLoop]: Abstraction has 44994 states and 54805 transitions. [2022-01-10 10:17:25,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 2 states have internal predecessors, (841), 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 10:17:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 44994 states and 54805 transitions. [2022-01-10 10:17:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2022-01-10 10:17:25,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:25,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:17:25,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 10:17:25,864 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1184019569, now seen corresponding path program 1 times [2022-01-10 10:17:25,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:25,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821018672] [2022-01-10 10:17:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:25,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:26,373 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 10:17:26,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821018672] [2022-01-10 10:17:26,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821018672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:26,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:26,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:17:26,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369730566] [2022-01-10 10:17:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:26,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:26,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:26,376 INFO L87 Difference]: Start difference. First operand 44994 states and 54805 transitions. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 2 states have internal predecessors, (906), 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 10:17:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:29,812 INFO L93 Difference]: Finished difference Result 118616 states and 145180 transitions. [2022-01-10 10:17:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:29,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 2 states have internal predecessors, (906), 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 934 [2022-01-10 10:17:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:29,893 INFO L225 Difference]: With dead ends: 118616 [2022-01-10 10:17:29,893 INFO L226 Difference]: Without dead ends: 73624 [2022-01-10 10:17:29,922 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 10:17:29,924 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 899 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 551 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 10:17:29,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 551 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 10:17:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73624 states. [2022-01-10 10:17:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73624 to 66262. [2022-01-10 10:17:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66262 states, 66261 states have (on average 1.1856597395149484) internal successors, (78563), 66261 states have internal predecessors, (78563), 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 10:17:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66262 states to 66262 states and 78563 transitions. [2022-01-10 10:17:30,678 INFO L78 Accepts]: Start accepts. Automaton has 66262 states and 78563 transitions. Word has length 934 [2022-01-10 10:17:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:30,678 INFO L470 AbstractCegarLoop]: Abstraction has 66262 states and 78563 transitions. [2022-01-10 10:17:30,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 2 states have internal predecessors, (906), 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 10:17:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 66262 states and 78563 transitions. [2022-01-10 10:17:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2022-01-10 10:17:30,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:30,727 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 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, 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] [2022-01-10 10:17:30,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 10:17:30,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1251471202, now seen corresponding path program 1 times [2022-01-10 10:17:30,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610092250] [2022-01-10 10:17:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:30,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-01-10 10:17:31,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:31,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610092250] [2022-01-10 10:17:31,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610092250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:31,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:31,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:17:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806867363] [2022-01-10 10:17:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:31,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:31,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:31,238 INFO L87 Difference]: Start difference. First operand 66262 states and 78563 transitions. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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 10:17:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:34,453 INFO L93 Difference]: Finished difference Result 139884 states and 165122 transitions. [2022-01-10 10:17:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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 1029 [2022-01-10 10:17:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:34,529 INFO L225 Difference]: With dead ends: 139884 [2022-01-10 10:17:34,529 INFO L226 Difference]: Without dead ends: 70352 [2022-01-10 10:17:34,565 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 10:17:34,565 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 928 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:34,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 1405 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 10:17:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70352 states. [2022-01-10 10:17:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70352 to 62172. [2022-01-10 10:17:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62172 states, 62171 states have (on average 1.1205385147415998) internal successors, (69665), 62171 states have internal predecessors, (69665), 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 10:17:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62172 states to 62172 states and 69665 transitions. [2022-01-10 10:17:35,335 INFO L78 Accepts]: Start accepts. Automaton has 62172 states and 69665 transitions. Word has length 1029 [2022-01-10 10:17:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:35,335 INFO L470 AbstractCegarLoop]: Abstraction has 62172 states and 69665 transitions. [2022-01-10 10:17:35,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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 10:17:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 62172 states and 69665 transitions. [2022-01-10 10:17:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2022-01-10 10:17:35,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:35,375 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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] [2022-01-10 10:17:35,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 10:17:35,375 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -576056786, now seen corresponding path program 1 times [2022-01-10 10:17:35,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:35,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137364746] [2022-01-10 10:17:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:35,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:17:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:17:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-01-10 10:17:35,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:17:35,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137364746] [2022-01-10 10:17:35,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137364746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:17:35,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:17:35,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:17:35,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531608119] [2022-01-10 10:17:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:17:35,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:17:35,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:17:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:17:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:17:35,824 INFO L87 Difference]: Start difference. First operand 62172 states and 69665 transitions. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 2 states have internal predecessors, (907), 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 10:17:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:17:39,241 INFO L93 Difference]: Finished difference Result 151336 states and 170724 transitions. [2022-01-10 10:17:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:17:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 2 states have internal predecessors, (907), 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 1040 [2022-01-10 10:17:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:17:39,357 INFO L225 Difference]: With dead ends: 151336 [2022-01-10 10:17:39,357 INFO L226 Difference]: Without dead ends: 89166 [2022-01-10 10:17:39,391 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 10:17:39,392 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 911 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 10:17:39,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 306 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 10:17:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89166 states. [2022-01-10 10:17:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89166 to 86712. [2022-01-10 10:17:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86712 states, 86711 states have (on average 1.1052230974155528) internal successors, (95835), 86711 states have internal predecessors, (95835), 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 10:17:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86712 states to 86712 states and 95835 transitions. [2022-01-10 10:17:40,326 INFO L78 Accepts]: Start accepts. Automaton has 86712 states and 95835 transitions. Word has length 1040 [2022-01-10 10:17:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:17:40,326 INFO L470 AbstractCegarLoop]: Abstraction has 86712 states and 95835 transitions. [2022-01-10 10:17:40,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 2 states have internal predecessors, (907), 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 10:17:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 86712 states and 95835 transitions. [2022-01-10 10:17:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1263 [2022-01-10 10:17:40,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:17:40,546 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:40,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 10:17:40,547 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:17:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:17:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -128445799, now seen corresponding path program 1 times [2022-01-10 10:17:40,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:17:40,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829825100] [2022-01-10 10:17:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:17:40,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms