/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:12:31,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:12:31,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:12:31,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:12:31,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:12:31,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:12:31,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:12:31,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:12:31,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:12:31,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:12:31,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:12:31,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:12:31,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:12:31,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:12:31,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:12:31,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:12:31,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:12:31,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:12:31,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:12:31,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:12:31,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 14:12:31,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:12:31,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:12:31,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:12:31,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:12:31,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:12:31,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:12:31,320 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:12:31,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:12:31,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:12:31,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:12:31,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:12:31,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:12:31,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:12:31,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:12:31,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:12:31,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:12:31,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:12:31,324 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:12:31,324 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:12:31,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:12:31,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:12:31,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:12:31,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:12:31,550 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:12:31,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2022-01-10 14:12:31,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d1882d2/b5c4d8fdd5f9494b9a138766d46d2fb2/FLAGa91dfe463 [2022-01-10 14:12:32,135 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:12:32,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2022-01-10 14:12:32,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d1882d2/b5c4d8fdd5f9494b9a138766d46d2fb2/FLAGa91dfe463 [2022-01-10 14:12:32,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d1882d2/b5c4d8fdd5f9494b9a138766d46d2fb2 [2022-01-10 14:12:32,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:12:32,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:12:32,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:12:32,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:12:32,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:12:32,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:32,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d89202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32, skipping insertion in model container [2022-01-10 14:12:32,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:32,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:12:32,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:12:32,723 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2022-01-10 14:12:32,785 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2022-01-10 14:12:32,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:12:32,908 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:12:32,917 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2022-01-10 14:12:32,948 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2022-01-10 14:12:32,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:12:32,998 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:12:32,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32 WrapperNode [2022-01-10 14:12:32,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:12:32,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:12:32,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:12:33,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:12:33,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,074 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 76, calls inlined = 184, statements flattened = 2659 [2022-01-10 14:12:33,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:12:33,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:12:33,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:12:33,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:12:33,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:12:33,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:12:33,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:12:33,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:12:33,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (1/1) ... [2022-01-10 14:12:33,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:12:33,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:12:33,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:12:33,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:12:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:12:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:12:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:12:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:12:33,403 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:12:33,404 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:12:34,968 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:12:35,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:12:35,004 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 14:12:35,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:35 BoogieIcfgContainer [2022-01-10 14:12:35,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:12:35,008 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:12:35,009 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:12:35,010 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:12:35,012 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:35" (1/1) ... [2022-01-10 14:12:35,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:12:35 BasicIcfg [2022-01-10 14:12:35,328 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:12:35,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:12:35,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:12:35,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:12:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:12:32" (1/4) ... [2022-01-10 14:12:35,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c923f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:12:35, skipping insertion in model container [2022-01-10 14:12:35,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:12:32" (2/4) ... [2022-01-10 14:12:35,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c923f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:12:35, skipping insertion in model container [2022-01-10 14:12:35,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:12:35" (3/4) ... [2022-01-10 14:12:35,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c923f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:12:35, skipping insertion in model container [2022-01-10 14:12:35,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:12:35" (4/4) ... [2022-01-10 14:12:35,333 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-1.cTransformedIcfg [2022-01-10 14:12:35,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:12:35,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 14:12:35,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:12:35,419 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:12:35,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 14:12:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 1103 states, 1099 states have (on average 1.5204731574158326) internal successors, (1671), 1102 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:35,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:35,449 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] [2022-01-10 14:12:35,450 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1121874356, now seen corresponding path program 1 times [2022-01-10 14:12:35,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:35,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248849597] [2022-01-10 14:12:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:35,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:35,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248849597] [2022-01-10 14:12:35,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248849597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:35,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:35,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:35,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540367752] [2022-01-10 14:12:35,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:35,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:35,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:35,740 INFO L87 Difference]: Start difference. First operand has 1103 states, 1099 states have (on average 1.5204731574158326) internal successors, (1671), 1102 states have internal predecessors, (1671), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:35,987 INFO L93 Difference]: Finished difference Result 2175 states and 3284 transitions. [2022-01-10 14:12:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:35,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-01-10 14:12:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:36,026 INFO L225 Difference]: With dead ends: 2175 [2022-01-10 14:12:36,026 INFO L226 Difference]: Without dead ends: 1187 [2022-01-10 14:12:36,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,048 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 124 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:36,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 3232 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-10 14:12:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1183. [2022-01-10 14:12:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1180 states have (on average 1.4822033898305085) internal successors, (1749), 1182 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1749 transitions. [2022-01-10 14:12:36,130 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1749 transitions. Word has length 44 [2022-01-10 14:12:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:36,130 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1749 transitions. [2022-01-10 14:12:36,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1749 transitions. [2022-01-10 14:12:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:12:36,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:36,132 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] [2022-01-10 14:12:36,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:12:36,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -352308881, now seen corresponding path program 1 times [2022-01-10 14:12:36,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214731235] [2022-01-10 14:12:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:36,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:36,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214731235] [2022-01-10 14:12:36,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214731235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:36,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:36,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:36,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7653475] [2022-01-10 14:12:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:36,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:36,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:36,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,297 INFO L87 Difference]: Start difference. First operand 1183 states and 1749 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:36,371 INFO L93 Difference]: Finished difference Result 1469 states and 2147 transitions. [2022-01-10 14:12:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-01-10 14:12:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:36,393 INFO L225 Difference]: With dead ends: 1469 [2022-01-10 14:12:36,393 INFO L226 Difference]: Without dead ends: 1339 [2022-01-10 14:12:36,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,395 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 1587 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:36,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 1742 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-01-10 14:12:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1335. [2022-01-10 14:12:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1332 states have (on average 1.4677177177177176) internal successors, (1955), 1334 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1955 transitions. [2022-01-10 14:12:36,449 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1955 transitions. Word has length 44 [2022-01-10 14:12:36,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:36,450 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1955 transitions. [2022-01-10 14:12:36,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1955 transitions. [2022-01-10 14:12:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:12:36,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:36,462 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] [2022-01-10 14:12:36,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:12:36,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:36,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1105312476, now seen corresponding path program 1 times [2022-01-10 14:12:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:36,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624182877] [2022-01-10 14:12:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:36,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:36,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:36,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624182877] [2022-01-10 14:12:36,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624182877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:36,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:36,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:36,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963026107] [2022-01-10 14:12:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:36,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:36,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,546 INFO L87 Difference]: Start difference. First operand 1335 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:36,605 INFO L93 Difference]: Finished difference Result 1883 states and 2715 transitions. [2022-01-10 14:12:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:36,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2022-01-10 14:12:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:36,611 INFO L225 Difference]: With dead ends: 1883 [2022-01-10 14:12:36,611 INFO L226 Difference]: Without dead ends: 1548 [2022-01-10 14:12:36,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,616 INFO L933 BasicCegarLoop]: 1619 mSDtfsCounter, 94 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:36,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 3182 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-01-10 14:12:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1534. [2022-01-10 14:12:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1531 states have (on average 1.4519921619856304) internal successors, (2223), 1533 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2223 transitions. [2022-01-10 14:12:36,693 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2223 transitions. Word has length 45 [2022-01-10 14:12:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:36,694 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2223 transitions. [2022-01-10 14:12:36,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2223 transitions. [2022-01-10 14:12:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:12:36,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:36,695 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] [2022-01-10 14:12:36,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:12:36,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:36,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:36,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1075730013, now seen corresponding path program 1 times [2022-01-10 14:12:36,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:36,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558481207] [2022-01-10 14:12:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:36,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:36,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:36,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558481207] [2022-01-10 14:12:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558481207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:36,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:36,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:36,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389299206] [2022-01-10 14:12:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:36,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:36,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,752 INFO L87 Difference]: Start difference. First operand 1534 states and 2223 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:36,803 INFO L93 Difference]: Finished difference Result 2422 states and 3435 transitions. [2022-01-10 14:12:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:36,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2022-01-10 14:12:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:36,810 INFO L225 Difference]: With dead ends: 2422 [2022-01-10 14:12:36,810 INFO L226 Difference]: Without dead ends: 1946 [2022-01-10 14:12:36,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,816 INFO L933 BasicCegarLoop]: 1619 mSDtfsCounter, 1575 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:36,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 1708 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-01-10 14:12:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1914. [2022-01-10 14:12:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1911 states have (on average 1.424908424908425) internal successors, (2723), 1913 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2723 transitions. [2022-01-10 14:12:36,889 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2723 transitions. Word has length 45 [2022-01-10 14:12:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:36,890 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2723 transitions. [2022-01-10 14:12:36,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2723 transitions. [2022-01-10 14:12:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 14:12:36,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:36,891 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] [2022-01-10 14:12:36,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:12:36,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash 449641631, now seen corresponding path program 1 times [2022-01-10 14:12:36,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:36,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000649995] [2022-01-10 14:12:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:36,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:36,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000649995] [2022-01-10 14:12:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000649995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:36,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:36,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727759278] [2022-01-10 14:12:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:36,954 INFO L87 Difference]: Start difference. First operand 1914 states and 2723 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:37,021 INFO L93 Difference]: Finished difference Result 3117 states and 4336 transitions. [2022-01-10 14:12:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:37,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 14:12:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:37,029 INFO L225 Difference]: With dead ends: 3117 [2022-01-10 14:12:37,030 INFO L226 Difference]: Without dead ends: 2233 [2022-01-10 14:12:37,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:37,032 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 1572 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:37,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 1712 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-01-10 14:12:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2211. [2022-01-10 14:12:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2208 states have (on average 1.4076086956521738) internal successors, (3108), 2210 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3108 transitions. [2022-01-10 14:12:37,094 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3108 transitions. Word has length 51 [2022-01-10 14:12:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:37,097 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 3108 transitions. [2022-01-10 14:12:37,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3108 transitions. [2022-01-10 14:12:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:37,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:37,100 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:37,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:12:37,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1325444300, now seen corresponding path program 1 times [2022-01-10 14:12:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:37,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953623175] [2022-01-10 14:12:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:37,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:37,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953623175] [2022-01-10 14:12:37,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953623175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:37,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:37,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:37,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913890875] [2022-01-10 14:12:37,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:37,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:37,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:37,193 INFO L87 Difference]: Start difference. First operand 2211 states and 3108 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:37,331 INFO L93 Difference]: Finished difference Result 3837 states and 5312 transitions. [2022-01-10 14:12:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 52 [2022-01-10 14:12:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:37,340 INFO L225 Difference]: With dead ends: 3837 [2022-01-10 14:12:37,341 INFO L226 Difference]: Without dead ends: 2886 [2022-01-10 14:12:37,344 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 [2022-01-10 14:12:37,345 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 395 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:37,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 6557 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-01-10 14:12:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2235. [2022-01-10 14:12:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2232 states have (on average 1.3951612903225807) internal successors, (3114), 2234 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3114 transitions. [2022-01-10 14:12:37,444 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3114 transitions. Word has length 52 [2022-01-10 14:12:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:37,444 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 3114 transitions. [2022-01-10 14:12:37,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3114 transitions. [2022-01-10 14:12:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:37,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:37,445 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:37,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:12:37,445 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash 624855955, now seen corresponding path program 1 times [2022-01-10 14:12:37,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:37,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040349490] [2022-01-10 14:12:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:37,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:37,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040349490] [2022-01-10 14:12:37,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040349490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:37,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:37,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69119257] [2022-01-10 14:12:37,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:37,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:37,483 INFO L87 Difference]: Start difference. First operand 2235 states and 3114 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:37,626 INFO L93 Difference]: Finished difference Result 3990 states and 5463 transitions. [2022-01-10 14:12:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 52 [2022-01-10 14:12:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:37,634 INFO L225 Difference]: With dead ends: 3990 [2022-01-10 14:12:37,634 INFO L226 Difference]: Without dead ends: 2825 [2022-01-10 14:12:37,635 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 [2022-01-10 14:12:37,636 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 354 mSDsluCounter, 4962 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 6573 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:37,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 6573 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-01-10 14:12:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2253. [2022-01-10 14:12:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2250 states have (on average 1.3831111111111112) internal successors, (3112), 2252 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3112 transitions. [2022-01-10 14:12:37,733 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3112 transitions. Word has length 52 [2022-01-10 14:12:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:37,733 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 3112 transitions. [2022-01-10 14:12:37,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3112 transitions. [2022-01-10 14:12:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 14:12:37,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:37,734 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:37,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:12:37,734 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash 636172082, now seen corresponding path program 1 times [2022-01-10 14:12:37,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:37,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322692732] [2022-01-10 14:12:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:37,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:37,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:37,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322692732] [2022-01-10 14:12:37,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322692732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:37,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:37,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:12:37,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661437446] [2022-01-10 14:12:37,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:37,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:12:37,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:37,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:12:37,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:12:37,807 INFO L87 Difference]: Start difference. First operand 2253 states and 3112 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:37,927 INFO L93 Difference]: Finished difference Result 2485 states and 3412 transitions. [2022-01-10 14:12:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:12:37,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-01-10 14:12:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:37,934 INFO L225 Difference]: With dead ends: 2485 [2022-01-10 14:12:37,934 INFO L226 Difference]: Without dead ends: 2483 [2022-01-10 14:12:37,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:37,935 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 3283 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:37,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3283 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2022-01-10 14:12:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2251. [2022-01-10 14:12:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2249 states have (on average 1.3797243219208537) internal successors, (3103), 2250 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3103 transitions. [2022-01-10 14:12:38,057 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3103 transitions. Word has length 52 [2022-01-10 14:12:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:38,058 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3103 transitions. [2022-01-10 14:12:38,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:38,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3103 transitions. [2022-01-10 14:12:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 14:12:38,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:38,059 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:38,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:12:38,059 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1753498594, now seen corresponding path program 1 times [2022-01-10 14:12:38,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:38,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540459290] [2022-01-10 14:12:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:38,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:38,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540459290] [2022-01-10 14:12:38,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540459290] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:12:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692396669] [2022-01-10 14:12:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:38,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:12:38,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:12:38,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:12:38,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:12:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:38,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:12:38,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:12:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:38,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:12:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:38,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692396669] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:12:38,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:12:38,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 14:12:38,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624322738] [2022-01-10 14:12:38,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:12:38,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 14:12:38,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:38,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 14:12:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:12:38,832 INFO L87 Difference]: Start difference. First operand 2251 states and 3103 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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) [2022-01-10 14:12:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:39,451 INFO L93 Difference]: Finished difference Result 4608 states and 6203 transitions. [2022-01-10 14:12:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:12:39,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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 53 [2022-01-10 14:12:39,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:39,464 INFO L225 Difference]: With dead ends: 4608 [2022-01-10 14:12:39,464 INFO L226 Difference]: Without dead ends: 4606 [2022-01-10 14:12:39,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:12:39,465 INFO L933 BasicCegarLoop]: 1771 mSDtfsCounter, 3806 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:39,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3806 Valid, 5590 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-01-10 14:12:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3226. [2022-01-10 14:12:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3224 states have (on average 1.3598014888337469) internal successors, (4384), 3225 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4384 transitions. [2022-01-10 14:12:39,697 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4384 transitions. Word has length 53 [2022-01-10 14:12:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:39,697 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4384 transitions. [2022-01-10 14:12:39,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 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) [2022-01-10 14:12:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4384 transitions. [2022-01-10 14:12:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 14:12:39,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:39,698 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-10 14:12:39,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:12:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:12:39,913 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash 892927876, now seen corresponding path program 2 times [2022-01-10 14:12:39,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:39,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252280614] [2022-01-10 14:12:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:39,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:39,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:39,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252280614] [2022-01-10 14:12:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252280614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:39,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:39,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:39,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412908153] [2022-01-10 14:12:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:39,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:39,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:39,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:39,969 INFO L87 Difference]: Start difference. First operand 3226 states and 4384 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:40,246 INFO L93 Difference]: Finished difference Result 4320 states and 5829 transitions. [2022-01-10 14:12:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-01-10 14:12:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:40,253 INFO L225 Difference]: With dead ends: 4320 [2022-01-10 14:12:40,253 INFO L226 Difference]: Without dead ends: 2580 [2022-01-10 14:12:40,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:40,256 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 1566 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:40,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 1799 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-01-10 14:12:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2564. [2022-01-10 14:12:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2562 states have (on average 1.3583138173302107) internal successors, (3480), 2563 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3480 transitions. [2022-01-10 14:12:40,394 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3480 transitions. Word has length 56 [2022-01-10 14:12:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:40,394 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 3480 transitions. [2022-01-10 14:12:40,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3480 transitions. [2022-01-10 14:12:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 14:12:40,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:40,397 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:40,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:12:40,397 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1306329824, now seen corresponding path program 1 times [2022-01-10 14:12:40,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682162216] [2022-01-10 14:12:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:40,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:40,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:40,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682162216] [2022-01-10 14:12:40,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682162216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:40,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:40,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:40,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122866275] [2022-01-10 14:12:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:40,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:40,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:40,442 INFO L87 Difference]: Start difference. First operand 2564 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:40,655 INFO L93 Difference]: Finished difference Result 5051 states and 6628 transitions. [2022-01-10 14:12:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:40,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-10 14:12:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:40,675 INFO L225 Difference]: With dead ends: 5051 [2022-01-10 14:12:40,676 INFO L226 Difference]: Without dead ends: 2949 [2022-01-10 14:12:40,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:40,679 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 89 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:40,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 3308 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-01-10 14:12:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-01-10 14:12:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2947 states have (on average 1.336613505259586) internal successors, (3939), 2948 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3939 transitions. [2022-01-10 14:12:40,874 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3939 transitions. Word has length 60 [2022-01-10 14:12:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:40,874 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 3939 transitions. [2022-01-10 14:12:40,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3939 transitions. [2022-01-10 14:12:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 14:12:40,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:40,876 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:40,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:12:40,876 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:40,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 888236698, now seen corresponding path program 1 times [2022-01-10 14:12:40,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:40,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682718870] [2022-01-10 14:12:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:40,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:40,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682718870] [2022-01-10 14:12:40,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682718870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:40,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:40,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:40,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276703035] [2022-01-10 14:12:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:40,904 INFO L87 Difference]: Start difference. First operand 2949 states and 3939 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:41,080 INFO L93 Difference]: Finished difference Result 4812 states and 6291 transitions. [2022-01-10 14:12:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 68 [2022-01-10 14:12:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:41,085 INFO L225 Difference]: With dead ends: 4812 [2022-01-10 14:12:41,085 INFO L226 Difference]: Without dead ends: 2949 [2022-01-10 14:12:41,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,088 INFO L933 BasicCegarLoop]: 1615 mSDtfsCounter, 1558 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:41,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 1699 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-01-10 14:12:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-01-10 14:12:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2947 states have (on average 1.323040380047506) internal successors, (3899), 2948 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3899 transitions. [2022-01-10 14:12:41,271 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3899 transitions. Word has length 68 [2022-01-10 14:12:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:41,272 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 3899 transitions. [2022-01-10 14:12:41,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3899 transitions. [2022-01-10 14:12:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 14:12:41,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:41,273 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:41,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:12:41,274 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2064860225, now seen corresponding path program 1 times [2022-01-10 14:12:41,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447325647] [2022-01-10 14:12:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:41,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:12:41,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447325647] [2022-01-10 14:12:41,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447325647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:41,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:41,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:41,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884234605] [2022-01-10 14:12:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:41,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:41,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,301 INFO L87 Difference]: Start difference. First operand 2949 states and 3899 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:41,415 INFO L93 Difference]: Finished difference Result 4248 states and 5533 transitions. [2022-01-10 14:12:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2022-01-10 14:12:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:41,419 INFO L225 Difference]: With dead ends: 4248 [2022-01-10 14:12:41,419 INFO L226 Difference]: Without dead ends: 2623 [2022-01-10 14:12:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,422 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 99 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:41,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 3295 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-01-10 14:12:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2621. [2022-01-10 14:12:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 2619 states have (on average 1.3230240549828178) internal successors, (3465), 2620 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3465 transitions. [2022-01-10 14:12:41,554 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3465 transitions. Word has length 69 [2022-01-10 14:12:41,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:41,554 INFO L470 AbstractCegarLoop]: Abstraction has 2621 states and 3465 transitions. [2022-01-10 14:12:41,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3465 transitions. [2022-01-10 14:12:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 14:12:41,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:41,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:41,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 14:12:41,557 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash -971713807, now seen corresponding path program 1 times [2022-01-10 14:12:41,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:41,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937729135] [2022-01-10 14:12:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:41,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 14:12:41,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937729135] [2022-01-10 14:12:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937729135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:41,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:41,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:41,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869454766] [2022-01-10 14:12:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:41,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:41,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,585 INFO L87 Difference]: Start difference. First operand 2621 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:41,749 INFO L93 Difference]: Finished difference Result 4265 states and 5569 transitions. [2022-01-10 14:12:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:41,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 100 [2022-01-10 14:12:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:41,753 INFO L225 Difference]: With dead ends: 4265 [2022-01-10 14:12:41,753 INFO L226 Difference]: Without dead ends: 2897 [2022-01-10 14:12:41,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,755 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1589 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:41,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1697 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-01-10 14:12:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2858. [2022-01-10 14:12:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2856 states have (on average 1.3315826330532212) internal successors, (3803), 2857 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 3803 transitions. [2022-01-10 14:12:41,875 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 3803 transitions. Word has length 100 [2022-01-10 14:12:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:41,876 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 3803 transitions. [2022-01-10 14:12:41,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 3803 transitions. [2022-01-10 14:12:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 14:12:41,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:41,877 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:41,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 14:12:41,877 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash -767884444, now seen corresponding path program 1 times [2022-01-10 14:12:41,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:41,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228200992] [2022-01-10 14:12:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:41,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 14:12:41,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:41,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228200992] [2022-01-10 14:12:41,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228200992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:41,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:41,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:41,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303380090] [2022-01-10 14:12:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:41,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:41,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:41,929 INFO L87 Difference]: Start difference. First operand 2858 states and 3803 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:42,117 INFO L93 Difference]: Finished difference Result 5035 states and 6604 transitions. [2022-01-10 14:12:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:42,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 110 [2022-01-10 14:12:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:42,126 INFO L225 Difference]: With dead ends: 5035 [2022-01-10 14:12:42,127 INFO L226 Difference]: Without dead ends: 3434 [2022-01-10 14:12:42,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:42,146 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 1562 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:42,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 1619 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-01-10 14:12:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3434. [2022-01-10 14:12:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3432 states have (on average 1.3143939393939394) internal successors, (4511), 3433 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4511 transitions. [2022-01-10 14:12:42,436 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4511 transitions. Word has length 110 [2022-01-10 14:12:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:42,436 INFO L470 AbstractCegarLoop]: Abstraction has 3434 states and 4511 transitions. [2022-01-10 14:12:42,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4511 transitions. [2022-01-10 14:12:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 14:12:42,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:42,438 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:42,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 14:12:42,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash -527344315, now seen corresponding path program 1 times [2022-01-10 14:12:42,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132525784] [2022-01-10 14:12:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:42,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 14:12:42,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132525784] [2022-01-10 14:12:42,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132525784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:42,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:42,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:42,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356391792] [2022-01-10 14:12:42,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:42,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:42,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:42,469 INFO L87 Difference]: Start difference. First operand 3434 states and 4511 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:42,578 INFO L93 Difference]: Finished difference Result 4197 states and 5456 transitions. [2022-01-10 14:12:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:42,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 110 [2022-01-10 14:12:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:42,582 INFO L225 Difference]: With dead ends: 4197 [2022-01-10 14:12:42,582 INFO L226 Difference]: Without dead ends: 2020 [2022-01-10 14:12:42,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:42,585 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 69 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:42,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 3084 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-01-10 14:12:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2022-01-10 14:12:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2018 states have (on average 1.3389494549058474) internal successors, (2702), 2019 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2702 transitions. [2022-01-10 14:12:42,692 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2702 transitions. Word has length 110 [2022-01-10 14:12:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:42,692 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 2702 transitions. [2022-01-10 14:12:42,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2702 transitions. [2022-01-10 14:12:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 14:12:42,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:42,694 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:42,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 14:12:42,694 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:42,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 864202855, now seen corresponding path program 1 times [2022-01-10 14:12:42,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733919952] [2022-01-10 14:12:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:42,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 14:12:42,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733919952] [2022-01-10 14:12:42,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733919952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:42,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:42,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:42,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200918213] [2022-01-10 14:12:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:42,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:42,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:42,901 INFO L87 Difference]: Start difference. First operand 2020 states and 2702 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) [2022-01-10 14:12:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:43,046 INFO L93 Difference]: Finished difference Result 2792 states and 3646 transitions. [2022-01-10 14:12:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:43,046 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 113 [2022-01-10 14:12:43,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:43,049 INFO L225 Difference]: With dead ends: 2792 [2022-01-10 14:12:43,049 INFO L226 Difference]: Without dead ends: 2029 [2022-01-10 14:12:43,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,051 INFO L933 BasicCegarLoop]: 1599 mSDtfsCounter, 60 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:43,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 3088 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-01-10 14:12:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2029. [2022-01-10 14:12:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2027 states have (on average 1.3305377405032066) internal successors, (2697), 2028 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2697 transitions. [2022-01-10 14:12:43,147 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2697 transitions. Word has length 113 [2022-01-10 14:12:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:43,147 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2697 transitions. [2022-01-10 14:12:43,147 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) [2022-01-10 14:12:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2697 transitions. [2022-01-10 14:12:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 14:12:43,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:43,149 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 14:12:43,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 14:12:43,150 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash 415506216, now seen corresponding path program 1 times [2022-01-10 14:12:43,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:43,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200752703] [2022-01-10 14:12:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:43,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 14:12:43,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200752703] [2022-01-10 14:12:43,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200752703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:43,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:43,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:43,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248878903] [2022-01-10 14:12:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:43,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:43,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,204 INFO L87 Difference]: Start difference. First operand 2029 states and 2697 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) [2022-01-10 14:12:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:43,302 INFO L93 Difference]: Finished difference Result 2424 states and 3160 transitions. [2022-01-10 14:12:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:43,303 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 113 [2022-01-10 14:12:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:43,304 INFO L225 Difference]: With dead ends: 2424 [2022-01-10 14:12:43,304 INFO L226 Difference]: Without dead ends: 996 [2022-01-10 14:12:43,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,306 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 1547 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:43,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 1614 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:43,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-01-10 14:12:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2022-01-10 14:12:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.4924623115577889) internal successors, (1485), 995 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1485 transitions. [2022-01-10 14:12:43,336 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1485 transitions. Word has length 113 [2022-01-10 14:12:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:43,336 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1485 transitions. [2022-01-10 14:12:43,336 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) [2022-01-10 14:12:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1485 transitions. [2022-01-10 14:12:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:43,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:43,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:43,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 14:12:43,337 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1514419045, now seen corresponding path program 1 times [2022-01-10 14:12:43,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:43,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667172805] [2022-01-10 14:12:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:43,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:43,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:43,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667172805] [2022-01-10 14:12:43,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667172805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:43,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:43,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:43,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346720900] [2022-01-10 14:12:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:43,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:43,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:43,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,367 INFO L87 Difference]: Start difference. First operand 996 states and 1485 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:43,402 INFO L93 Difference]: Finished difference Result 1981 states and 2953 transitions. [2022-01-10 14:12:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:43,404 INFO L225 Difference]: With dead ends: 1981 [2022-01-10 14:12:43,404 INFO L226 Difference]: Without dead ends: 996 [2022-01-10 14:12:43,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,405 INFO L933 BasicCegarLoop]: 1483 mSDtfsCounter, 1474 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1484 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 [2022-01-10 14:12:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1484 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-01-10 14:12:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2022-01-10 14:12:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.491457286432161) internal successors, (1484), 995 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1484 transitions. [2022-01-10 14:12:43,466 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1484 transitions. Word has length 121 [2022-01-10 14:12:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:43,467 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1484 transitions. [2022-01-10 14:12:43,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1484 transitions. [2022-01-10 14:12:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:43,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:43,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:43,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 14:12:43,468 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash -690737574, now seen corresponding path program 1 times [2022-01-10 14:12:43,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:43,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846573868] [2022-01-10 14:12:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:43,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:43,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:43,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846573868] [2022-01-10 14:12:43,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846573868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:43,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:43,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:43,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475331286] [2022-01-10 14:12:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:43,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:43,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,528 INFO L87 Difference]: Start difference. First operand 996 states and 1484 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:43,721 INFO L93 Difference]: Finished difference Result 2791 states and 4147 transitions. [2022-01-10 14:12:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:43,725 INFO L225 Difference]: With dead ends: 2791 [2022-01-10 14:12:43,725 INFO L226 Difference]: Without dead ends: 1811 [2022-01-10 14:12:43,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,727 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 1371 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:43,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 2768 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2022-01-10 14:12:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1809. [2022-01-10 14:12:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4839601769911503) internal successors, (2683), 1808 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2683 transitions. [2022-01-10 14:12:43,813 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2683 transitions. Word has length 121 [2022-01-10 14:12:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:43,813 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2683 transitions. [2022-01-10 14:12:43,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2683 transitions. [2022-01-10 14:12:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:43,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:43,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 14:12:43,814 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1038571654, now seen corresponding path program 1 times [2022-01-10 14:12:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703531940] [2022-01-10 14:12:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:43,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:43,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:43,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703531940] [2022-01-10 14:12:43,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703531940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:43,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:43,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:43,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697129173] [2022-01-10 14:12:43,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,883 INFO L87 Difference]: Start difference. First operand 1809 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:43,992 INFO L93 Difference]: Finished difference Result 3601 states and 5340 transitions. [2022-01-10 14:12:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:43,996 INFO L225 Difference]: With dead ends: 3601 [2022-01-10 14:12:43,996 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:43,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:43,998 INFO L933 BasicCegarLoop]: 1472 mSDtfsCounter, 1461 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1472 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 [2022-01-10 14:12:43,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 1472 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4795353982300885) internal successors, (2675), 1808 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2675 transitions. [2022-01-10 14:12:44,060 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2675 transitions. Word has length 121 [2022-01-10 14:12:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:44,060 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2675 transitions. [2022-01-10 14:12:44,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2675 transitions. [2022-01-10 14:12:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:44,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:44,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:44,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 14:12:44,061 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1305512538, now seen corresponding path program 1 times [2022-01-10 14:12:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251995938] [2022-01-10 14:12:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:44,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:44,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:44,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251995938] [2022-01-10 14:12:44,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251995938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:44,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:44,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:44,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137051533] [2022-01-10 14:12:44,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:44,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:44,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,094 INFO L87 Difference]: Start difference. First operand 1809 states and 2675 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:44,215 INFO L93 Difference]: Finished difference Result 3600 states and 5323 transitions. [2022-01-10 14:12:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:44,219 INFO L225 Difference]: With dead ends: 3600 [2022-01-10 14:12:44,219 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:44,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,222 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 1455 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1467 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 [2022-01-10 14:12:44,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 1467 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4751106194690264) internal successors, (2667), 1808 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2667 transitions. [2022-01-10 14:12:44,324 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2667 transitions. Word has length 121 [2022-01-10 14:12:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:44,324 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2667 transitions. [2022-01-10 14:12:44,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2667 transitions. [2022-01-10 14:12:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:44,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:44,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:44,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 14:12:44,325 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1944007814, now seen corresponding path program 1 times [2022-01-10 14:12:44,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:44,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588439176] [2022-01-10 14:12:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:44,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:44,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:44,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588439176] [2022-01-10 14:12:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588439176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:44,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:44,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:44,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587014082] [2022-01-10 14:12:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:44,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:44,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,362 INFO L87 Difference]: Start difference. First operand 1809 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:44,450 INFO L93 Difference]: Finished difference Result 3599 states and 5306 transitions. [2022-01-10 14:12:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:44,454 INFO L225 Difference]: With dead ends: 3599 [2022-01-10 14:12:44,454 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:44,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,456 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 1449 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1462 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 [2022-01-10 14:12:44,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 1462 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4706858407079646) internal successors, (2659), 1808 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2659 transitions. [2022-01-10 14:12:44,541 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2659 transitions. Word has length 121 [2022-01-10 14:12:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:44,541 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2659 transitions. [2022-01-10 14:12:44,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2659 transitions. [2022-01-10 14:12:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:44,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:44,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:44,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 14:12:44,543 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash -801905062, now seen corresponding path program 1 times [2022-01-10 14:12:44,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192711439] [2022-01-10 14:12:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:44,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:44,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:44,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192711439] [2022-01-10 14:12:44,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192711439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:44,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:44,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:44,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397357608] [2022-01-10 14:12:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:44,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:44,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,580 INFO L87 Difference]: Start difference. First operand 1809 states and 2659 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:44,675 INFO L93 Difference]: Finished difference Result 3598 states and 5289 transitions. [2022-01-10 14:12:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:44,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:44,679 INFO L225 Difference]: With dead ends: 3598 [2022-01-10 14:12:44,679 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:44,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,682 INFO L933 BasicCegarLoop]: 1457 mSDtfsCounter, 1443 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1457 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 [2022-01-10 14:12:44,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1457 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4662610619469028) internal successors, (2651), 1808 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2651 transitions. [2022-01-10 14:12:44,775 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2651 transitions. Word has length 121 [2022-01-10 14:12:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2651 transitions. [2022-01-10 14:12:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2651 transitions. [2022-01-10 14:12:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:44,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:44,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:44,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 14:12:44,776 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1042157702, now seen corresponding path program 1 times [2022-01-10 14:12:44,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717790781] [2022-01-10 14:12:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:44,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:44,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:44,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717790781] [2022-01-10 14:12:44,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717790781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:44,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:44,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:44,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76106946] [2022-01-10 14:12:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:44,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:44,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,820 INFO L87 Difference]: Start difference. First operand 1809 states and 2651 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:44,918 INFO L93 Difference]: Finished difference Result 3597 states and 5272 transitions. [2022-01-10 14:12:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:44,922 INFO L225 Difference]: With dead ends: 3597 [2022-01-10 14:12:44,922 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:44,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:44,926 INFO L933 BasicCegarLoop]: 1452 mSDtfsCounter, 1437 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1452 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 [2022-01-10 14:12:44,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 1452 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4618362831858407) internal successors, (2643), 1808 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2643 transitions. [2022-01-10 14:12:45,037 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2643 transitions. Word has length 121 [2022-01-10 14:12:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:45,037 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2643 transitions. [2022-01-10 14:12:45,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2643 transitions. [2022-01-10 14:12:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:45,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:45,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:45,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 14:12:45,039 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash 197018202, now seen corresponding path program 1 times [2022-01-10 14:12:45,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:45,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816526473] [2022-01-10 14:12:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:45,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:45,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816526473] [2022-01-10 14:12:45,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816526473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:45,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:45,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:45,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129094320] [2022-01-10 14:12:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:45,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:45,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,075 INFO L87 Difference]: Start difference. First operand 1809 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:45,179 INFO L93 Difference]: Finished difference Result 3596 states and 5255 transitions. [2022-01-10 14:12:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:45,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:45,183 INFO L225 Difference]: With dead ends: 3596 [2022-01-10 14:12:45,183 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:45,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,186 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 1431 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1447 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 [2022-01-10 14:12:45,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1447 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4574115044247788) internal successors, (2635), 1808 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2635 transitions. [2022-01-10 14:12:45,307 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2635 transitions. Word has length 121 [2022-01-10 14:12:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:45,307 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2635 transitions. [2022-01-10 14:12:45,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2635 transitions. [2022-01-10 14:12:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:45,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:45,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:45,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 14:12:45,308 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash -40103046, now seen corresponding path program 1 times [2022-01-10 14:12:45,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:45,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922564191] [2022-01-10 14:12:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:45,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:45,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:45,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922564191] [2022-01-10 14:12:45,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922564191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:45,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:45,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:45,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079443241] [2022-01-10 14:12:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:45,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:45,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,360 INFO L87 Difference]: Start difference. First operand 1809 states and 2635 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:45,507 INFO L93 Difference]: Finished difference Result 3595 states and 5238 transitions. [2022-01-10 14:12:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:45,534 INFO L225 Difference]: With dead ends: 3595 [2022-01-10 14:12:45,534 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:45,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,551 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 1425 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1442 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 [2022-01-10 14:12:45,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 1442 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4529867256637168) internal successors, (2627), 1808 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2627 transitions. [2022-01-10 14:12:45,662 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2627 transitions. Word has length 121 [2022-01-10 14:12:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:45,662 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2627 transitions. [2022-01-10 14:12:45,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2627 transitions. [2022-01-10 14:12:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:45,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:45,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:45,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 14:12:45,676 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 506437210, now seen corresponding path program 1 times [2022-01-10 14:12:45,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:45,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747122025] [2022-01-10 14:12:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:45,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:45,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747122025] [2022-01-10 14:12:45,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747122025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:45,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:45,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:45,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863300385] [2022-01-10 14:12:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:45,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:45,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,721 INFO L87 Difference]: Start difference. First operand 1809 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:45,801 INFO L93 Difference]: Finished difference Result 3594 states and 5221 transitions. [2022-01-10 14:12:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:45,804 INFO L225 Difference]: With dead ends: 3594 [2022-01-10 14:12:45,804 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:45,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,806 INFO L933 BasicCegarLoop]: 1437 mSDtfsCounter, 1419 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1437 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 [2022-01-10 14:12:45,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 1437 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.448561946902655) internal successors, (2619), 1808 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2619 transitions. [2022-01-10 14:12:45,880 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2619 transitions. Word has length 121 [2022-01-10 14:12:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:45,880 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2619 transitions. [2022-01-10 14:12:45,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2619 transitions. [2022-01-10 14:12:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:45,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:45,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:45,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 14:12:45,881 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1770993530, now seen corresponding path program 1 times [2022-01-10 14:12:45,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284954942] [2022-01-10 14:12:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:45,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:45,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:45,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284954942] [2022-01-10 14:12:45,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284954942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:45,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:45,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:45,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445648739] [2022-01-10 14:12:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:45,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:45,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:45,913 INFO L87 Difference]: Start difference. First operand 1809 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:46,012 INFO L93 Difference]: Finished difference Result 3593 states and 5204 transitions. [2022-01-10 14:12:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:46,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:46,015 INFO L225 Difference]: With dead ends: 3593 [2022-01-10 14:12:46,015 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:46,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,021 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 1310 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:46,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 1498 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4330752212389382) internal successors, (2591), 1808 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2591 transitions. [2022-01-10 14:12:46,094 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2591 transitions. Word has length 121 [2022-01-10 14:12:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:46,094 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2591 transitions. [2022-01-10 14:12:46,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2591 transitions. [2022-01-10 14:12:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:46,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:46,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:46,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 14:12:46,096 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1894674215, now seen corresponding path program 1 times [2022-01-10 14:12:46,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:46,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137644627] [2022-01-10 14:12:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:46,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:46,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:46,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137644627] [2022-01-10 14:12:46,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137644627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:46,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:46,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:46,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788512419] [2022-01-10 14:12:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:46,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:46,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,133 INFO L87 Difference]: Start difference. First operand 1809 states and 2591 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:46,310 INFO L93 Difference]: Finished difference Result 3592 states and 5147 transitions. [2022-01-10 14:12:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:46,331 INFO L225 Difference]: With dead ends: 3592 [2022-01-10 14:12:46,331 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:46,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,335 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 1294 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:46,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 1481 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4175884955752212) internal successors, (2563), 1808 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2563 transitions. [2022-01-10 14:12:46,466 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2563 transitions. Word has length 121 [2022-01-10 14:12:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:46,466 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2563 transitions. [2022-01-10 14:12:46,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2563 transitions. [2022-01-10 14:12:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:46,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:46,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:46,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 14:12:46,468 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1445270456, now seen corresponding path program 1 times [2022-01-10 14:12:46,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:46,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062606542] [2022-01-10 14:12:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:46,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:46,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:46,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062606542] [2022-01-10 14:12:46,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062606542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:46,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:46,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:46,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672123413] [2022-01-10 14:12:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:46,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:46,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,499 INFO L87 Difference]: Start difference. First operand 1809 states and 2563 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:46,633 INFO L93 Difference]: Finished difference Result 3591 states and 5090 transitions. [2022-01-10 14:12:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:46,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:46,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:46,636 INFO L225 Difference]: With dead ends: 3591 [2022-01-10 14:12:46,636 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:46,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,639 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 1278 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:46,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1464 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.4021017699115044) internal successors, (2535), 1808 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2535 transitions. [2022-01-10 14:12:46,717 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2535 transitions. Word has length 121 [2022-01-10 14:12:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:46,717 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2535 transitions. [2022-01-10 14:12:46,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2535 transitions. [2022-01-10 14:12:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:46,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:46,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:46,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 14:12:46,719 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1837181847, now seen corresponding path program 1 times [2022-01-10 14:12:46,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:46,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988336215] [2022-01-10 14:12:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:46,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:46,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988336215] [2022-01-10 14:12:46,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988336215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:46,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:46,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:46,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886139039] [2022-01-10 14:12:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:46,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:46,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,747 INFO L87 Difference]: Start difference. First operand 1809 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:46,865 INFO L93 Difference]: Finished difference Result 3590 states and 5033 transitions. [2022-01-10 14:12:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:46,869 INFO L225 Difference]: With dead ends: 3590 [2022-01-10 14:12:46,869 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:46,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:46,873 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 1262 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:46,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 1447 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3866150442477876) internal successors, (2507), 1808 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2507 transitions. [2022-01-10 14:12:46,984 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2507 transitions. Word has length 121 [2022-01-10 14:12:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:46,985 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2507 transitions. [2022-01-10 14:12:46,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2507 transitions. [2022-01-10 14:12:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:46,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:46,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:46,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 14:12:46,986 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:46,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1239045303, now seen corresponding path program 1 times [2022-01-10 14:12:46,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:46,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433320636] [2022-01-10 14:12:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:46,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:47,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:47,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433320636] [2022-01-10 14:12:47,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433320636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:47,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:47,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:47,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500267951] [2022-01-10 14:12:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:47,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:47,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:47,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,018 INFO L87 Difference]: Start difference. First operand 1809 states and 2507 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:47,117 INFO L93 Difference]: Finished difference Result 3589 states and 4976 transitions. [2022-01-10 14:12:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:47,121 INFO L225 Difference]: With dead ends: 3589 [2022-01-10 14:12:47,121 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:47,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,124 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 1246 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:47,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 1430 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3711283185840708) internal successors, (2479), 1808 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2479 transitions. [2022-01-10 14:12:47,222 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2479 transitions. Word has length 121 [2022-01-10 14:12:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:47,222 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2479 transitions. [2022-01-10 14:12:47,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2479 transitions. [2022-01-10 14:12:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:47,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:47,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:47,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 14:12:47,223 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 859040534, now seen corresponding path program 1 times [2022-01-10 14:12:47,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999749094] [2022-01-10 14:12:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:47,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:47,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999749094] [2022-01-10 14:12:47,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999749094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:47,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:47,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:47,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953105686] [2022-01-10 14:12:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:47,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:47,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,257 INFO L87 Difference]: Start difference. First operand 1809 states and 2479 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:47,371 INFO L93 Difference]: Finished difference Result 3588 states and 4919 transitions. [2022-01-10 14:12:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:47,375 INFO L225 Difference]: With dead ends: 3588 [2022-01-10 14:12:47,375 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:47,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,378 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 1230 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:47,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1413 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.355641592920354) internal successors, (2451), 1808 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2451 transitions. [2022-01-10 14:12:47,463 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2451 transitions. Word has length 121 [2022-01-10 14:12:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:47,464 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2451 transitions. [2022-01-10 14:12:47,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2451 transitions. [2022-01-10 14:12:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:47,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:47,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:47,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 14:12:47,465 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash 671451893, now seen corresponding path program 1 times [2022-01-10 14:12:47,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:47,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599887252] [2022-01-10 14:12:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:47,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:47,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599887252] [2022-01-10 14:12:47,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599887252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:47,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:47,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:47,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319640500] [2022-01-10 14:12:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:47,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:47,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:47,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,492 INFO L87 Difference]: Start difference. First operand 1809 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:47,623 INFO L93 Difference]: Finished difference Result 3587 states and 4862 transitions. [2022-01-10 14:12:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:47,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:47,627 INFO L225 Difference]: With dead ends: 3587 [2022-01-10 14:12:47,627 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:47,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,630 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 1214 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:47,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1396 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3401548672566372) internal successors, (2423), 1808 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2423 transitions. [2022-01-10 14:12:47,715 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2423 transitions. Word has length 121 [2022-01-10 14:12:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:47,715 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2423 transitions. [2022-01-10 14:12:47,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2423 transitions. [2022-01-10 14:12:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:47,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:47,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:47,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 14:12:47,716 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash -643801132, now seen corresponding path program 1 times [2022-01-10 14:12:47,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:47,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299438639] [2022-01-10 14:12:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:47,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:47,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299438639] [2022-01-10 14:12:47,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299438639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:47,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:47,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:47,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95534410] [2022-01-10 14:12:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:47,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:47,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,746 INFO L87 Difference]: Start difference. First operand 1809 states and 2423 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:47,865 INFO L93 Difference]: Finished difference Result 3586 states and 4805 transitions. [2022-01-10 14:12:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:47,869 INFO L225 Difference]: With dead ends: 3586 [2022-01-10 14:12:47,869 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:47,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:47,873 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 1198 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:47,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 1379 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3246681415929205) internal successors, (2395), 1808 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2395 transitions. [2022-01-10 14:12:47,975 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2395 transitions. Word has length 121 [2022-01-10 14:12:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:47,975 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2395 transitions. [2022-01-10 14:12:47,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2395 transitions. [2022-01-10 14:12:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:47,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:47,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:47,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 14:12:47,976 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2102088141, now seen corresponding path program 1 times [2022-01-10 14:12:47,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502542681] [2022-01-10 14:12:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:47,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:48,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502542681] [2022-01-10 14:12:48,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502542681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:48,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:48,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:48,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607907840] [2022-01-10 14:12:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:48,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:48,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:48,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:48,012 INFO L87 Difference]: Start difference. First operand 1809 states and 2395 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:48,193 INFO L93 Difference]: Finished difference Result 3585 states and 4748 transitions. [2022-01-10 14:12:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:48,196 INFO L225 Difference]: With dead ends: 3585 [2022-01-10 14:12:48,196 INFO L226 Difference]: Without dead ends: 1809 [2022-01-10 14:12:48,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:48,199 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 1182 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:48,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 1362 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:48,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-01-10 14:12:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1809. [2022-01-10 14:12:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 1.3091814159292035) internal successors, (2367), 1808 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2367 transitions. [2022-01-10 14:12:48,325 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2367 transitions. Word has length 121 [2022-01-10 14:12:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:48,325 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 2367 transitions. [2022-01-10 14:12:48,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2367 transitions. [2022-01-10 14:12:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:48,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:48,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:48,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 14:12:48,326 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash -655064686, now seen corresponding path program 1 times [2022-01-10 14:12:48,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804397559] [2022-01-10 14:12:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:48,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:48,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:48,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804397559] [2022-01-10 14:12:48,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804397559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:48,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:48,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:48,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448467767] [2022-01-10 14:12:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:48,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:48,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:48,370 INFO L87 Difference]: Start difference. First operand 1809 states and 2367 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:48,601 INFO L93 Difference]: Finished difference Result 4244 states and 5604 transitions. [2022-01-10 14:12:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:48,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:48,605 INFO L225 Difference]: With dead ends: 4244 [2022-01-10 14:12:48,605 INFO L226 Difference]: Without dead ends: 2475 [2022-01-10 14:12:48,607 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 [2022-01-10 14:12:48,607 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 3660 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3660 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3660 Valid, 2248 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2022-01-10 14:12:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 1815. [2022-01-10 14:12:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1814 states have (on average 1.297133406835722) internal successors, (2353), 1814 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2353 transitions. [2022-01-10 14:12:48,720 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2353 transitions. Word has length 121 [2022-01-10 14:12:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:48,720 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 2353 transitions. [2022-01-10 14:12:48,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2353 transitions. [2022-01-10 14:12:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:48,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:48,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:48,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 14:12:48,721 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2140120237, now seen corresponding path program 1 times [2022-01-10 14:12:48,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:48,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608896631] [2022-01-10 14:12:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:48,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:48,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:48,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608896631] [2022-01-10 14:12:48,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608896631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:48,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:48,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:48,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106006735] [2022-01-10 14:12:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:48,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:48,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:48,767 INFO L87 Difference]: Start difference. First operand 1815 states and 2353 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:49,125 INFO L93 Difference]: Finished difference Result 4472 states and 5839 transitions. [2022-01-10 14:12:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:49,129 INFO L225 Difference]: With dead ends: 4472 [2022-01-10 14:12:49,129 INFO L226 Difference]: Without dead ends: 2711 [2022-01-10 14:12:49,130 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 [2022-01-10 14:12:49,131 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 3386 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:49,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3386 Valid, 3230 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-01-10 14:12:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 1821. [2022-01-10 14:12:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.2851648351648353) internal successors, (2339), 1820 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2339 transitions. [2022-01-10 14:12:49,301 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2339 transitions. Word has length 121 [2022-01-10 14:12:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:49,302 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 2339 transitions. [2022-01-10 14:12:49,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2339 transitions. [2022-01-10 14:12:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:49,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:49,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:49,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 14:12:49,303 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:49,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1671171732, now seen corresponding path program 1 times [2022-01-10 14:12:49,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:49,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028465928] [2022-01-10 14:12:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:49,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:49,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028465928] [2022-01-10 14:12:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028465928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:49,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:49,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:12:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055640322] [2022-01-10 14:12:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:12:49,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:12:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:12:49,365 INFO L87 Difference]: Start difference. First operand 1821 states and 2339 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:49,663 INFO L93 Difference]: Finished difference Result 4595 states and 5937 transitions. [2022-01-10 14:12:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:12:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:49,683 INFO L225 Difference]: With dead ends: 4595 [2022-01-10 14:12:49,683 INFO L226 Difference]: Without dead ends: 2835 [2022-01-10 14:12:49,685 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 [2022-01-10 14:12:49,685 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 3239 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3239 Valid, 3434 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-10 14:12:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1827. [2022-01-10 14:12:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.2732749178532312) internal successors, (2325), 1826 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2325 transitions. [2022-01-10 14:12:49,858 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2325 transitions. Word has length 121 [2022-01-10 14:12:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:49,858 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2325 transitions. [2022-01-10 14:12:49,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2325 transitions. [2022-01-10 14:12:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 14:12:49,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:49,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:49,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 14:12:49,859 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1319401835, now seen corresponding path program 1 times [2022-01-10 14:12:49,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:49,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944126026] [2022-01-10 14:12:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:49,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:49,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:49,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944126026] [2022-01-10 14:12:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944126026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:49,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:49,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:12:49,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474858731] [2022-01-10 14:12:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:49,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:49,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:49,962 INFO L87 Difference]: Start difference. First operand 1827 states and 2325 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:50,292 INFO L93 Difference]: Finished difference Result 5294 states and 6749 transitions. [2022-01-10 14:12:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:50,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2022-01-10 14:12:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:50,297 INFO L225 Difference]: With dead ends: 5294 [2022-01-10 14:12:50,297 INFO L226 Difference]: Without dead ends: 3502 [2022-01-10 14:12:50,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:50,299 INFO L933 BasicCegarLoop]: 1250 mSDtfsCounter, 1114 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:50,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 2349 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2022-01-10 14:12:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3378. [2022-01-10 14:12:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 1.270358306188925) internal successors, (4290), 3377 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4290 transitions. [2022-01-10 14:12:50,663 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4290 transitions. Word has length 121 [2022-01-10 14:12:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:50,663 INFO L470 AbstractCegarLoop]: Abstraction has 3378 states and 4290 transitions. [2022-01-10 14:12:50,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4290 transitions. [2022-01-10 14:12:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 14:12:50,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:50,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:50,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 14:12:50,666 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1011827443, now seen corresponding path program 1 times [2022-01-10 14:12:50,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:50,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267471742] [2022-01-10 14:12:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:50,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:50,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:50,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267471742] [2022-01-10 14:12:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267471742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:50,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:50,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:50,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989421556] [2022-01-10 14:12:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:50,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:50,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:50,785 INFO L87 Difference]: Start difference. First operand 3378 states and 4290 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:51,375 INFO L93 Difference]: Finished difference Result 9899 states and 12596 transitions. [2022-01-10 14:12:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2022-01-10 14:12:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:51,402 INFO L225 Difference]: With dead ends: 9899 [2022-01-10 14:12:51,402 INFO L226 Difference]: Without dead ends: 6562 [2022-01-10 14:12:51,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:51,425 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 1138 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:51,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2346 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2022-01-10 14:12:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6320. [2022-01-10 14:12:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6320 states, 6319 states have (on average 1.2682386453552776) internal successors, (8014), 6319 states have internal predecessors, (8014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6320 states to 6320 states and 8014 transitions. [2022-01-10 14:12:52,083 INFO L78 Accepts]: Start accepts. Automaton has 6320 states and 8014 transitions. Word has length 196 [2022-01-10 14:12:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:52,083 INFO L470 AbstractCegarLoop]: Abstraction has 6320 states and 8014 transitions. [2022-01-10 14:12:52,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6320 states and 8014 transitions. [2022-01-10 14:12:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 14:12:52,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:52,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:52,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 14:12:52,087 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1473430164, now seen corresponding path program 1 times [2022-01-10 14:12:52,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:52,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398625436] [2022-01-10 14:12:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:52,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:52,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:52,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398625436] [2022-01-10 14:12:52,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398625436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:52,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:52,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:52,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048407035] [2022-01-10 14:12:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:52,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:52,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:52,135 INFO L87 Difference]: Start difference. First operand 6320 states and 8014 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:53,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:53,470 INFO L93 Difference]: Finished difference Result 18589 states and 23450 transitions. [2022-01-10 14:12:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:53,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2022-01-10 14:12:53,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:53,488 INFO L225 Difference]: With dead ends: 18589 [2022-01-10 14:12:53,488 INFO L226 Difference]: Without dead ends: 12383 [2022-01-10 14:12:53,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:53,504 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 1132 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:53,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 2765 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:12:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12383 states. [2022-01-10 14:12:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12383 to 12157. [2022-01-10 14:12:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12157 states, 12156 states have (on average 1.255182625863771) internal successors, (15258), 12156 states have internal predecessors, (15258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12157 states to 12157 states and 15258 transitions. [2022-01-10 14:12:54,586 INFO L78 Accepts]: Start accepts. Automaton has 12157 states and 15258 transitions. Word has length 196 [2022-01-10 14:12:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:54,587 INFO L470 AbstractCegarLoop]: Abstraction has 12157 states and 15258 transitions. [2022-01-10 14:12:54,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12157 states and 15258 transitions. [2022-01-10 14:12:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 14:12:54,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:54,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:54,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 14:12:54,593 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -329488079, now seen corresponding path program 1 times [2022-01-10 14:12:54,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:54,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035060780] [2022-01-10 14:12:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:54,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:12:54,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035060780] [2022-01-10 14:12:54,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035060780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:54,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:54,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:54,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375960664] [2022-01-10 14:12:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:54,660 INFO L87 Difference]: Start difference. First operand 12157 states and 15258 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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) [2022-01-10 14:12:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:55,954 INFO L93 Difference]: Finished difference Result 24162 states and 30336 transitions. [2022-01-10 14:12:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:55,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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 196 [2022-01-10 14:12:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:55,967 INFO L225 Difference]: With dead ends: 24162 [2022-01-10 14:12:55,967 INFO L226 Difference]: Without dead ends: 12050 [2022-01-10 14:12:55,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:55,975 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 1254 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1260 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 [2022-01-10 14:12:55,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1260 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12050 states. [2022-01-10 14:12:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12050 to 12050. [2022-01-10 14:12:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12050 states, 12049 states have (on average 1.2557888621462363) internal successors, (15131), 12049 states have internal predecessors, (15131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12050 states to 12050 states and 15131 transitions. [2022-01-10 14:12:57,152 INFO L78 Accepts]: Start accepts. Automaton has 12050 states and 15131 transitions. Word has length 196 [2022-01-10 14:12:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:12:57,152 INFO L470 AbstractCegarLoop]: Abstraction has 12050 states and 15131 transitions. [2022-01-10 14:12:57,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 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) [2022-01-10 14:12:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12050 states and 15131 transitions. [2022-01-10 14:12:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 14:12:57,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:12:57,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:12:57,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-10 14:12:57,160 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:12:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:12:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash 934271543, now seen corresponding path program 1 times [2022-01-10 14:12:57,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:12:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32202426] [2022-01-10 14:12:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:12:57,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:12:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:12:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:12:57,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:12:57,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32202426] [2022-01-10 14:12:57,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32202426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:12:57,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:12:57,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:12:57,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157682283] [2022-01-10 14:12:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:12:57,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:12:57,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:12:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:12:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:57,217 INFO L87 Difference]: Start difference. First operand 12050 states and 15131 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:12:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:12:59,210 INFO L93 Difference]: Finished difference Result 34716 states and 43489 transitions. [2022-01-10 14:12:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:12:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 197 [2022-01-10 14:12:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:12:59,247 INFO L225 Difference]: With dead ends: 34716 [2022-01-10 14:12:59,248 INFO L226 Difference]: Without dead ends: 22780 [2022-01-10 14:12:59,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:12:59,266 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 953 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:12:59,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 3101 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:12:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22780 states. [2022-01-10 14:13:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22780 to 22778. [2022-01-10 14:13:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22778 states, 22777 states have (on average 1.249110945251789) internal successors, (28451), 22777 states have internal predecessors, (28451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22778 states to 22778 states and 28451 transitions. [2022-01-10 14:13:01,238 INFO L78 Accepts]: Start accepts. Automaton has 22778 states and 28451 transitions. Word has length 197 [2022-01-10 14:13:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:01,239 INFO L470 AbstractCegarLoop]: Abstraction has 22778 states and 28451 transitions. [2022-01-10 14:13:01,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22778 states and 28451 transitions. [2022-01-10 14:13:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 14:13:01,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:01,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:01,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-10 14:13:01,247 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:13:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 697653718, now seen corresponding path program 1 times [2022-01-10 14:13:01,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:01,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655106195] [2022-01-10 14:13:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:01,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:13:01,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:01,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655106195] [2022-01-10 14:13:01,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655106195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:01,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:01,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:01,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780978439] [2022-01-10 14:13:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:01,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:01,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:01,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:01,272 INFO L87 Difference]: Start difference. First operand 22778 states and 28451 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:13:03,273 INFO L93 Difference]: Finished difference Result 45336 states and 56644 transitions. [2022-01-10 14:13:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:13:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 197 [2022-01-10 14:13:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:13:03,300 INFO L225 Difference]: With dead ends: 45336 [2022-01-10 14:13:03,300 INFO L226 Difference]: Without dead ends: 22672 [2022-01-10 14:13:03,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:03,333 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 1252 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1259 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 [2022-01-10 14:13:03,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 1259 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22672 states. [2022-01-10 14:13:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22672 to 22672. [2022-01-10 14:13:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22672 states, 22671 states have (on average 1.2494376075162101) internal successors, (28326), 22671 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22672 states to 22672 states and 28326 transitions. [2022-01-10 14:13:05,279 INFO L78 Accepts]: Start accepts. Automaton has 22672 states and 28326 transitions. Word has length 197 [2022-01-10 14:13:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:05,279 INFO L470 AbstractCegarLoop]: Abstraction has 22672 states and 28326 transitions. [2022-01-10 14:13:05,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 22672 states and 28326 transitions. [2022-01-10 14:13:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 14:13:05,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:05,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:05,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-10 14:13:05,287 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:13:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1185449567, now seen corresponding path program 1 times [2022-01-10 14:13:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:05,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187748322] [2022-01-10 14:13:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:05,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:13:05,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:05,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187748322] [2022-01-10 14:13:05,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187748322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:05,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:05,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:05,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844372512] [2022-01-10 14:13:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:05,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:05,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:05,340 INFO L87 Difference]: Start difference. First operand 22672 states and 28326 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:13:08,656 INFO L93 Difference]: Finished difference Result 65533 states and 81778 transitions. [2022-01-10 14:13:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:13:08,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 198 [2022-01-10 14:13:08,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:13:08,716 INFO L225 Difference]: With dead ends: 65533 [2022-01-10 14:13:08,716 INFO L226 Difference]: Without dead ends: 42975 [2022-01-10 14:13:08,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:08,738 INFO L933 BasicCegarLoop]: 1832 mSDtfsCounter, 958 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:13:08,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 3068 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42975 states. [2022-01-10 14:13:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42975 to 42973. [2022-01-10 14:13:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42973 states, 42972 states have (on average 1.2456483291445593) internal successors, (53528), 42972 states have internal predecessors, (53528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42973 states to 42973 states and 53528 transitions. [2022-01-10 14:13:12,639 INFO L78 Accepts]: Start accepts. Automaton has 42973 states and 53528 transitions. Word has length 198 [2022-01-10 14:13:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:12,641 INFO L470 AbstractCegarLoop]: Abstraction has 42973 states and 53528 transitions. [2022-01-10 14:13:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 42973 states and 53528 transitions. [2022-01-10 14:13:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 14:13:12,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:12,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:12,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-10 14:13:12,657 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:13:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1422067392, now seen corresponding path program 1 times [2022-01-10 14:13:12,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331359636] [2022-01-10 14:13:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:12,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:13:12,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:12,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331359636] [2022-01-10 14:13:12,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331359636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:12,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:12,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:12,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082386764] [2022-01-10 14:13:12,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:12,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:12,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:12,725 INFO L87 Difference]: Start difference. First operand 42973 states and 53528 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:13:16,480 INFO L93 Difference]: Finished difference Result 85727 states and 106801 transitions. [2022-01-10 14:13:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:13:16,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 198 [2022-01-10 14:13:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:13:16,541 INFO L225 Difference]: With dead ends: 85727 [2022-01-10 14:13:16,542 INFO L226 Difference]: Without dead ends: 42868 [2022-01-10 14:13:16,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:16,570 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 1250 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1258 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 [2022-01-10 14:13:16,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 1258 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42868 states. [2022-01-10 14:13:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42868 to 42868. [2022-01-10 14:13:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42868 states, 42867 states have (on average 1.2458301257377469) internal successors, (53405), 42867 states have internal predecessors, (53405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42868 states to 42868 states and 53405 transitions. [2022-01-10 14:13:20,738 INFO L78 Accepts]: Start accepts. Automaton has 42868 states and 53405 transitions. Word has length 198 [2022-01-10 14:13:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:20,738 INFO L470 AbstractCegarLoop]: Abstraction has 42868 states and 53405 transitions. [2022-01-10 14:13:20,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 42868 states and 53405 transitions. [2022-01-10 14:13:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-10 14:13:20,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:20,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:20,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-10 14:13:20,752 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:13:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 799015846, now seen corresponding path program 1 times [2022-01-10 14:13:20,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:20,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331476421] [2022-01-10 14:13:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:20,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:13:20,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331476421] [2022-01-10 14:13:20,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331476421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:20,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:20,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:20,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658371241] [2022-01-10 14:13:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:20,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:20,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:20,792 INFO L87 Difference]: Start difference. First operand 42868 states and 53405 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:13:27,798 INFO L93 Difference]: Finished difference Result 125952 states and 156871 transitions. [2022-01-10 14:13:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:13:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 [2022-01-10 14:13:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:13:27,943 INFO L225 Difference]: With dead ends: 125952 [2022-01-10 14:13:27,943 INFO L226 Difference]: Without dead ends: 83198 [2022-01-10 14:13:27,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:27,989 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1133 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:13:27,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 2800 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:13:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83198 states. [2022-01-10 14:13:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83198 to 81148. [2022-01-10 14:13:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81148 states, 81147 states have (on average 1.2432375811798342) internal successors, (100885), 81147 states have internal predecessors, (100885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81148 states to 81148 states and 100885 transitions. [2022-01-10 14:13:35,711 INFO L78 Accepts]: Start accepts. Automaton has 81148 states and 100885 transitions. Word has length 199 [2022-01-10 14:13:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:13:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 81148 states and 100885 transitions. [2022-01-10 14:13:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:13:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 81148 states and 100885 transitions. [2022-01-10 14:13:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-10 14:13:35,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:13:35,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:13:35,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-10 14:13:35,897 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:13:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:13:35,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1730412551, now seen corresponding path program 1 times [2022-01-10 14:13:35,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:13:35,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94520811] [2022-01-10 14:13:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:13:35,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:13:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:13:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 14:13:35,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:13:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94520811] [2022-01-10 14:13:35,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94520811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:13:35,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:13:35,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:13:35,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964677001] [2022-01-10 14:13:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:13:35,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:13:35,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:13:35,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:13:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:13:35,932 INFO L87 Difference]: Start difference. First operand 81148 states and 100885 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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)