/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_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:00:23,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:00:23,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:00:23,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:00:23,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:00:23,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:00:23,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:00:23,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:00:23,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:00:23,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:00:23,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:00:23,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:00:23,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:00:23,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:00:23,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:00:23,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:00:23,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:00:23,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:00:23,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:00:23,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:00:23,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 20:00:23,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:00:23,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:00:23,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:00:23,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:00:23,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:00:23,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:00:23,442 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:00:23,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:00:23,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:00:23,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:00:23,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:00:23,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:00:23,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:00:23,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:00:23,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:00:23,446 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:00:23,446 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:00:23,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:00:23,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:00:23,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:00:23,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:00:23,706 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:00:23,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-10 20:00:23,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d917820/37614644e8b44684a9fc09fcda9ad43e/FLAGfa1974a7b [2022-01-10 20:00:24,242 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:00:24,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-10 20:00:24,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d917820/37614644e8b44684a9fc09fcda9ad43e/FLAGfa1974a7b [2022-01-10 20:00:24,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d917820/37614644e8b44684a9fc09fcda9ad43e [2022-01-10 20:00:24,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:00:24,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:00:24,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:00:24,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:00:24,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:00:24,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:24" (1/1) ... [2022-01-10 20:00:24,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187c3802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:24, skipping insertion in model container [2022-01-10 20:00:24,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:24" (1/1) ... [2022-01-10 20:00:24,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:00:24,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:00:24,851 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_1.cil-2+token_ring.05.cil-2.c[913,926] [2022-01-10 20:00:24,889 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_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2022-01-10 20:00:24,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:00:24,945 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:00:24,955 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_1.cil-2+token_ring.05.cil-2.c[913,926] [2022-01-10 20:00:24,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2022-01-10 20:00:25,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:00:25,051 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:00:25,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25 WrapperNode [2022-01-10 20:00:25,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:00:25,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:00:25,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:00:25,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:00:25,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,155 INFO L137 Inliner]: procedures = 59, calls = 64, calls flagged for inlining = 59, calls inlined = 114, statements flattened = 1606 [2022-01-10 20:00:25,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:00:25,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:00:25,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:00:25,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:00:25,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:00:25,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:00:25,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:00:25,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:00:25,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (1/1) ... [2022-01-10 20:00:25,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:00:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:00:25,296 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 20:00:25,322 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 20:00:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:00:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:00:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:00:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:00:25,454 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:00:25,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:00:26,523 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:00:26,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:00:26,540 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-10 20:00:26,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:26 BoogieIcfgContainer [2022-01-10 20:00:26,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:00:26,550 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:00:26,550 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:00:26,551 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:00:26,557 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:26" (1/1) ... [2022-01-10 20:00:26,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:00:26 BasicIcfg [2022-01-10 20:00:26,810 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:00:26,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:00:26,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:00:26,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:00:26,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:00:24" (1/4) ... [2022-01-10 20:00:26,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fce32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:00:26, skipping insertion in model container [2022-01-10 20:00:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:25" (2/4) ... [2022-01-10 20:00:26,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fce32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:00:26, skipping insertion in model container [2022-01-10 20:00:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:26" (3/4) ... [2022-01-10 20:00:26,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fce32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:00:26, skipping insertion in model container [2022-01-10 20:00:26,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:00:26" (4/4) ... [2022-01-10 20:00:26,819 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.cTransformedIcfg [2022-01-10 20:00:26,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:00:26,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 20:00:26,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:00:26,888 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 20:00:26,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 20:00:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 640 states, 635 states have (on average 1.5385826771653544) internal successors, (977), 639 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 20:00:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 20:00:26,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:26,927 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] [2022-01-10 20:00:26,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash -246763492, now seen corresponding path program 1 times [2022-01-10 20:00:26,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746635309] [2022-01-10 20:00:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:26,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,256 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 20:00:27,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746635309] [2022-01-10 20:00:27,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746635309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708887736] [2022-01-10 20:00:27,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,296 INFO L87 Difference]: Start difference. First operand has 640 states, 635 states have (on average 1.5385826771653544) internal successors, (977), 639 states have internal predecessors, (977), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 20:00:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,462 INFO L93 Difference]: Finished difference Result 1262 states and 1919 transitions. [2022-01-10 20:00:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-10 20:00:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,478 INFO L225 Difference]: With dead ends: 1262 [2022-01-10 20:00:27,478 INFO L226 Difference]: Without dead ends: 694 [2022-01-10 20:00:27,482 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 20:00:27,485 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 916 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1049 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:00:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-10 20:00:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 673. [2022-01-10 20:00:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 669 states have (on average 1.4902840059790732) internal successors, (997), 672 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 20:00:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 997 transitions. [2022-01-10 20:00:27,553 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 997 transitions. Word has length 36 [2022-01-10 20:00:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,554 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 997 transitions. [2022-01-10 20:00:27,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 20:00:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 997 transitions. [2022-01-10 20:00:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:00:27,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,556 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] [2022-01-10 20:00:27,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:00:27,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash -972631102, now seen corresponding path program 1 times [2022-01-10 20:00:27,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955903326] [2022-01-10 20:00:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,616 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 20:00:27,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955903326] [2022-01-10 20:00:27,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955903326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444079016] [2022-01-10 20:00:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,619 INFO L87 Difference]: Start difference. First operand 673 states and 997 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:00:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,657 INFO L93 Difference]: Finished difference Result 886 states and 1291 transitions. [2022-01-10 20:00:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 20:00:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,661 INFO L225 Difference]: With dead ends: 886 [2022-01-10 20:00:27,661 INFO L226 Difference]: Without dead ends: 775 [2022-01-10 20:00:27,662 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 20:00:27,663 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 907 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1022 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-10 20:00:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 771. [2022-01-10 20:00:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 767 states have (on average 1.4732724902216427) internal successors, (1130), 770 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 20:00:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1130 transitions. [2022-01-10 20:00:27,690 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1130 transitions. Word has length 37 [2022-01-10 20:00:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,691 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1130 transitions. [2022-01-10 20:00:27,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:00:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1130 transitions. [2022-01-10 20:00:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:00:27,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,693 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] [2022-01-10 20:00:27,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:00:27,693 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1595483868, now seen corresponding path program 1 times [2022-01-10 20:00:27,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907446592] [2022-01-10 20:00:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,753 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 20:00:27,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907446592] [2022-01-10 20:00:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907446592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509852385] [2022-01-10 20:00:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,756 INFO L87 Difference]: Start difference. First operand 771 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:00:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,799 INFO L93 Difference]: Finished difference Result 1090 states and 1569 transitions. [2022-01-10 20:00:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 20:00:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,804 INFO L225 Difference]: With dead ends: 1090 [2022-01-10 20:00:27,804 INFO L226 Difference]: Without dead ends: 881 [2022-01-10 20:00:27,808 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 20:00:27,811 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 60 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1831 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-01-10 20:00:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 857. [2022-01-10 20:00:27,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 853 states have (on average 1.4607268464243846) internal successors, (1246), 856 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 20:00:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1246 transitions. [2022-01-10 20:00:27,842 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1246 transitions. Word has length 37 [2022-01-10 20:00:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,843 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 1246 transitions. [2022-01-10 20:00:27,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 20:00:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1246 transitions. [2022-01-10 20:00:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 20:00:27,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,849 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] [2022-01-10 20:00:27,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:00:27,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1192533879, now seen corresponding path program 1 times [2022-01-10 20:00:27,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053065547] [2022-01-10 20:00:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,947 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 20:00:27,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053065547] [2022-01-10 20:00:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053065547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416833935] [2022-01-10 20:00:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,950 INFO L87 Difference]: Start difference. First operand 857 states and 1246 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 20:00:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,995 INFO L93 Difference]: Finished difference Result 1308 states and 1853 transitions. [2022-01-10 20:00:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,996 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 20:00:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,000 INFO L225 Difference]: With dead ends: 1308 [2022-01-10 20:00:28,000 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 20:00:28,003 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 20:00:28,010 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 48 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:28,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1911 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 20:00:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-10 20:00:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1009 states have (on average 1.421209117938553) internal successors, (1434), 1012 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states 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 20:00:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1434 transitions. [2022-01-10 20:00:28,068 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1434 transitions. Word has length 51 [2022-01-10 20:00:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:28,068 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1434 transitions. [2022-01-10 20:00:28,068 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 20:00:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1434 transitions. [2022-01-10 20:00:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 20:00:28,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:28,070 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] [2022-01-10 20:00:28,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:00:28,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash 299530207, now seen corresponding path program 1 times [2022-01-10 20:00:28,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196812449] [2022-01-10 20:00:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:28,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:28,130 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 20:00:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196812449] [2022-01-10 20:00:28,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196812449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:28,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:28,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:28,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254306646] [2022-01-10 20:00:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:28,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:28,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:28,133 INFO L87 Difference]: Start difference. First operand 1013 states and 1434 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 20:00:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:28,181 INFO L93 Difference]: Finished difference Result 1486 states and 2050 transitions. [2022-01-10 20:00:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 20:00:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,187 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 20:00:28,188 INFO L226 Difference]: Without dead ends: 1121 [2022-01-10 20:00:28,188 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 20:00:28,189 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 881 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1023 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 20:00:28,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1023 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-01-10 20:00:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2022-01-10 20:00:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1117 states have (on average 1.3983885407341092) internal successors, (1562), 1120 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states 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 20:00:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1562 transitions. [2022-01-10 20:00:28,222 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1562 transitions. Word has length 55 [2022-01-10 20:00:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:28,224 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1562 transitions. [2022-01-10 20:00:28,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 20:00:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1562 transitions. [2022-01-10 20:00:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:28,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:28,231 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, 1, 1, 1] [2022-01-10 20:00:28,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:00:28,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash -293643039, now seen corresponding path program 1 times [2022-01-10 20:00:28,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:28,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129159031] [2022-01-10 20:00:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:28,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:28,341 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 20:00:28,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:28,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129159031] [2022-01-10 20:00:28,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129159031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:28,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:28,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:28,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475010851] [2022-01-10 20:00:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:28,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:28,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:28,344 INFO L87 Difference]: Start difference. First operand 1121 states and 1562 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:28,469 INFO L93 Difference]: Finished difference Result 2204 states and 2966 transitions. [2022-01-10 20:00:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,476 INFO L225 Difference]: With dead ends: 2204 [2022-01-10 20:00:28,477 INFO L226 Difference]: Without dead ends: 1781 [2022-01-10 20:00:28,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 20:00:28,479 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 302 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:28,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3950 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-10 20:00:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1145. [2022-01-10 20:00:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1141 states have (on average 1.3865030674846626) internal successors, (1582), 1144 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 20:00:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1582 transitions. [2022-01-10 20:00:28,534 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1582 transitions. Word has length 56 [2022-01-10 20:00:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:28,535 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1582 transitions. [2022-01-10 20:00:28,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1582 transitions. [2022-01-10 20:00:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:28,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:28,536 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, 1, 1, 1] [2022-01-10 20:00:28,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:00:28,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 57156898, now seen corresponding path program 1 times [2022-01-10 20:00:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532328971] [2022-01-10 20:00:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:28,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:28,620 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 20:00:28,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:28,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532328971] [2022-01-10 20:00:28,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532328971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:28,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:28,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:28,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730779327] [2022-01-10 20:00:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:28,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:28,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:28,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:28,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:28,623 INFO L87 Difference]: Start difference. First operand 1145 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:28,753 INFO L93 Difference]: Finished difference Result 1934 states and 2592 transitions. [2022-01-10 20:00:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,760 INFO L225 Difference]: With dead ends: 1934 [2022-01-10 20:00:28,760 INFO L226 Difference]: Without dead ends: 1436 [2022-01-10 20:00:28,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:28,762 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 280 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:28,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 3892 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-01-10 20:00:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1043. [2022-01-10 20:00:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1039 states have (on average 1.3965351299326276) internal successors, (1451), 1042 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 20:00:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1451 transitions. [2022-01-10 20:00:28,815 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1451 transitions. Word has length 56 [2022-01-10 20:00:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:28,817 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1451 transitions. [2022-01-10 20:00:28,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 20:00:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1451 transitions. [2022-01-10 20:00:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:28,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:28,818 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, 1, 1, 1] [2022-01-10 20:00:28,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:00:28,819 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2020022654, now seen corresponding path program 1 times [2022-01-10 20:00:28,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:28,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396112279] [2022-01-10 20:00:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:28,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:28,936 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 20:00:28,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:28,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396112279] [2022-01-10 20:00:28,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396112279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:28,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:28,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:00:28,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121345584] [2022-01-10 20:00:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:28,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:00:28,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:00:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:00:28,939 INFO L87 Difference]: Start difference. First operand 1043 states and 1451 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 20:00:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:29,063 INFO L93 Difference]: Finished difference Result 1093 states and 1511 transitions. [2022-01-10 20:00:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:00:29,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 20:00:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:29,068 INFO L225 Difference]: With dead ends: 1093 [2022-01-10 20:00:29,068 INFO L226 Difference]: Without dead ends: 1091 [2022-01-10 20:00:29,068 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 20:00:29,069 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 1838 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:29,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 1004 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-10 20:00:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1041. [2022-01-10 20:00:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1038 states have (on average 1.394990366088632) internal successors, (1448), 1040 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states 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 20:00:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1448 transitions. [2022-01-10 20:00:29,136 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1448 transitions. Word has length 56 [2022-01-10 20:00:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:29,136 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1448 transitions. [2022-01-10 20:00:29,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 20:00:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1448 transitions. [2022-01-10 20:00:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 20:00:29,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:29,137 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, 1, 1, 1, 1] [2022-01-10 20:00:29,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:00:29,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1803808795, now seen corresponding path program 1 times [2022-01-10 20:00:29,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:29,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735981717] [2022-01-10 20:00:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:29,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:29,360 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 20:00:29,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735981717] [2022-01-10 20:00:29,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735981717] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:00:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363546724] [2022-01-10 20:00:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:29,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:00:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:00:29,367 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 20:00:29,394 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 20:00:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:29,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:00:29,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:00:29,874 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 20:00:29,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:00:30,243 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 20:00:30,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363546724] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:00:30,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:00:30,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 20:00:30,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813871651] [2022-01-10 20:00:30,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:00:30,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:00:30,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:00:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:00:30,245 INFO L87 Difference]: Start difference. First operand 1041 states and 1448 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 20:00:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:30,503 INFO L93 Difference]: Finished difference Result 1927 states and 2576 transitions. [2022-01-10 20:00:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:00:30,504 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 57 [2022-01-10 20:00:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:30,511 INFO L225 Difference]: With dead ends: 1927 [2022-01-10 20:00:30,512 INFO L226 Difference]: Without dead ends: 1925 [2022-01-10 20:00:30,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 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 20:00:30,513 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 2974 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:30,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2974 Valid, 4256 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-01-10 20:00:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1313. [2022-01-10 20:00:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1310 states have (on average 1.3748091603053436) internal successors, (1801), 1312 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 20:00:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1801 transitions. [2022-01-10 20:00:30,657 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1801 transitions. Word has length 57 [2022-01-10 20:00:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:30,657 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 1801 transitions. [2022-01-10 20:00:30,657 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 20:00:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1801 transitions. [2022-01-10 20:00:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 20:00:30,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:30,659 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:30,685 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 20:00:30,877 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 20:00:30,878 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash -491496044, now seen corresponding path program 2 times [2022-01-10 20:00:30,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:30,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030863216] [2022-01-10 20:00:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:30,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:30,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030863216] [2022-01-10 20:00:30,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030863216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:30,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:30,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:30,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060760803] [2022-01-10 20:00:30,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:30,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:30,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:30,916 INFO L87 Difference]: Start difference. First operand 1313 states and 1801 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 20:00:31,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:31,033 INFO L93 Difference]: Finished difference Result 1820 states and 2461 transitions. [2022-01-10 20:00:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:31,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 20:00:31,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:31,039 INFO L225 Difference]: With dead ends: 1820 [2022-01-10 20:00:31,039 INFO L226 Difference]: Without dead ends: 1224 [2022-01-10 20:00:31,041 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 20:00:31,042 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 885 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:31,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1038 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-01-10 20:00:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1198. [2022-01-10 20:00:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1195 states have (on average 1.3799163179916318) internal successors, (1649), 1197 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 20:00:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1649 transitions. [2022-01-10 20:00:31,144 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1649 transitions. Word has length 72 [2022-01-10 20:00:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,144 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1649 transitions. [2022-01-10 20:00:31,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 20:00:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1649 transitions. [2022-01-10 20:00:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 20:00:31,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,150 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:31,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:00:31,151 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:31,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash -35771476, now seen corresponding path program 1 times [2022-01-10 20:00:31,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142658503] [2022-01-10 20:00:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:00:31,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142658503] [2022-01-10 20:00:31,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142658503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:31,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501134633] [2022-01-10 20:00:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,213 INFO L87 Difference]: Start difference. First operand 1198 states and 1649 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 20:00:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:31,348 INFO L93 Difference]: Finished difference Result 1852 states and 2476 transitions. [2022-01-10 20:00:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:31,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 84 [2022-01-10 20:00:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:31,353 INFO L225 Difference]: With dead ends: 1852 [2022-01-10 20:00:31,353 INFO L226 Difference]: Without dead ends: 1216 [2022-01-10 20:00:31,354 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 20:00:31,354 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 870 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:31,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1026 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-10 20:00:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1198. [2022-01-10 20:00:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1195 states have (on average 1.3631799163179916) internal successors, (1629), 1197 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 20:00:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1629 transitions. [2022-01-10 20:00:31,452 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1629 transitions. Word has length 84 [2022-01-10 20:00:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,453 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1629 transitions. [2022-01-10 20:00:31,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 20:00:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1629 transitions. [2022-01-10 20:00:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 20:00:31,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,455 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:31,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:00:31,455 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1191532608, now seen corresponding path program 1 times [2022-01-10 20:00:31,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425573975] [2022-01-10 20:00:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:00:31,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425573975] [2022-01-10 20:00:31,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425573975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:31,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515209306] [2022-01-10 20:00:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,493 INFO L87 Difference]: Start difference. First operand 1198 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 20:00:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:31,573 INFO L93 Difference]: Finished difference Result 1462 states and 1947 transitions. [2022-01-10 20:00:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2022-01-10 20:00:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:31,576 INFO L225 Difference]: With dead ends: 1462 [2022-01-10 20:00:31,576 INFO L226 Difference]: Without dead ends: 556 [2022-01-10 20:00:31,578 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 20:00:31,578 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 56 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:31,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1868 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-10 20:00:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-01-10 20:00:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 554 states have (on average 1.5036101083032491) internal successors, (833), 555 states have internal predecessors, (833), 0 states have call successors, (0), 0 states 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 20:00:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 833 transitions. [2022-01-10 20:00:31,603 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 833 transitions. Word has length 85 [2022-01-10 20:00:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,603 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 833 transitions. [2022-01-10 20:00:31,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 20:00:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 833 transitions. [2022-01-10 20:00:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:31,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,604 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] [2022-01-10 20:00:31,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:00:31,605 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -477481333, now seen corresponding path program 1 times [2022-01-10 20:00:31,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931777328] [2022-01-10 20:00:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,635 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 20:00:31,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931777328] [2022-01-10 20:00:31,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931777328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:31,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414582006] [2022-01-10 20:00:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,637 INFO L87 Difference]: Start difference. First operand 556 states and 833 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:31,713 INFO L93 Difference]: Finished difference Result 1531 states and 2288 transitions. [2022-01-10 20:00:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:31,717 INFO L225 Difference]: With dead ends: 1531 [2022-01-10 20:00:31,717 INFO L226 Difference]: Without dead ends: 988 [2022-01-10 20:00:31,718 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 20:00:31,719 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 753 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:31,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1525 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-10 20:00:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 984. [2022-01-10 20:00:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4959266802443991) internal successors, (1469), 983 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states 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 20:00:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1469 transitions. [2022-01-10 20:00:31,773 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1469 transitions. Word has length 88 [2022-01-10 20:00:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,773 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1469 transitions. [2022-01-10 20:00:31,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1469 transitions. [2022-01-10 20:00:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:31,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,774 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] [2022-01-10 20:00:31,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:00:31,775 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1592947883, now seen corresponding path program 1 times [2022-01-10 20:00:31,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808023863] [2022-01-10 20:00:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,805 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 20:00:31,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808023863] [2022-01-10 20:00:31,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808023863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:31,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498119660] [2022-01-10 20:00:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,807 INFO L87 Difference]: Start difference. First operand 984 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:31,872 INFO L93 Difference]: Finished difference Result 1954 states and 2917 transitions. [2022-01-10 20:00:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:31,877 INFO L225 Difference]: With dead ends: 1954 [2022-01-10 20:00:31,877 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:31,879 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 20:00:31,879 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 813 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 821 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 20:00:31,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 821 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4877800407331976) internal successors, (1461), 983 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states 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 20:00:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1461 transitions. [2022-01-10 20:00:31,931 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1461 transitions. Word has length 88 [2022-01-10 20:00:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1461 transitions. [2022-01-10 20:00:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1461 transitions. [2022-01-10 20:00:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:31,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,933 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] [2022-01-10 20:00:31,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:00:31,933 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1803947381, now seen corresponding path program 1 times [2022-01-10 20:00:31,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005188779] [2022-01-10 20:00:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,964 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 20:00:31,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005188779] [2022-01-10 20:00:31,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005188779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911550423] [2022-01-10 20:00:31,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,966 INFO L87 Difference]: Start difference. First operand 984 states and 1461 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,031 INFO L93 Difference]: Finished difference Result 1953 states and 2900 transitions. [2022-01-10 20:00:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,036 INFO L225 Difference]: With dead ends: 1953 [2022-01-10 20:00:32,036 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,037 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 20:00:32,038 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 807 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 816 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 20:00:32,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 816 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4796334012219958) internal successors, (1453), 983 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states 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 20:00:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1453 transitions. [2022-01-10 20:00:32,108 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1453 transitions. Word has length 88 [2022-01-10 20:00:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:32,108 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1453 transitions. [2022-01-10 20:00:32,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1453 transitions. [2022-01-10 20:00:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:32,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:32,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:32,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:00:32,109 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:32,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 857421995, now seen corresponding path program 1 times [2022-01-10 20:00:32,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:32,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440295217] [2022-01-10 20:00:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:32,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:32,140 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 20:00:32,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:32,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440295217] [2022-01-10 20:00:32,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440295217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:32,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:32,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:32,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447842073] [2022-01-10 20:00:32,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:32,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:32,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,142 INFO L87 Difference]: Start difference. First operand 984 states and 1453 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,202 INFO L93 Difference]: Finished difference Result 1952 states and 2883 transitions. [2022-01-10 20:00:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,207 INFO L225 Difference]: With dead ends: 1952 [2022-01-10 20:00:32,207 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,208 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 20:00:32,209 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 801 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 811 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 20:00:32,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 811 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4714867617107943) internal successors, (1445), 983 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 20:00:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1445 transitions. [2022-01-10 20:00:32,269 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1445 transitions. Word has length 88 [2022-01-10 20:00:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:32,270 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1445 transitions. [2022-01-10 20:00:32,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1445 transitions. [2022-01-10 20:00:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:32,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:32,271 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] [2022-01-10 20:00:32,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:00:32,271 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash -165106037, now seen corresponding path program 1 times [2022-01-10 20:00:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97244128] [2022-01-10 20:00:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:32,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:32,302 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 20:00:32,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:32,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97244128] [2022-01-10 20:00:32,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97244128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:32,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:32,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:32,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909240676] [2022-01-10 20:00:32,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:32,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:32,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,304 INFO L87 Difference]: Start difference. First operand 984 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,369 INFO L93 Difference]: Finished difference Result 1951 states and 2866 transitions. [2022-01-10 20:00:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,374 INFO L225 Difference]: With dead ends: 1951 [2022-01-10 20:00:32,374 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,376 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 20:00:32,377 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 795 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 806 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 20:00:32,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 806 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4633401221995928) internal successors, (1437), 983 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 20:00:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1437 transitions. [2022-01-10 20:00:32,432 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1437 transitions. Word has length 88 [2022-01-10 20:00:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:32,432 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1437 transitions. [2022-01-10 20:00:32,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1437 transitions. [2022-01-10 20:00:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:32,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:32,433 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] [2022-01-10 20:00:32,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 20:00:32,433 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1029374805, now seen corresponding path program 1 times [2022-01-10 20:00:32,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063269329] [2022-01-10 20:00:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:32,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:32,479 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 20:00:32,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:32,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063269329] [2022-01-10 20:00:32,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063269329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:32,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:32,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:32,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654638446] [2022-01-10 20:00:32,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:32,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:32,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:32,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,481 INFO L87 Difference]: Start difference. First operand 984 states and 1437 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,545 INFO L93 Difference]: Finished difference Result 1950 states and 2849 transitions. [2022-01-10 20:00:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,549 INFO L225 Difference]: With dead ends: 1950 [2022-01-10 20:00:32,550 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,551 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 20:00:32,552 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 789 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 801 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 20:00:32,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 801 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.455193482688391) internal successors, (1429), 983 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states 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 20:00:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1429 transitions. [2022-01-10 20:00:32,607 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1429 transitions. Word has length 88 [2022-01-10 20:00:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:32,607 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1429 transitions. [2022-01-10 20:00:32,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1429 transitions. [2022-01-10 20:00:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:32,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:32,608 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] [2022-01-10 20:00:32,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 20:00:32,609 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 743860875, now seen corresponding path program 1 times [2022-01-10 20:00:32,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968945328] [2022-01-10 20:00:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:32,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:32,639 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 20:00:32,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:32,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968945328] [2022-01-10 20:00:32,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968945328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:32,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:32,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:32,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172287632] [2022-01-10 20:00:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:32,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:32,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,642 INFO L87 Difference]: Start difference. First operand 984 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,729 INFO L93 Difference]: Finished difference Result 1949 states and 2832 transitions. [2022-01-10 20:00:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,733 INFO L225 Difference]: With dead ends: 1949 [2022-01-10 20:00:32,733 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,735 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 20:00:32,736 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 713 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:32,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 838 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4327902240325865) internal successors, (1407), 983 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states 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 20:00:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1407 transitions. [2022-01-10 20:00:32,791 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1407 transitions. Word has length 88 [2022-01-10 20:00:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:32,792 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1407 transitions. [2022-01-10 20:00:32,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1407 transitions. [2022-01-10 20:00:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:32,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:32,793 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] [2022-01-10 20:00:32,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 20:00:32,793 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1914952662, now seen corresponding path program 1 times [2022-01-10 20:00:32,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:32,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481600049] [2022-01-10 20:00:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:32,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:32,833 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 20:00:32,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:32,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481600049] [2022-01-10 20:00:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481600049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:32,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:32,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:32,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498829984] [2022-01-10 20:00:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:32,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:32,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,836 INFO L87 Difference]: Start difference. First operand 984 states and 1407 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,931 INFO L93 Difference]: Finished difference Result 1948 states and 2787 transitions. [2022-01-10 20:00:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,935 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 20:00:32,936 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:32,937 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 20:00:32,938 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 700 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:32,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 824 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.410386965376782) internal successors, (1385), 983 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states 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 20:00:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1385 transitions. [2022-01-10 20:00:33,000 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1385 transitions. Word has length 88 [2022-01-10 20:00:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,000 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1385 transitions. [2022-01-10 20:00:33,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1385 transitions. [2022-01-10 20:00:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:33,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,002 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] [2022-01-10 20:00:33,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 20:00:33,002 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1898956599, now seen corresponding path program 1 times [2022-01-10 20:00:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20062500] [2022-01-10 20:00:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:33,031 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 20:00:33,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20062500] [2022-01-10 20:00:33,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20062500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:33,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:33,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566672764] [2022-01-10 20:00:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:33,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:33,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:33,033 INFO L87 Difference]: Start difference. First operand 984 states and 1385 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:33,126 INFO L93 Difference]: Finished difference Result 1947 states and 2742 transitions. [2022-01-10 20:00:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:33,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:33,130 INFO L225 Difference]: With dead ends: 1947 [2022-01-10 20:00:33,130 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:33,132 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 20:00:33,133 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 687 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:33,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 810 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:33,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3879837067209777) internal successors, (1363), 983 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states 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 20:00:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1363 transitions. [2022-01-10 20:00:33,193 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1363 transitions. Word has length 88 [2022-01-10 20:00:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,193 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1363 transitions. [2022-01-10 20:00:33,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1363 transitions. [2022-01-10 20:00:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:33,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,194 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] [2022-01-10 20:00:33,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 20:00:33,195 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash 533135592, now seen corresponding path program 1 times [2022-01-10 20:00:33,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569264017] [2022-01-10 20:00:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:33,224 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 20:00:33,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569264017] [2022-01-10 20:00:33,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569264017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:33,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:33,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:33,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541376207] [2022-01-10 20:00:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:33,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:33,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:33,226 INFO L87 Difference]: Start difference. First operand 984 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:33,323 INFO L93 Difference]: Finished difference Result 1946 states and 2697 transitions. [2022-01-10 20:00:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:33,327 INFO L225 Difference]: With dead ends: 1946 [2022-01-10 20:00:33,328 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:33,330 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 20:00:33,331 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 674 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:33,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 796 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3655804480651732) internal successors, (1341), 983 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states 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 20:00:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1341 transitions. [2022-01-10 20:00:33,406 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1341 transitions. Word has length 88 [2022-01-10 20:00:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,407 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1341 transitions. [2022-01-10 20:00:33,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1341 transitions. [2022-01-10 20:00:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:33,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,408 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] [2022-01-10 20:00:33,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 20:00:33,409 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -527174649, now seen corresponding path program 1 times [2022-01-10 20:00:33,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112662171] [2022-01-10 20:00:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:33,442 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 20:00:33,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:33,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112662171] [2022-01-10 20:00:33,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112662171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:33,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:33,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:33,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295113118] [2022-01-10 20:00:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:33,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:33,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:33,444 INFO L87 Difference]: Start difference. First operand 984 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:33,540 INFO L93 Difference]: Finished difference Result 1944 states and 2650 transitions. [2022-01-10 20:00:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:33,544 INFO L225 Difference]: With dead ends: 1944 [2022-01-10 20:00:33,544 INFO L226 Difference]: Without dead ends: 984 [2022-01-10 20:00:33,547 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 20:00:33,548 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 660 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:33,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 782 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-10 20:00:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-10 20:00:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3431771894093687) internal successors, (1319), 983 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states 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 20:00:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1319 transitions. [2022-01-10 20:00:33,616 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1319 transitions. Word has length 88 [2022-01-10 20:00:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,617 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1319 transitions. [2022-01-10 20:00:33,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1319 transitions. [2022-01-10 20:00:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:33,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,618 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] [2022-01-10 20:00:33,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 20:00:33,618 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1642232410, now seen corresponding path program 1 times [2022-01-10 20:00:33,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380807199] [2022-01-10 20:00:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:33,668 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 20:00:33,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:33,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380807199] [2022-01-10 20:00:33,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380807199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:33,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:33,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:33,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030976263] [2022-01-10 20:00:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:33,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:33,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:33,670 INFO L87 Difference]: Start difference. First operand 984 states and 1319 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:33,871 INFO L93 Difference]: Finished difference Result 2411 states and 3268 transitions. [2022-01-10 20:00:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:33,887 INFO L225 Difference]: With dead ends: 2411 [2022-01-10 20:00:33,888 INFO L226 Difference]: Without dead ends: 1458 [2022-01-10 20:00:33,889 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 20:00:33,890 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 2049 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:33,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 1805 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:00:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-01-10 20:00:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 990. [2022-01-10 20:00:33,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 988 states have (on average 1.3269230769230769) internal successors, (1311), 989 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states 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 20:00:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1311 transitions. [2022-01-10 20:00:33,965 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1311 transitions. Word has length 88 [2022-01-10 20:00:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,965 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1311 transitions. [2022-01-10 20:00:33,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:33,966 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1311 transitions. [2022-01-10 20:00:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:33,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,966 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] [2022-01-10 20:00:33,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 20:00:33,967 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1361882521, now seen corresponding path program 1 times [2022-01-10 20:00:33,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891232628] [2022-01-10 20:00:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:34,006 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 20:00:34,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891232628] [2022-01-10 20:00:34,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891232628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:34,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:34,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:34,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849010155] [2022-01-10 20:00:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:34,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:34,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:34,009 INFO L87 Difference]: Start difference. First operand 990 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:34,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:34,235 INFO L93 Difference]: Finished difference Result 2555 states and 3413 transitions. [2022-01-10 20:00:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:34,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:34,239 INFO L225 Difference]: With dead ends: 2555 [2022-01-10 20:00:34,239 INFO L226 Difference]: Without dead ends: 1610 [2022-01-10 20:00:34,241 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 20:00:34,242 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1835 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:34,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 2119 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:00:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-01-10 20:00:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 996. [2022-01-10 20:00:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 994 states have (on average 1.3108651911468814) internal successors, (1303), 995 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states 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 20:00:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1303 transitions. [2022-01-10 20:00:34,328 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1303 transitions. Word has length 88 [2022-01-10 20:00:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1303 transitions. [2022-01-10 20:00:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1303 transitions. [2022-01-10 20:00:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:34,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:34,329 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] [2022-01-10 20:00:34,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 20:00:34,330 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 609056936, now seen corresponding path program 1 times [2022-01-10 20:00:34,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:34,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277729907] [2022-01-10 20:00:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:34,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:34,378 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 20:00:34,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277729907] [2022-01-10 20:00:34,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277729907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:34,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:34,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:34,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235309283] [2022-01-10 20:00:34,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:34,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:34,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:34,380 INFO L87 Difference]: Start difference. First operand 996 states and 1303 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:34,639 INFO L93 Difference]: Finished difference Result 2636 states and 3475 transitions. [2022-01-10 20:00:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:34,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:34,644 INFO L225 Difference]: With dead ends: 2636 [2022-01-10 20:00:34,644 INFO L226 Difference]: Without dead ends: 1692 [2022-01-10 20:00:34,645 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 20:00:34,645 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1743 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:34,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 2208 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:00:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-10 20:00:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1002. [2022-01-10 20:00:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1000 states have (on average 1.295) internal successors, (1295), 1001 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 20:00:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1295 transitions. [2022-01-10 20:00:34,761 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1295 transitions. Word has length 88 [2022-01-10 20:00:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:34,761 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1295 transitions. [2022-01-10 20:00:34,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1295 transitions. [2022-01-10 20:00:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:34,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:34,762 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] [2022-01-10 20:00:34,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 20:00:34,763 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1326603351, now seen corresponding path program 1 times [2022-01-10 20:00:34,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:34,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530342981] [2022-01-10 20:00:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:34,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:34,795 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 20:00:34,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530342981] [2022-01-10 20:00:34,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530342981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:34,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:34,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:34,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208698190] [2022-01-10 20:00:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:34,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:34,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:34,797 INFO L87 Difference]: Start difference. First operand 1002 states and 1295 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:34,998 INFO L93 Difference]: Finished difference Result 2766 states and 3576 transitions. [2022-01-10 20:00:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:34,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:35,002 INFO L225 Difference]: With dead ends: 2766 [2022-01-10 20:00:35,002 INFO L226 Difference]: Without dead ends: 1818 [2022-01-10 20:00:35,004 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 20:00:35,005 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 584 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:35,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1303 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-01-10 20:00:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1810. [2022-01-10 20:00:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.2865044247787611) internal successors, (2326), 1809 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states 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 20:00:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2326 transitions. [2022-01-10 20:00:35,194 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2326 transitions. Word has length 88 [2022-01-10 20:00:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:35,194 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 2326 transitions. [2022-01-10 20:00:35,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2326 transitions. [2022-01-10 20:00:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:35,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:35,195 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] [2022-01-10 20:00:35,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 20:00:35,196 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1016321064, now seen corresponding path program 1 times [2022-01-10 20:00:35,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081695042] [2022-01-10 20:00:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:35,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:35,234 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 20:00:35,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:35,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081695042] [2022-01-10 20:00:35,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081695042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:35,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:35,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:35,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75627758] [2022-01-10 20:00:35,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:35,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:35,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:35,236 INFO L87 Difference]: Start difference. First operand 1810 states and 2326 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:35,431 INFO L93 Difference]: Finished difference Result 3597 states and 4622 transitions. [2022-01-10 20:00:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:35,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:35,435 INFO L225 Difference]: With dead ends: 3597 [2022-01-10 20:00:35,435 INFO L226 Difference]: Without dead ends: 1810 [2022-01-10 20:00:35,437 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 20:00:35,438 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 577 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:35,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 740 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-10 20:00:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-01-10 20:00:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.271570796460177) internal successors, (2299), 1809 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states 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 20:00:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2299 transitions. [2022-01-10 20:00:35,628 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2299 transitions. Word has length 88 [2022-01-10 20:00:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:35,628 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 2299 transitions. [2022-01-10 20:00:35,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2299 transitions. [2022-01-10 20:00:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 20:00:35,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:35,629 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] [2022-01-10 20:00:35,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 20:00:35,630 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1925336535, now seen corresponding path program 1 times [2022-01-10 20:00:35,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:35,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169590138] [2022-01-10 20:00:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:35,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:35,666 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 20:00:35,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:35,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169590138] [2022-01-10 20:00:35,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169590138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:35,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:35,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:35,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185243881] [2022-01-10 20:00:35,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:35,669 INFO L87 Difference]: Start difference. First operand 1810 states and 2299 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:36,036 INFO L93 Difference]: Finished difference Result 5248 states and 6660 transitions. [2022-01-10 20:00:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:36,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 20:00:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:36,044 INFO L225 Difference]: With dead ends: 5248 [2022-01-10 20:00:36,044 INFO L226 Difference]: Without dead ends: 3464 [2022-01-10 20:00:36,047 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 20:00:36,048 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 579 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:36,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 1278 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-01-10 20:00:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3302. [2022-01-10 20:00:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 3300 states have (on average 1.2621212121212122) internal successors, (4165), 3301 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states 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 20:00:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4165 transitions. [2022-01-10 20:00:36,429 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4165 transitions. Word has length 88 [2022-01-10 20:00:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:36,429 INFO L470 AbstractCegarLoop]: Abstraction has 3302 states and 4165 transitions. [2022-01-10 20:00:36,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 20:00:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4165 transitions. [2022-01-10 20:00:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 20:00:36,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:36,432 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] [2022-01-10 20:00:36,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 20:00:36,432 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1846338142, now seen corresponding path program 1 times [2022-01-10 20:00:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695805821] [2022-01-10 20:00:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:36,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:36,482 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 20:00:36,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:36,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695805821] [2022-01-10 20:00:36,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695805821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:36,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:36,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:36,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987611993] [2022-01-10 20:00:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:36,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:36,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:36,484 INFO L87 Difference]: Start difference. First operand 3302 states and 4165 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 20:00:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:37,192 INFO L93 Difference]: Finished difference Result 9667 states and 12220 transitions. [2022-01-10 20:00:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 20:00:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:37,206 INFO L225 Difference]: With dead ends: 9667 [2022-01-10 20:00:37,206 INFO L226 Difference]: Without dead ends: 6397 [2022-01-10 20:00:37,212 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 20:00:37,213 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 605 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:37,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1275 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-01-10 20:00:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6085. [2022-01-10 20:00:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6083 states have (on average 1.2597402597402598) internal successors, (7663), 6084 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states 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 20:00:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 7663 transitions. [2022-01-10 20:00:37,837 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 7663 transitions. Word has length 142 [2022-01-10 20:00:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:37,837 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 7663 transitions. [2022-01-10 20:00:37,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 20:00:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 7663 transitions. [2022-01-10 20:00:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 20:00:37,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:37,841 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] [2022-01-10 20:00:37,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 20:00:37,842 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash 85064545, now seen corresponding path program 1 times [2022-01-10 20:00:37,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:37,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571507039] [2022-01-10 20:00:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:37,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:37,885 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 20:00:37,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:37,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571507039] [2022-01-10 20:00:37,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571507039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:37,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:37,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:37,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821402739] [2022-01-10 20:00:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:37,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:37,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:37,887 INFO L87 Difference]: Start difference. First operand 6085 states and 7663 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 20:00:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:39,127 INFO L93 Difference]: Finished difference Result 17815 states and 22283 transitions. [2022-01-10 20:00:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:39,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 20:00:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:39,153 INFO L225 Difference]: With dead ends: 17815 [2022-01-10 20:00:39,153 INFO L226 Difference]: Without dead ends: 11807 [2022-01-10 20:00:39,167 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 20:00:39,167 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 608 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:39,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1511 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11807 states. [2022-01-10 20:00:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11807 to 11527. [2022-01-10 20:00:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 11525 states have (on average 1.2413882863340564) internal successors, (14307), 11526 states have internal predecessors, (14307), 0 states have call successors, (0), 0 states 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 20:00:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 14307 transitions. [2022-01-10 20:00:40,237 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 14307 transitions. Word has length 142 [2022-01-10 20:00:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 11527 states and 14307 transitions. [2022-01-10 20:00:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 20:00:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 14307 transitions. [2022-01-10 20:00:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 20:00:40,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:40,243 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] [2022-01-10 20:00:40,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 20:00:40,244 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1817305474, now seen corresponding path program 1 times [2022-01-10 20:00:40,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:40,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252923180] [2022-01-10 20:00:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:40,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:40,280 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 20:00:40,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:40,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252923180] [2022-01-10 20:00:40,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252923180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:40,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:40,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:40,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696646608] [2022-01-10 20:00:40,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:40,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:40,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:40,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:40,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:40,282 INFO L87 Difference]: Start difference. First operand 11527 states and 14307 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 20:00:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:41,161 INFO L93 Difference]: Finished difference Result 22948 states and 28491 transitions. [2022-01-10 20:00:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:41,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 142 [2022-01-10 20:00:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:41,186 INFO L225 Difference]: With dead ends: 22948 [2022-01-10 20:00:41,186 INFO L226 Difference]: Without dead ends: 11457 [2022-01-10 20:00:41,202 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 20:00:41,202 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 691 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 697 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 20:00:41,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2022-01-10 20:00:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11457. [2022-01-10 20:00:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11457 states, 11455 states have (on average 1.2419030990833697) internal successors, (14226), 11456 states have internal predecessors, (14226), 0 states have call successors, (0), 0 states 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 20:00:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 14226 transitions. [2022-01-10 20:00:42,263 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 14226 transitions. Word has length 142 [2022-01-10 20:00:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:42,264 INFO L470 AbstractCegarLoop]: Abstraction has 11457 states and 14226 transitions. [2022-01-10 20:00:42,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 20:00:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 14226 transitions. [2022-01-10 20:00:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:00:42,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:42,271 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] [2022-01-10 20:00:42,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 20:00:42,272 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1515644078, now seen corresponding path program 1 times [2022-01-10 20:00:42,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123929730] [2022-01-10 20:00:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:42,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:42,324 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 20:00:42,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123929730] [2022-01-10 20:00:42,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123929730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:42,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:42,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:42,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144461897] [2022-01-10 20:00:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:42,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:42,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:42,326 INFO L87 Difference]: Start difference. First operand 11457 states and 14226 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 20:00:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:43,895 INFO L93 Difference]: Finished difference Result 32494 states and 40244 transitions. [2022-01-10 20:00:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 20:00:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:43,954 INFO L225 Difference]: With dead ends: 32494 [2022-01-10 20:00:43,954 INFO L226 Difference]: Without dead ends: 21114 [2022-01-10 20:00:43,977 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 20:00:43,977 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 486 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1635 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 20:00:43,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1635 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2022-01-10 20:00:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 21110. [2022-01-10 20:00:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21110 states, 21108 states have (on average 1.2328974796285768) internal successors, (26024), 21109 states have internal predecessors, (26024), 0 states have call successors, (0), 0 states 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 20:00:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21110 states to 21110 states and 26024 transitions. [2022-01-10 20:00:45,558 INFO L78 Accepts]: Start accepts. Automaton has 21110 states and 26024 transitions. Word has length 143 [2022-01-10 20:00:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:45,560 INFO L470 AbstractCegarLoop]: Abstraction has 21110 states and 26024 transitions. [2022-01-10 20:00:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 20:00:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 21110 states and 26024 transitions. [2022-01-10 20:00:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 20:00:45,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:45,574 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] [2022-01-10 20:00:45,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 20:00:45,575 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash 840783921, now seen corresponding path program 1 times [2022-01-10 20:00:45,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:45,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719881152] [2022-01-10 20:00:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:45,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:45,608 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 20:00:45,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719881152] [2022-01-10 20:00:45,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719881152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:45,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:45,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:45,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343135509] [2022-01-10 20:00:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:45,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:45,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:45,610 INFO L87 Difference]: Start difference. First operand 21110 states and 26024 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 20:00:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:47,260 INFO L93 Difference]: Finished difference Result 42074 states and 51882 transitions. [2022-01-10 20:00:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 143 [2022-01-10 20:00:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:47,297 INFO L225 Difference]: With dead ends: 42074 [2022-01-10 20:00:47,297 INFO L226 Difference]: Without dead ends: 21041 [2022-01-10 20:00:47,408 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 20:00:47,409 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 689 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 696 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 20:00:47,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21041 states. [2022-01-10 20:00:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21041 to 21041. [2022-01-10 20:00:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21041 states, 21039 states have (on average 1.233185987927183) internal successors, (25945), 21040 states have internal predecessors, (25945), 0 states have call successors, (0), 0 states 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 20:00:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21041 states to 21041 states and 25945 transitions. [2022-01-10 20:00:48,918 INFO L78 Accepts]: Start accepts. Automaton has 21041 states and 25945 transitions. Word has length 143 [2022-01-10 20:00:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:48,918 INFO L470 AbstractCegarLoop]: Abstraction has 21041 states and 25945 transitions. [2022-01-10 20:00:48,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 20:00:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21041 states and 25945 transitions. [2022-01-10 20:00:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 20:00:48,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:48,928 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] [2022-01-10 20:00:48,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 20:00:48,929 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash -562675146, now seen corresponding path program 1 times [2022-01-10 20:00:48,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:48,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648846632] [2022-01-10 20:00:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:48,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:48,993 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 20:00:48,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:48,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648846632] [2022-01-10 20:00:48,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648846632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:48,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:48,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:48,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101475038] [2022-01-10 20:00:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:48,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:48,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:48,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:48,995 INFO L87 Difference]: Start difference. First operand 21041 states and 25945 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 20:00:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:51,811 INFO L93 Difference]: Finished difference Result 59837 states and 73737 transitions. [2022-01-10 20:00:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-01-10 20:00:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:51,884 INFO L225 Difference]: With dead ends: 59837 [2022-01-10 20:00:51,884 INFO L226 Difference]: Without dead ends: 38873 [2022-01-10 20:00:51,902 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 20:00:51,903 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 491 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1604 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 20:00:51,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1604 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38873 states. [2022-01-10 20:00:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38873 to 38869. [2022-01-10 20:00:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38869 states, 38867 states have (on average 1.2289345717446678) internal successors, (47765), 38868 states have internal predecessors, (47765), 0 states have call successors, (0), 0 states 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 20:00:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38869 states to 38869 states and 47765 transitions. [2022-01-10 20:00:54,687 INFO L78 Accepts]: Start accepts. Automaton has 38869 states and 47765 transitions. Word has length 144 [2022-01-10 20:00:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 38869 states and 47765 transitions. [2022-01-10 20:00:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 20:00:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 38869 states and 47765 transitions. [2022-01-10 20:00:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 20:00:54,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:54,704 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] [2022-01-10 20:00:54,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 20:00:54,705 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:00:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1793752853, now seen corresponding path program 1 times [2022-01-10 20:00:54,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409348753] [2022-01-10 20:00:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:54,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:54,736 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 20:00:54,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:54,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409348753] [2022-01-10 20:00:54,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409348753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:54,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:54,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:54,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876630518] [2022-01-10 20:00:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:54,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:54,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:54,738 INFO L87 Difference]: Start difference. First operand 38869 states and 47765 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:57,757 INFO L93 Difference]: Finished difference Result 77593 states and 95367 transitions. [2022-01-10 20:00:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:57,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-10 20:00:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:57,823 INFO L225 Difference]: With dead ends: 77593 [2022-01-10 20:00:57,823 INFO L226 Difference]: Without dead ends: 38801 [2022-01-10 20:00:57,860 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 20:00:57,860 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 687 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 695 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 20:00:57,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 695 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38801 states. [2022-01-10 20:01:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38801 to 38801. [2022-01-10 20:01:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38801 states, 38799 states have (on average 1.2291038428825485) internal successors, (47688), 38800 states have internal predecessors, (47688), 0 states have call successors, (0), 0 states 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 20:01:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38801 states to 38801 states and 47688 transitions. [2022-01-10 20:01:00,645 INFO L78 Accepts]: Start accepts. Automaton has 38801 states and 47688 transitions. Word has length 144 [2022-01-10 20:01:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:00,645 INFO L470 AbstractCegarLoop]: Abstraction has 38801 states and 47688 transitions. [2022-01-10 20:01:00,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 38801 states and 47688 transitions. [2022-01-10 20:01:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 20:01:00,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:00,660 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] [2022-01-10 20:01:00,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 20:01:00,660 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:01:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 895806849, now seen corresponding path program 1 times [2022-01-10 20:01:00,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:00,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786763157] [2022-01-10 20:01:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:00,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:00,708 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 20:01:00,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:00,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786763157] [2022-01-10 20:01:00,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786763157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:00,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:00,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:01:00,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092720366] [2022-01-10 20:01:00,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:00,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:01:00,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:00,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:01:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:00,711 INFO L87 Difference]: Start difference. First operand 38801 states and 47688 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 20:01:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:01:05,931 INFO L93 Difference]: Finished difference Result 113708 states and 139670 transitions. [2022-01-10 20:01:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:01:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-10 20:01:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:01:06,051 INFO L225 Difference]: With dead ends: 113708 [2022-01-10 20:01:06,052 INFO L226 Difference]: Without dead ends: 74984 [2022-01-10 20:01:06,094 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 20:01:06,094 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 609 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:01:06,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1500 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:01:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74984 states. [2022-01-10 20:01:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74984 to 74276. [2022-01-10 20:01:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74276 states, 74274 states have (on average 1.2251124215741713) internal successors, (90994), 74275 states have internal predecessors, (90994), 0 states have call successors, (0), 0 states 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 20:01:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74276 states to 74276 states and 90994 transitions. [2022-01-10 20:01:11,711 INFO L78 Accepts]: Start accepts. Automaton has 74276 states and 90994 transitions. Word has length 145 [2022-01-10 20:01:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:11,712 INFO L470 AbstractCegarLoop]: Abstraction has 74276 states and 90994 transitions. [2022-01-10 20:01:11,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 20:01:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 74276 states and 90994 transitions. [2022-01-10 20:01:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 20:01:11,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:11,734 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] [2022-01-10 20:01:11,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 20:01:11,734 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:01:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:11,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1045666466, now seen corresponding path program 1 times [2022-01-10 20:01:11,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:11,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532699566] [2022-01-10 20:01:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:11,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:11,768 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 20:01:11,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:11,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532699566] [2022-01-10 20:01:11,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532699566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:11,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:11,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:01:11,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940310727] [2022-01-10 20:01:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:11,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:01:11,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:01:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:11,771 INFO L87 Difference]: Start difference. First operand 74276 states and 90994 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 20:01:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:01:16,280 INFO L93 Difference]: Finished difference Result 130837 states and 160387 transitions. [2022-01-10 20:01:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:01:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2022-01-10 20:01:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:01:16,370 INFO L225 Difference]: With dead ends: 130837 [2022-01-10 20:01:16,370 INFO L226 Difference]: Without dead ends: 56617 [2022-01-10 20:01:16,421 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 20:01:16,421 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 685 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 694 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 20:01:16,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 694 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:01:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56617 states. [2022-01-10 20:01:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56617 to 56617. [2022-01-10 20:01:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56617 states, 56615 states have (on average 1.2267950189879007) internal successors, (69455), 56616 states have internal predecessors, (69455), 0 states have call successors, (0), 0 states 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 20:01:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56617 states to 56617 states and 69455 transitions. [2022-01-10 20:01:20,914 INFO L78 Accepts]: Start accepts. Automaton has 56617 states and 69455 transitions. Word has length 145 [2022-01-10 20:01:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:20,914 INFO L470 AbstractCegarLoop]: Abstraction has 56617 states and 69455 transitions. [2022-01-10 20:01:20,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 20:01:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 56617 states and 69455 transitions. [2022-01-10 20:01:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 20:01:20,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:20,926 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] [2022-01-10 20:01:20,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 20:01:20,926 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:01:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1660111838, now seen corresponding path program 1 times [2022-01-10 20:01:20,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:20,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359645797] [2022-01-10 20:01:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:20,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:20,971 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 20:01:20,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:20,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359645797] [2022-01-10 20:01:20,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359645797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:20,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:20,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:01:20,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570217651] [2022-01-10 20:01:20,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:20,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:01:20,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:01:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:20,974 INFO L87 Difference]: Start difference. First operand 56617 states and 69455 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)