/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:18:24,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:18:24,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:18:24,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 01:18:24,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:18:24,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:18:24,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:18:24,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:18:24,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:18:24,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:18:24,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:18:24,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:18:24,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:18:24,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:18:24,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:18:24,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:18:24,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:18:24,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:18:24,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:18:24,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:18:24,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:18:24,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:18:24,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:18:24,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:18:24,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:18:24,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:18:24,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:18:24,644 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:18:24,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:18:24,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:18:24,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:18:24,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:18:24,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:18:24,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:18:24,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:18:24,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:18:24,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:18:24,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:18:24,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:18:24,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:18:24,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:18:24,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:18:24,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:18:24,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:18:24,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:18:24,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:18:24,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:18:24,649 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:18:24,649 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:18:24,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:18:24,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:18:24,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:18:24,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:18:24,856 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:18:24,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c [2022-01-11 01:18:24,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ede7881b/797b64a998f84262a0e113ad99614506/FLAG4beecaddf [2022-01-11 01:18:25,587 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:18:25,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c [2022-01-11 01:18:25,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ede7881b/797b64a998f84262a0e113ad99614506/FLAG4beecaddf [2022-01-11 01:18:25,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ede7881b/797b64a998f84262a0e113ad99614506 [2022-01-11 01:18:25,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:18:25,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:18:25,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:18:25,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:18:25,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:18:25,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:18:25" (1/1) ... [2022-01-11 01:18:25,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9762d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:25, skipping insertion in model container [2022-01-11 01:18:25,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:18:25" (1/1) ... [2022-01-11 01:18:25,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:18:25,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:18:27,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c[382357,382370] [2022-01-11 01:18:27,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c[383339,383352] [2022-01-11 01:18:27,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:18:27,264 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:18:27,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c[382357,382370] [2022-01-11 01:18:27,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c[383339,383352] [2022-01-11 01:18:27,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:18:28,043 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:18:28,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28 WrapperNode [2022-01-11 01:18:28,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:18:28,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:18:28,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:18:28,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:18:28,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,522 INFO L137 Inliner]: procedures = 51, calls = 51, calls flagged for inlining = 46, calls inlined = 73, statements flattened = 13160 [2022-01-11 01:18:28,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:18:28,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:18:28,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:18:28,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:18:28,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:28,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:29,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:29,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:18:29,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:18:29,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:18:29,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:18:29,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (1/1) ... [2022-01-11 01:18:29,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:18:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:18:29,107 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) [2022-01-11 01:18:29,128 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 [2022-01-11 01:18:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:18:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:18:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:18:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:18:29,268 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:18:29,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:18:36,073 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:18:36,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:18:36,093 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-11 01:18:36,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:36 BoogieIcfgContainer [2022-01-11 01:18:36,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:18:36,097 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:18:36,097 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:18:36,098 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:18:36,100 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:36" (1/1) ... [2022-01-11 01:18:37,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:18:37 BasicIcfg [2022-01-11 01:18:37,218 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:18:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:18:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:18:37,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:18:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:18:25" (1/4) ... [2022-01-11 01:18:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422417aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:18:37, skipping insertion in model container [2022-01-11 01:18:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:28" (2/4) ... [2022-01-11 01:18:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422417aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:18:37, skipping insertion in model container [2022-01-11 01:18:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:36" (3/4) ... [2022-01-11 01:18:37,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422417aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:18:37, skipping insertion in model container [2022-01-11 01:18:37,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:18:37" (4/4) ... [2022-01-11 01:18:37,224 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-1.cTransformedIcfg [2022-01-11 01:18:37,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:18:37,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 01:18:37,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:18:37,279 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 [2022-01-11 01:18:37,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 01:18:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 2516 states, 2512 states have (on average 1.8288216560509554) internal successors, (4594), 2515 states have internal predecessors, (4594), 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) [2022-01-11 01:18:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:37,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:37,330 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] [2022-01-11 01:18:37,331 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -202657724, now seen corresponding path program 1 times [2022-01-11 01:18:37,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:37,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332974770] [2022-01-11 01:18:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:37,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:37,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332974770] [2022-01-11 01:18:37,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332974770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:37,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:37,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:37,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675558870] [2022-01-11 01:18:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:37,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:37,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:37,719 INFO L87 Difference]: Start difference. First operand has 2516 states, 2512 states have (on average 1.8288216560509554) internal successors, (4594), 2515 states have internal predecessors, (4594), 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 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:37,945 INFO L93 Difference]: Finished difference Result 5266 states and 9548 transitions. [2022-01-11 01:18:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:37,969 INFO L225 Difference]: With dead ends: 5266 [2022-01-11 01:18:37,970 INFO L226 Difference]: Without dead ends: 2690 [2022-01-11 01:18:37,978 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 [2022-01-11 01:18:37,983 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4457 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:37,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4457 Valid, 4910 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-11 01:18:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2686. [2022-01-11 01:18:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7897875512486023) internal successors, (4802), 2685 states have internal predecessors, (4802), 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) [2022-01-11 01:18:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4802 transitions. [2022-01-11 01:18:38,100 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4802 transitions. Word has length 66 [2022-01-11 01:18:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:38,100 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4802 transitions. [2022-01-11 01:18:38,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4802 transitions. [2022-01-11 01:18:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:38,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:38,109 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] [2022-01-11 01:18:38,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:18:38,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1062444132, now seen corresponding path program 1 times [2022-01-11 01:18:38,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:38,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028686203] [2022-01-11 01:18:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:38,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:38,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:38,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028686203] [2022-01-11 01:18:38,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028686203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:38,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:38,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:38,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279921896] [2022-01-11 01:18:38,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:38,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:38,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:38,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:38,190 INFO L87 Difference]: Start difference. First operand 2686 states and 4802 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:38,251 INFO L93 Difference]: Finished difference Result 3240 states and 5630 transitions. [2022-01-11 01:18:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:38,260 INFO L225 Difference]: With dead ends: 3240 [2022-01-11 01:18:38,261 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:38,264 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 [2022-01-11 01:18:38,265 INFO L933 BasicCegarLoop]: 4436 mSDtfsCounter, 4430 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:38,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 4436 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7868058143868804) internal successors, (4794), 2685 states have internal predecessors, (4794), 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) [2022-01-11 01:18:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4794 transitions. [2022-01-11 01:18:38,315 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4794 transitions. Word has length 66 [2022-01-11 01:18:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:38,315 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4794 transitions. [2022-01-11 01:18:38,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4794 transitions. [2022-01-11 01:18:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:38,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:38,320 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] [2022-01-11 01:18:38,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:18:38,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -282219452, now seen corresponding path program 1 times [2022-01-11 01:18:38,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755394600] [2022-01-11 01:18:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:38,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:38,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:38,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755394600] [2022-01-11 01:18:38,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755394600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:38,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:38,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:38,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766611618] [2022-01-11 01:18:38,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:38,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:38,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:38,400 INFO L87 Difference]: Start difference. First operand 2686 states and 4794 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:38,448 INFO L93 Difference]: Finished difference Result 3239 states and 5613 transitions. [2022-01-11 01:18:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:38,456 INFO L225 Difference]: With dead ends: 3239 [2022-01-11 01:18:38,457 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:38,461 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 [2022-01-11 01:18:38,463 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4424 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4424 SdHoareTripleChecker+Valid, 4431 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:38,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4424 Valid, 4431 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7838240775251584) internal successors, (4786), 2685 states have internal predecessors, (4786), 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) [2022-01-11 01:18:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4786 transitions. [2022-01-11 01:18:38,511 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4786 transitions. Word has length 66 [2022-01-11 01:18:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:38,511 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4786 transitions. [2022-01-11 01:18:38,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4786 transitions. [2022-01-11 01:18:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:38,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:38,513 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] [2022-01-11 01:18:38,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:18:38,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash 367140964, now seen corresponding path program 1 times [2022-01-11 01:18:38,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766802833] [2022-01-11 01:18:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:38,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:38,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:38,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766802833] [2022-01-11 01:18:38,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766802833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:38,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:38,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:38,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458816621] [2022-01-11 01:18:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:38,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:38,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:38,579 INFO L87 Difference]: Start difference. First operand 2686 states and 4786 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:38,633 INFO L93 Difference]: Finished difference Result 3238 states and 5596 transitions. [2022-01-11 01:18:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:38,642 INFO L225 Difference]: With dead ends: 3238 [2022-01-11 01:18:38,642 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:38,646 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 [2022-01-11 01:18:38,651 INFO L933 BasicCegarLoop]: 4426 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:38,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4426 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7808423406634364) internal successors, (4778), 2685 states have internal predecessors, (4778), 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) [2022-01-11 01:18:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4778 transitions. [2022-01-11 01:18:38,712 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4778 transitions. Word has length 66 [2022-01-11 01:18:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:38,713 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4778 transitions. [2022-01-11 01:18:38,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4778 transitions. [2022-01-11 01:18:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:38,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:38,714 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] [2022-01-11 01:18:38,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:18:38,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1967216572, now seen corresponding path program 1 times [2022-01-11 01:18:38,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:38,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736950840] [2022-01-11 01:18:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:38,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:38,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736950840] [2022-01-11 01:18:38,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736950840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:38,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:38,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:38,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321447757] [2022-01-11 01:18:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:38,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:38,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:38,766 INFO L87 Difference]: Start difference. First operand 2686 states and 4778 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:38,838 INFO L93 Difference]: Finished difference Result 3237 states and 5579 transitions. [2022-01-11 01:18:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:38,847 INFO L225 Difference]: With dead ends: 3237 [2022-01-11 01:18:38,847 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:38,849 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 [2022-01-11 01:18:38,849 INFO L933 BasicCegarLoop]: 4409 mSDtfsCounter, 4364 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 4447 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:38,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4364 Valid, 4447 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7741334327245621) internal successors, (4760), 2685 states have internal predecessors, (4760), 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) [2022-01-11 01:18:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4760 transitions. [2022-01-11 01:18:38,898 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4760 transitions. Word has length 66 [2022-01-11 01:18:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:38,901 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4760 transitions. [2022-01-11 01:18:38,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4760 transitions. [2022-01-11 01:18:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:38,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:38,903 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] [2022-01-11 01:18:38,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:18:38,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1856693731, now seen corresponding path program 1 times [2022-01-11 01:18:38,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:38,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958403191] [2022-01-11 01:18:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:38,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:38,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:38,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958403191] [2022-01-11 01:18:38,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958403191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:38,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:38,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:38,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710268905] [2022-01-11 01:18:38,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:38,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:38,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:38,955 INFO L87 Difference]: Start difference. First operand 2686 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:39,035 INFO L93 Difference]: Finished difference Result 3236 states and 5542 transitions. [2022-01-11 01:18:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:39,047 INFO L225 Difference]: With dead ends: 3236 [2022-01-11 01:18:39,047 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:39,050 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 [2022-01-11 01:18:39,051 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4353 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:39,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 4435 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7674245247856877) internal successors, (4742), 2685 states have internal predecessors, (4742), 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) [2022-01-11 01:18:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4742 transitions. [2022-01-11 01:18:39,118 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4742 transitions. Word has length 66 [2022-01-11 01:18:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:39,118 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4742 transitions. [2022-01-11 01:18:39,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4742 transitions. [2022-01-11 01:18:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:39,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:39,119 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] [2022-01-11 01:18:39,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:18:39,119 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1314655614, now seen corresponding path program 1 times [2022-01-11 01:18:39,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:39,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37477758] [2022-01-11 01:18:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:39,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:39,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:39,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37477758] [2022-01-11 01:18:39,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37477758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:39,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:39,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:39,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072874612] [2022-01-11 01:18:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:39,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:39,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:39,164 INFO L87 Difference]: Start difference. First operand 2686 states and 4742 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:39,259 INFO L93 Difference]: Finished difference Result 3235 states and 5505 transitions. [2022-01-11 01:18:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:39,270 INFO L225 Difference]: With dead ends: 3235 [2022-01-11 01:18:39,270 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:39,272 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 [2022-01-11 01:18:39,273 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 4342 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 4423 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:39,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4342 Valid, 4423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7607156168468132) internal successors, (4724), 2685 states have internal predecessors, (4724), 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) [2022-01-11 01:18:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4724 transitions. [2022-01-11 01:18:39,430 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4724 transitions. Word has length 66 [2022-01-11 01:18:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:39,430 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4724 transitions. [2022-01-11 01:18:39,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4724 transitions. [2022-01-11 01:18:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:39,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:39,435 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] [2022-01-11 01:18:39,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:18:39,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:39,435 INFO L85 PathProgramCache]: Analyzing trace with hash -720388447, now seen corresponding path program 1 times [2022-01-11 01:18:39,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:39,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288395324] [2022-01-11 01:18:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:39,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:39,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288395324] [2022-01-11 01:18:39,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288395324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:39,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:39,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:39,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596081625] [2022-01-11 01:18:39,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:39,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:39,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:39,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:39,478 INFO L87 Difference]: Start difference. First operand 2686 states and 4724 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:39,545 INFO L93 Difference]: Finished difference Result 3234 states and 5468 transitions. [2022-01-11 01:18:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:39,553 INFO L225 Difference]: With dead ends: 3234 [2022-01-11 01:18:39,554 INFO L226 Difference]: Without dead ends: 2686 [2022-01-11 01:18:39,555 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 [2022-01-11 01:18:39,555 INFO L933 BasicCegarLoop]: 4376 mSDtfsCounter, 4331 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:39,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4331 Valid, 4411 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-11 01:18:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-11 01:18:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.754006708907939) internal successors, (4706), 2685 states have internal predecessors, (4706), 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) [2022-01-11 01:18:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4706 transitions. [2022-01-11 01:18:39,607 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4706 transitions. Word has length 66 [2022-01-11 01:18:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:39,609 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4706 transitions. [2022-01-11 01:18:39,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4706 transitions. [2022-01-11 01:18:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:18:39,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:39,610 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] [2022-01-11 01:18:39,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:18:39,610 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1238681983, now seen corresponding path program 1 times [2022-01-11 01:18:39,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764321080] [2022-01-11 01:18:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:39,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:39,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764321080] [2022-01-11 01:18:39,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764321080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:39,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:39,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:39,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789720812] [2022-01-11 01:18:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:39,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:39,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:39,655 INFO L87 Difference]: Start difference. First operand 2686 states and 4706 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:39,737 INFO L93 Difference]: Finished difference Result 3710 states and 6065 transitions. [2022-01-11 01:18:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:39,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2022-01-11 01:18:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:39,757 INFO L225 Difference]: With dead ends: 3710 [2022-01-11 01:18:39,758 INFO L226 Difference]: Without dead ends: 3164 [2022-01-11 01:18:39,760 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 [2022-01-11 01:18:39,761 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4291 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:39,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4722 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-11 01:18:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3110. [2022-01-11 01:18:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3107 states have (on average 1.6919858384293531) internal successors, (5257), 3109 states have internal predecessors, (5257), 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) [2022-01-11 01:18:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5257 transitions. [2022-01-11 01:18:39,829 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5257 transitions. Word has length 66 [2022-01-11 01:18:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:39,829 INFO L470 AbstractCegarLoop]: Abstraction has 3110 states and 5257 transitions. [2022-01-11 01:18:39,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2022-01-11 01:18:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5257 transitions. [2022-01-11 01:18:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:18:39,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:39,833 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:39,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:18:39,834 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash 945473165, now seen corresponding path program 1 times [2022-01-11 01:18:39,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:39,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689483603] [2022-01-11 01:18:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:39,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:39,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:39,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689483603] [2022-01-11 01:18:39,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689483603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:39,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:39,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:39,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681567497] [2022-01-11 01:18:39,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:39,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:39,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:39,883 INFO L87 Difference]: Start difference. First operand 3110 states and 5257 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-01-11 01:18:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:40,018 INFO L93 Difference]: Finished difference Result 4950 states and 7688 transitions. [2022-01-11 01:18:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-01-11 01:18:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:40,027 INFO L225 Difference]: With dead ends: 4950 [2022-01-11 01:18:40,027 INFO L226 Difference]: Without dead ends: 3986 [2022-01-11 01:18:40,029 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 [2022-01-11 01:18:40,030 INFO L933 BasicCegarLoop]: 4374 mSDtfsCounter, 4309 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:40,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4309 Valid, 4719 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-01-11 01:18:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3894. [2022-01-11 01:18:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3891 states have (on average 1.61526599845798) internal successors, (6285), 3893 states have internal predecessors, (6285), 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) [2022-01-11 01:18:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 6285 transitions. [2022-01-11 01:18:40,150 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 6285 transitions. Word has length 106 [2022-01-11 01:18:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:40,150 INFO L470 AbstractCegarLoop]: Abstraction has 3894 states and 6285 transitions. [2022-01-11 01:18:40,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-01-11 01:18:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 6285 transitions. [2022-01-11 01:18:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:18:40,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:40,152 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:40,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:18:40,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash 426970764, now seen corresponding path program 1 times [2022-01-11 01:18:40,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:40,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516053225] [2022-01-11 01:18:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:40,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:40,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516053225] [2022-01-11 01:18:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516053225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:40,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128207782] [2022-01-11 01:18:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:40,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:40,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:40,198 INFO L87 Difference]: Start difference. First operand 3894 states and 6285 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-01-11 01:18:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:40,361 INFO L93 Difference]: Finished difference Result 7251 states and 10656 transitions. [2022-01-11 01:18:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:40,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-01-11 01:18:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:40,372 INFO L225 Difference]: With dead ends: 7251 [2022-01-11 01:18:40,372 INFO L226 Difference]: Without dead ends: 5531 [2022-01-11 01:18:40,376 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 [2022-01-11 01:18:40,377 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 4318 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:40,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4318 Valid, 4865 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2022-01-11 01:18:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5455. [2022-01-11 01:18:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5452 states have (on average 1.516140865737344) internal successors, (8266), 5454 states have internal predecessors, (8266), 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) [2022-01-11 01:18:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 8266 transitions. [2022-01-11 01:18:40,635 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 8266 transitions. Word has length 106 [2022-01-11 01:18:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:40,636 INFO L470 AbstractCegarLoop]: Abstraction has 5455 states and 8266 transitions. [2022-01-11 01:18:40,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-01-11 01:18:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 8266 transitions. [2022-01-11 01:18:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:18:40,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:40,639 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:40,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:18:40,639 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -420964564, now seen corresponding path program 1 times [2022-01-11 01:18:40,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:40,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093067420] [2022-01-11 01:18:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:40,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:40,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093067420] [2022-01-11 01:18:40,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093067420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:40,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:40,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:40,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775105663] [2022-01-11 01:18:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:40,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:40,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:40,673 INFO L87 Difference]: Start difference. First operand 5455 states and 8266 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-11 01:18:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:40,838 INFO L93 Difference]: Finished difference Result 8713 states and 12484 transitions. [2022-01-11 01:18:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 106 [2022-01-11 01:18:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:40,848 INFO L225 Difference]: With dead ends: 8713 [2022-01-11 01:18:40,849 INFO L226 Difference]: Without dead ends: 5408 [2022-01-11 01:18:40,854 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 [2022-01-11 01:18:40,855 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 419 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 8339 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:40,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 8339 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2022-01-11 01:18:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5408. [2022-01-11 01:18:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 1.518963922294172) internal successors, (8210), 5407 states have internal predecessors, (8210), 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) [2022-01-11 01:18:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 8210 transitions. [2022-01-11 01:18:41,036 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 8210 transitions. Word has length 106 [2022-01-11 01:18:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:41,037 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 8210 transitions. [2022-01-11 01:18:41,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-11 01:18:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 8210 transitions. [2022-01-11 01:18:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:18:41,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:41,040 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:41,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:18:41,040 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1577245362, now seen corresponding path program 1 times [2022-01-11 01:18:41,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:41,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402998302] [2022-01-11 01:18:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:41,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:41,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:41,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402998302] [2022-01-11 01:18:41,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402998302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:41,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:41,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:41,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487501537] [2022-01-11 01:18:41,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:41,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:41,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:41,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:41,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:41,085 INFO L87 Difference]: Start difference. First operand 5408 states and 8210 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2022-01-11 01:18:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:41,363 INFO L93 Difference]: Finished difference Result 11514 states and 16083 transitions. [2022-01-11 01:18:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2022-01-11 01:18:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:41,379 INFO L225 Difference]: With dead ends: 11514 [2022-01-11 01:18:41,379 INFO L226 Difference]: Without dead ends: 8280 [2022-01-11 01:18:41,387 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 [2022-01-11 01:18:41,388 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4317 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 4874 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:41,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 4874 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2022-01-11 01:18:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8100. [2022-01-11 01:18:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 8097 states have (on average 1.4359639372607138) internal successors, (11627), 8099 states have internal predecessors, (11627), 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) [2022-01-11 01:18:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 11627 transitions. [2022-01-11 01:18:41,739 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 11627 transitions. Word has length 107 [2022-01-11 01:18:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:41,739 INFO L470 AbstractCegarLoop]: Abstraction has 8100 states and 11627 transitions. [2022-01-11 01:18:41,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2022-01-11 01:18:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 11627 transitions. [2022-01-11 01:18:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:18:41,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:41,742 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:41,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:18:41,743 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -559026773, now seen corresponding path program 1 times [2022-01-11 01:18:41,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:41,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152412980] [2022-01-11 01:18:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:41,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:41,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:41,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152412980] [2022-01-11 01:18:41,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152412980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:41,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:41,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:41,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38999882] [2022-01-11 01:18:41,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:41,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:41,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:41,768 INFO L87 Difference]: Start difference. First operand 8100 states and 11627 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-01-11 01:18:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:41,985 INFO L93 Difference]: Finished difference Result 13997 states and 19200 transitions. [2022-01-11 01:18:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 107 [2022-01-11 01:18:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:42,001 INFO L225 Difference]: With dead ends: 13997 [2022-01-11 01:18:42,001 INFO L226 Difference]: Without dead ends: 8054 [2022-01-11 01:18:42,010 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 [2022-01-11 01:18:42,010 INFO L933 BasicCegarLoop]: 4380 mSDtfsCounter, 417 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 8338 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 8338 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2022-01-11 01:18:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 8054. [2022-01-11 01:18:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8054 states, 8051 states have (on average 1.4374611849459695) internal successors, (11573), 8053 states have internal predecessors, (11573), 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) [2022-01-11 01:18:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8054 states to 8054 states and 11573 transitions. [2022-01-11 01:18:42,267 INFO L78 Accepts]: Start accepts. Automaton has 8054 states and 11573 transitions. Word has length 107 [2022-01-11 01:18:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:42,267 INFO L470 AbstractCegarLoop]: Abstraction has 8054 states and 11573 transitions. [2022-01-11 01:18:42,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-01-11 01:18:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8054 states and 11573 transitions. [2022-01-11 01:18:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:18:42,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:42,270 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:42,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:18:42,270 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1069271650, now seen corresponding path program 1 times [2022-01-11 01:18:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603623937] [2022-01-11 01:18:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:42,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:42,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:42,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603623937] [2022-01-11 01:18:42,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603623937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:42,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:42,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:42,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192984475] [2022-01-11 01:18:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:42,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:42,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:42,308 INFO L87 Difference]: Start difference. First operand 8054 states and 11573 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-01-11 01:18:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:42,783 INFO L93 Difference]: Finished difference Result 18867 states and 25404 transitions. [2022-01-11 01:18:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-01-11 01:18:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:42,811 INFO L225 Difference]: With dead ends: 18867 [2022-01-11 01:18:42,812 INFO L226 Difference]: Without dead ends: 12987 [2022-01-11 01:18:42,825 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 [2022-01-11 01:18:42,826 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4316 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4844 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:42,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 4844 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-01-11 01:18:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12855. [2022-01-11 01:18:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12855 states, 12852 states have (on average 1.3744164332399627) internal successors, (17664), 12854 states have internal predecessors, (17664), 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) [2022-01-11 01:18:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12855 states to 12855 states and 17664 transitions. [2022-01-11 01:18:43,356 INFO L78 Accepts]: Start accepts. Automaton has 12855 states and 17664 transitions. Word has length 108 [2022-01-11 01:18:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:43,356 INFO L470 AbstractCegarLoop]: Abstraction has 12855 states and 17664 transitions. [2022-01-11 01:18:43,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-01-11 01:18:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12855 states and 17664 transitions. [2022-01-11 01:18:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:18:43,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:43,361 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:43,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:18:43,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:43,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1630234431, now seen corresponding path program 1 times [2022-01-11 01:18:43,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901136746] [2022-01-11 01:18:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:43,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:43,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:43,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901136746] [2022-01-11 01:18:43,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901136746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:43,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:43,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:43,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636117027] [2022-01-11 01:18:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:43,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:43,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:43,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:43,391 INFO L87 Difference]: Start difference. First operand 12855 states and 17664 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-01-11 01:18:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:43,872 INFO L93 Difference]: Finished difference Result 23501 states and 31268 transitions. [2022-01-11 01:18:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 108 [2022-01-11 01:18:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:43,900 INFO L225 Difference]: With dead ends: 23501 [2022-01-11 01:18:43,900 INFO L226 Difference]: Without dead ends: 12810 [2022-01-11 01:18:43,914 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 [2022-01-11 01:18:43,916 INFO L933 BasicCegarLoop]: 4379 mSDtfsCounter, 415 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:43,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 8337 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-01-11 01:18:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 12810. [2022-01-11 01:18:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12810 states, 12807 states have (on average 1.3751854454595143) internal successors, (17612), 12809 states have internal predecessors, (17612), 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) [2022-01-11 01:18:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12810 states to 12810 states and 17612 transitions. [2022-01-11 01:18:44,460 INFO L78 Accepts]: Start accepts. Automaton has 12810 states and 17612 transitions. Word has length 108 [2022-01-11 01:18:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:44,460 INFO L470 AbstractCegarLoop]: Abstraction has 12810 states and 17612 transitions. [2022-01-11 01:18:44,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-01-11 01:18:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12810 states and 17612 transitions. [2022-01-11 01:18:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 01:18:44,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:44,466 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:44,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:18:44,466 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2102120895, now seen corresponding path program 1 times [2022-01-11 01:18:44,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:44,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552060613] [2022-01-11 01:18:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:44,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:44,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552060613] [2022-01-11 01:18:44,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552060613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:44,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:44,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:44,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407123346] [2022-01-11 01:18:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:44,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:44,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:44,500 INFO L87 Difference]: Start difference. First operand 12810 states and 17612 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-01-11 01:18:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:45,093 INFO L93 Difference]: Finished difference Result 32670 states and 42820 transitions. [2022-01-11 01:18:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-01-11 01:18:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:45,137 INFO L225 Difference]: With dead ends: 32670 [2022-01-11 01:18:45,137 INFO L226 Difference]: Without dead ends: 22034 [2022-01-11 01:18:45,157 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 [2022-01-11 01:18:45,157 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 337 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 9077 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:45,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 9077 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22034 states. [2022-01-11 01:18:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22034 to 22034. [2022-01-11 01:18:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22034 states, 22031 states have (on average 1.3149652762017157) internal successors, (28970), 22033 states have internal predecessors, (28970), 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) [2022-01-11 01:18:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22034 states to 22034 states and 28970 transitions. [2022-01-11 01:18:45,962 INFO L78 Accepts]: Start accepts. Automaton has 22034 states and 28970 transitions. Word has length 109 [2022-01-11 01:18:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:45,963 INFO L470 AbstractCegarLoop]: Abstraction has 22034 states and 28970 transitions. [2022-01-11 01:18:45,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-01-11 01:18:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22034 states and 28970 transitions. [2022-01-11 01:18:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:18:45,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:45,975 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:45,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:18:45,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -213855212, now seen corresponding path program 1 times [2022-01-11 01:18:45,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053369280] [2022-01-11 01:18:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:45,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:46,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:46,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053369280] [2022-01-11 01:18:46,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053369280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:46,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:46,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:46,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844225140] [2022-01-11 01:18:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:46,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:46,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:46,018 INFO L87 Difference]: Start difference. First operand 22034 states and 28970 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2022-01-11 01:18:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:47,017 INFO L93 Difference]: Finished difference Result 50724 states and 64950 transitions. [2022-01-11 01:18:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2022-01-11 01:18:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:47,079 INFO L225 Difference]: With dead ends: 50724 [2022-01-11 01:18:47,079 INFO L226 Difference]: Without dead ends: 30868 [2022-01-11 01:18:47,111 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 [2022-01-11 01:18:47,111 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4218 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4218 SdHoareTripleChecker+Valid, 4716 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4218 Valid, 4716 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30868 states. [2022-01-11 01:18:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30868 to 30736. [2022-01-11 01:18:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30736 states, 30733 states have (on average 1.2900139914749618) internal successors, (39646), 30735 states have internal predecessors, (39646), 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) [2022-01-11 01:18:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30736 states to 30736 states and 39646 transitions. [2022-01-11 01:18:48,204 INFO L78 Accepts]: Start accepts. Automaton has 30736 states and 39646 transitions. Word has length 140 [2022-01-11 01:18:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:48,204 INFO L470 AbstractCegarLoop]: Abstraction has 30736 states and 39646 transitions. [2022-01-11 01:18:48,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2022-01-11 01:18:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 30736 states and 39646 transitions. [2022-01-11 01:18:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:18:48,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:48,222 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 01:18:48,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:18:48,222 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 647066896, now seen corresponding path program 1 times [2022-01-11 01:18:48,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979542798] [2022-01-11 01:18:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:48,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:48,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979542798] [2022-01-11 01:18:48,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979542798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:48,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:48,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:48,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582995060] [2022-01-11 01:18:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:48,273 INFO L87 Difference]: Start difference. First operand 30736 states and 39646 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2022-01-11 01:18:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:49,676 INFO L93 Difference]: Finished difference Result 72036 states and 91140 transitions. [2022-01-11 01:18:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2022-01-11 01:18:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:49,755 INFO L225 Difference]: With dead ends: 72036 [2022-01-11 01:18:49,755 INFO L226 Difference]: Without dead ends: 43490 [2022-01-11 01:18:49,786 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 [2022-01-11 01:18:49,786 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 4220 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:49,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 4714 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43490 states. [2022-01-11 01:18:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43490 to 43294. [2022-01-11 01:18:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43294 states, 43291 states have (on average 1.2707953154235292) internal successors, (55014), 43293 states have internal predecessors, (55014), 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) [2022-01-11 01:18:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43294 states to 43294 states and 55014 transitions. [2022-01-11 01:18:51,320 INFO L78 Accepts]: Start accepts. Automaton has 43294 states and 55014 transitions. Word has length 140 [2022-01-11 01:18:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,320 INFO L470 AbstractCegarLoop]: Abstraction has 43294 states and 55014 transitions. [2022-01-11 01:18:51,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2022-01-11 01:18:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43294 states and 55014 transitions. [2022-01-11 01:18:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 01:18:51,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,353 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:18:51,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:18:51,353 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2029344296, now seen corresponding path program 1 times [2022-01-11 01:18:51,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862137717] [2022-01-11 01:18:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 01:18:51,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862137717] [2022-01-11 01:18:51,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862137717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:51,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041454904] [2022-01-11 01:18:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:51,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:51,385 INFO L87 Difference]: Start difference. First operand 43294 states and 55014 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-01-11 01:18:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:52,716 INFO L93 Difference]: Finished difference Result 75848 states and 95600 transitions. [2022-01-11 01:18:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:52,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 157 [2022-01-11 01:18:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:52,802 INFO L225 Difference]: With dead ends: 75848 [2022-01-11 01:18:52,803 INFO L226 Difference]: Without dead ends: 44146 [2022-01-11 01:18:52,838 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 [2022-01-11 01:18:52,841 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4278 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:52,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4278 Valid, 4775 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44146 states. [2022-01-11 01:18:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44146 to 42574. [2022-01-11 01:18:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2545159850602523) internal successors, (53406), 42573 states have internal predecessors, (53406), 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) [2022-01-11 01:18:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 53406 transitions. [2022-01-11 01:18:54,576 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 53406 transitions. Word has length 157 [2022-01-11 01:18:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:54,576 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 53406 transitions. [2022-01-11 01:18:54,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-01-11 01:18:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 53406 transitions. [2022-01-11 01:18:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:18:54,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:54,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-11 01:18:54,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:18:54,601 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:54,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1177354213, now seen corresponding path program 1 times [2022-01-11 01:18:54,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:54,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580673874] [2022-01-11 01:18:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:54,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 01:18:54,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:54,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580673874] [2022-01-11 01:18:54,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580673874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:54,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:54,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:54,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998844423] [2022-01-11 01:18:54,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:54,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:54,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:54,634 INFO L87 Difference]: Start difference. First operand 42574 states and 53406 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-01-11 01:18:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:55,902 INFO L93 Difference]: Finished difference Result 82934 states and 102750 transitions. [2022-01-11 01:18:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:55,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 158 [2022-01-11 01:18:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:55,969 INFO L225 Difference]: With dead ends: 82934 [2022-01-11 01:18:55,969 INFO L226 Difference]: Without dead ends: 42578 [2022-01-11 01:18:56,004 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 [2022-01-11 01:18:56,005 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 298 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 9001 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:56,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 9001 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-11 01:18:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-11 01:18:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2460595240891688) internal successors, (53046), 42573 states have internal predecessors, (53046), 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) [2022-01-11 01:18:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 53046 transitions. [2022-01-11 01:18:57,591 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 53046 transitions. Word has length 158 [2022-01-11 01:18:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:57,591 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 53046 transitions. [2022-01-11 01:18:57,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-01-11 01:18:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 53046 transitions. [2022-01-11 01:18:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:18:57,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:57,611 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-11 01:18:57,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:18:57,611 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2131487745, now seen corresponding path program 1 times [2022-01-11 01:18:57,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80068136] [2022-01-11 01:18:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:57,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:57,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80068136] [2022-01-11 01:18:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80068136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:57,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:57,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:57,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657862700] [2022-01-11 01:18:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:57,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:57,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:57,648 INFO L87 Difference]: Start difference. First operand 42574 states and 53046 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:18:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:59,036 INFO L93 Difference]: Finished difference Result 70638 states and 87354 transitions. [2022-01-11 01:18:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-01-11 01:18:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:59,097 INFO L225 Difference]: With dead ends: 70638 [2022-01-11 01:18:59,097 INFO L226 Difference]: Without dead ends: 42578 [2022-01-11 01:18:59,115 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 [2022-01-11 01:18:59,116 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 293 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 9016 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:59,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 9016 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-11 01:19:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-11 01:19:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2421131756359964) internal successors, (52878), 42573 states have internal predecessors, (52878), 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) [2022-01-11 01:19:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52878 transitions. [2022-01-11 01:19:00,546 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52878 transitions. Word has length 158 [2022-01-11 01:19:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:00,546 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52878 transitions. [2022-01-11 01:19:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:19:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52878 transitions. [2022-01-11 01:19:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:19:00,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:00,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-11 01:19:00,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:19:00,566 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 737639735, now seen corresponding path program 1 times [2022-01-11 01:19:00,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:00,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709084004] [2022-01-11 01:19:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:00,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:00,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:00,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709084004] [2022-01-11 01:19:00,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709084004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:00,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:00,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:00,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479218330] [2022-01-11 01:19:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:00,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:00,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:00,598 INFO L87 Difference]: Start difference. First operand 42574 states and 52878 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:19:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:01,951 INFO L93 Difference]: Finished difference Result 70614 states and 87026 transitions. [2022-01-11 01:19:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:01,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-01-11 01:19:01,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:02,009 INFO L225 Difference]: With dead ends: 70614 [2022-01-11 01:19:02,009 INFO L226 Difference]: Without dead ends: 42578 [2022-01-11 01:19:02,036 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 [2022-01-11 01:19:02,036 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 293 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 9030 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:02,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 9030 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-11 01:19:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-11 01:19:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2392943553123017) internal successors, (52758), 42573 states have internal predecessors, (52758), 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) [2022-01-11 01:19:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52758 transitions. [2022-01-11 01:19:03,876 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52758 transitions. Word has length 158 [2022-01-11 01:19:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:03,877 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52758 transitions. [2022-01-11 01:19:03,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:19:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52758 transitions. [2022-01-11 01:19:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:19:03,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:03,895 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:03,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:19:03,895 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -343394932, now seen corresponding path program 1 times [2022-01-11 01:19:03,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:03,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862585770] [2022-01-11 01:19:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:03,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:19:03,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:03,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862585770] [2022-01-11 01:19:03,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862585770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:03,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:03,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:03,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033823301] [2022-01-11 01:19:03,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:03,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:03,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:03,946 INFO L87 Difference]: Start difference. First operand 42574 states and 52758 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-01-11 01:19:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:05,305 INFO L93 Difference]: Finished difference Result 66258 states and 81816 transitions. [2022-01-11 01:19:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 158 [2022-01-11 01:19:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:05,367 INFO L225 Difference]: With dead ends: 66258 [2022-01-11 01:19:05,367 INFO L226 Difference]: Without dead ends: 44434 [2022-01-11 01:19:05,393 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 [2022-01-11 01:19:05,393 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 347 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 8912 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:05,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 8912 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44434 states. [2022-01-11 01:19:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44434 to 42574. [2022-01-11 01:19:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2260458997909376) internal successors, (52194), 42573 states have internal predecessors, (52194), 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) [2022-01-11 01:19:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52194 transitions. [2022-01-11 01:19:06,975 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52194 transitions. Word has length 158 [2022-01-11 01:19:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:06,975 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52194 transitions. [2022-01-11 01:19:06,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-01-11 01:19:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52194 transitions. [2022-01-11 01:19:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:19:06,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:06,993 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:06,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:19:06,993 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1372551687, now seen corresponding path program 1 times [2022-01-11 01:19:06,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:06,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871254334] [2022-01-11 01:19:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:06,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:07,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871254334] [2022-01-11 01:19:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871254334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:07,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:07,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:07,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500523428] [2022-01-11 01:19:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:07,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:07,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:07,031 INFO L87 Difference]: Start difference. First operand 42574 states and 52194 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:19:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:08,501 INFO L93 Difference]: Finished difference Result 70806 states and 86022 transitions. [2022-01-11 01:19:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-01-11 01:19:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:08,554 INFO L225 Difference]: With dead ends: 70806 [2022-01-11 01:19:08,554 INFO L226 Difference]: Without dead ends: 42770 [2022-01-11 01:19:08,579 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 [2022-01-11 01:19:08,579 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 322 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 8970 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:08,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 8970 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42770 states. [2022-01-11 01:19:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42770 to 42574. [2022-01-11 01:19:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2087571351389443) internal successors, (51458), 42573 states have internal predecessors, (51458), 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) [2022-01-11 01:19:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 51458 transitions. [2022-01-11 01:19:10,056 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 51458 transitions. Word has length 158 [2022-01-11 01:19:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:10,056 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 51458 transitions. [2022-01-11 01:19:10,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2022-01-11 01:19:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 51458 transitions. [2022-01-11 01:19:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:19:10,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:10,074 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:10,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:19:10,074 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1280133448, now seen corresponding path program 1 times [2022-01-11 01:19:10,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394893279] [2022-01-11 01:19:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:10,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:10,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:10,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394893279] [2022-01-11 01:19:10,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394893279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:10,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:10,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:10,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564467020] [2022-01-11 01:19:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:10,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:10,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:10,112 INFO L87 Difference]: Start difference. First operand 42574 states and 51458 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 01:19:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:11,302 INFO L93 Difference]: Finished difference Result 73686 states and 88146 transitions. [2022-01-11 01:19:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-01-11 01:19:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:11,348 INFO L225 Difference]: With dead ends: 73686 [2022-01-11 01:19:11,349 INFO L226 Difference]: Without dead ends: 33330 [2022-01-11 01:19:11,385 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 [2022-01-11 01:19:11,386 INFO L933 BasicCegarLoop]: 4648 mSDtfsCounter, 296 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:11,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 8942 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33330 states. [2022-01-11 01:19:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33330 to 33182. [2022-01-11 01:19:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33182 states, 33179 states have (on average 1.2068477048735646) internal successors, (40042), 33181 states have internal predecessors, (40042), 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) [2022-01-11 01:19:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33182 states to 33182 states and 40042 transitions. [2022-01-11 01:19:12,693 INFO L78 Accepts]: Start accepts. Automaton has 33182 states and 40042 transitions. Word has length 159 [2022-01-11 01:19:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:12,694 INFO L470 AbstractCegarLoop]: Abstraction has 33182 states and 40042 transitions. [2022-01-11 01:19:12,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 01:19:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 33182 states and 40042 transitions. [2022-01-11 01:19:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:19:12,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:12,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:12,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:19:12,706 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash -111634237, now seen corresponding path program 1 times [2022-01-11 01:19:12,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:12,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933484783] [2022-01-11 01:19:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:12,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:12,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933484783] [2022-01-11 01:19:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933484783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:12,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:12,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34616926] [2022-01-11 01:19:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:12,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:12,913 INFO L87 Difference]: Start difference. First operand 33182 states and 40042 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 01:19:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:14,075 INFO L93 Difference]: Finished difference Result 54842 states and 65334 transitions. [2022-01-11 01:19:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-01-11 01:19:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:14,125 INFO L225 Difference]: With dead ends: 54842 [2022-01-11 01:19:14,125 INFO L226 Difference]: Without dead ends: 33330 [2022-01-11 01:19:14,139 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 [2022-01-11 01:19:14,140 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 323 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 8949 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:14,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 8949 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33330 states. [2022-01-11 01:19:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33330 to 33182. [2022-01-11 01:19:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33182 states, 33179 states have (on average 1.1898490008740468) internal successors, (39478), 33181 states have internal predecessors, (39478), 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) [2022-01-11 01:19:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33182 states to 33182 states and 39478 transitions. [2022-01-11 01:19:15,405 INFO L78 Accepts]: Start accepts. Automaton has 33182 states and 39478 transitions. Word has length 159 [2022-01-11 01:19:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:15,405 INFO L470 AbstractCegarLoop]: Abstraction has 33182 states and 39478 transitions. [2022-01-11 01:19:15,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 01:19:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 33182 states and 39478 transitions. [2022-01-11 01:19:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:19:15,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:15,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:15,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:19:15,416 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1063421134, now seen corresponding path program 1 times [2022-01-11 01:19:15,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625251130] [2022-01-11 01:19:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:15,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:19:15,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625251130] [2022-01-11 01:19:15,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625251130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:15,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:15,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:19:15,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358047708] [2022-01-11 01:19:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:15,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:19:15,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:19:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:19:15,471 INFO L87 Difference]: Start difference. First operand 33182 states and 39478 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2022-01-11 01:19:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:17,082 INFO L93 Difference]: Finished difference Result 57993 states and 68011 transitions. [2022-01-11 01:19:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:19:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 160 [2022-01-11 01:19:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:17,118 INFO L225 Difference]: With dead ends: 57993 [2022-01-11 01:19:17,118 INFO L226 Difference]: Without dead ends: 26955 [2022-01-11 01:19:17,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:19:17,134 INFO L933 BasicCegarLoop]: 4418 mSDtfsCounter, 1107 mSDsluCounter, 12476 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 16894 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:17,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 16894 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26955 states. [2022-01-11 01:19:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26955 to 23681. [2022-01-11 01:19:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23681 states, 23678 states have (on average 1.1926260663907424) internal successors, (28239), 23680 states have internal predecessors, (28239), 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) [2022-01-11 01:19:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23681 states to 23681 states and 28239 transitions. [2022-01-11 01:19:18,171 INFO L78 Accepts]: Start accepts. Automaton has 23681 states and 28239 transitions. Word has length 160 [2022-01-11 01:19:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:18,171 INFO L470 AbstractCegarLoop]: Abstraction has 23681 states and 28239 transitions. [2022-01-11 01:19:18,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2022-01-11 01:19:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 23681 states and 28239 transitions. [2022-01-11 01:19:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:19:18,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:18,181 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 01:19:18,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:19:18,181 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash -253730100, now seen corresponding path program 1 times [2022-01-11 01:19:18,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:18,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558159689] [2022-01-11 01:19:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:18,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 01:19:18,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558159689] [2022-01-11 01:19:18,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558159689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:18,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:18,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:19:18,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829016384] [2022-01-11 01:19:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:18,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:19:18,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:19:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:19:18,244 INFO L87 Difference]: Start difference. First operand 23681 states and 28239 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2022-01-11 01:19:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:19,410 INFO L93 Difference]: Finished difference Result 45503 states and 52830 transitions. [2022-01-11 01:19:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:19:19,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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 160 [2022-01-11 01:19:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:19,447 INFO L225 Difference]: With dead ends: 45503 [2022-01-11 01:19:19,448 INFO L226 Difference]: Without dead ends: 23984 [2022-01-11 01:19:19,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:19:19,467 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 872 mSDsluCounter, 12679 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 17044 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:19,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 17044 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:19:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23984 states. [2022-01-11 01:19:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23984 to 20228. [2022-01-11 01:19:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20228 states, 20225 states have (on average 1.1853152039555006) internal successors, (23973), 20227 states have internal predecessors, (23973), 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) [2022-01-11 01:19:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20228 states to 20228 states and 23973 transitions. [2022-01-11 01:19:20,524 INFO L78 Accepts]: Start accepts. Automaton has 20228 states and 23973 transitions. Word has length 160 [2022-01-11 01:19:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:20,524 INFO L470 AbstractCegarLoop]: Abstraction has 20228 states and 23973 transitions. [2022-01-11 01:19:20,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2022-01-11 01:19:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20228 states and 23973 transitions. [2022-01-11 01:19:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-11 01:19:20,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:20,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:20,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:19:20,535 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1028031953, now seen corresponding path program 1 times [2022-01-11 01:19:20,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:20,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236470064] [2022-01-11 01:19:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:20,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-11 01:19:20,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236470064] [2022-01-11 01:19:20,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236470064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:20,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:20,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:19:20,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189269215] [2022-01-11 01:19:20,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:20,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:19:20,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:19:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:19:20,600 INFO L87 Difference]: Start difference. First operand 20228 states and 23973 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2022-01-11 01:19:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:21,646 INFO L93 Difference]: Finished difference Result 38093 states and 43689 transitions. [2022-01-11 01:19:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:19:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 199 [2022-01-11 01:19:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:21,679 INFO L225 Difference]: With dead ends: 38093 [2022-01-11 01:19:21,679 INFO L226 Difference]: Without dead ends: 20015 [2022-01-11 01:19:21,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:19:21,697 INFO L933 BasicCegarLoop]: 4337 mSDtfsCounter, 1003 mSDsluCounter, 12429 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 16766 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:21,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 16766 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:19:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20015 states.