/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:21:02,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:21:02,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:21:02,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 01:21:02,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:21:02,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:21:02,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:21:02,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:21:02,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:21:02,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:21:02,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:21:02,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:21:02,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:21:02,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:21:02,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:21:02,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:21:02,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:21:02,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:21:02,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:21:02,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:21:02,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:21:02,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:21:02,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:21:02,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:21:02,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:21:02,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:21:02,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:21:02,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:21:02,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:21:02,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:21:02,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:21:02,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:21:02,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:21:02,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:21:02,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:21:02,743 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:21:02,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:21:02,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:21:02,744 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:21:02,745 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:21:02,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:21:02,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:21:02,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:21:02,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:21:02,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:21:02,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:21:02,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:21:02,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:21:02,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:21:02,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:21:02,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:21:02,747 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:21:02,747 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:21:02,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:21:02,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:21:02,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:21:02,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:21:02,966 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:21:02,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c [2022-01-11 01:21:03,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcff8bdd1/70fb899e1e674309952e5b385fac4211/FLAG734ef42a8 [2022-01-11 01:21:03,817 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:21:03,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c [2022-01-11 01:21:03,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcff8bdd1/70fb899e1e674309952e5b385fac4211/FLAG734ef42a8 [2022-01-11 01:21:04,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcff8bdd1/70fb899e1e674309952e5b385fac4211 [2022-01-11 01:21:04,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:21:04,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:21:04,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:21:04,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:21:04,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:21:04,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:21:04" (1/1) ... [2022-01-11 01:21:04,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c95487e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:04, skipping insertion in model container [2022-01-11 01:21:04,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:21:04" (1/1) ... [2022-01-11 01:21:04,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:21:04,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:21:05,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2022-01-11 01:21:05,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2022-01-11 01:21:05,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:21:05,825 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:21:06,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2022-01-11 01:21:06,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2022-01-11 01:21:06,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:21:06,509 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:21:06,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06 WrapperNode [2022-01-11 01:21:06,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:21:06,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:21:06,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:21:06,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:21:06,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:06,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:06,925 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 45, calls inlined = 72, statements flattened = 13148 [2022-01-11 01:21:06,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:21:06,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:21:06,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:21:06,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:21:06,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:06,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:06,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:06,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:07,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:07,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:07,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:07,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:21:07,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:21:07,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:21:07,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:21:07,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (1/1) ... [2022-01-11 01:21:07,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:21:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:21:07,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:21:07,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:21:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:21:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:21:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:21:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:21:07,504 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:21:07,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:21:14,024 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:21:14,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:21:14,065 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-11 01:21:14,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:14 BoogieIcfgContainer [2022-01-11 01:21:14,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:21:14,080 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:21:14,080 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:21:14,080 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:21:14,082 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:14" (1/1) ... [2022-01-11 01:21:15,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:21:15 BasicIcfg [2022-01-11 01:21:15,292 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:21:15,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:21:15,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:21:15,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:21:15,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:21:04" (1/4) ... [2022-01-11 01:21:15,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54865640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:21:15, skipping insertion in model container [2022-01-11 01:21:15,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:21:06" (2/4) ... [2022-01-11 01:21:15,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54865640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:21:15, skipping insertion in model container [2022-01-11 01:21:15,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:14" (3/4) ... [2022-01-11 01:21:15,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54865640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:21:15, skipping insertion in model container [2022-01-11 01:21:15,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:21:15" (4/4) ... [2022-01-11 01:21:15,298 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.cTransformedIcfg [2022-01-11 01:21:15,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:21:15,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:21:15,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:21:15,534 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:21:15,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:21:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:15,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:15,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:15,595 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -192499067, now seen corresponding path program 1 times [2022-01-11 01:21:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163801100] [2022-01-11 01:21:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:15,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:15,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:15,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163801100] [2022-01-11 01:21:15,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163801100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:15,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:15,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:15,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496899745] [2022-01-11 01:21:15,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:15,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:15,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,890 INFO L87 Difference]: Start difference. First operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,120 INFO L93 Difference]: Finished difference Result 5244 states and 9511 transitions. [2022-01-11 01:21:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,145 INFO L225 Difference]: With dead ends: 5244 [2022-01-11 01:21:16,145 INFO L226 Difference]: Without dead ends: 2676 [2022-01-11 01:21:16,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,158 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 4446 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 4888 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-01-11 01:21:16,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2674. [2022-01-11 01:21:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7892964071856288) internal successors, (4781), 2673 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4781 transitions. [2022-01-11 01:21:16,269 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4781 transitions. Word has length 66 [2022-01-11 01:21:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,269 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4781 transitions. [2022-01-11 01:21:16,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4781 transitions. [2022-01-11 01:21:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:16,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:21:16,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1072602789, now seen corresponding path program 1 times [2022-01-11 01:21:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578645962] [2022-01-11 01:21:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578645962] [2022-01-11 01:21:16,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578645962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407782528] [2022-01-11 01:21:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,367 INFO L87 Difference]: Start difference. First operand 2674 states and 4781 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,428 INFO L93 Difference]: Finished difference Result 3215 states and 5586 transitions. [2022-01-11 01:21:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,437 INFO L225 Difference]: With dead ends: 3215 [2022-01-11 01:21:16,437 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:16,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,439 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4425 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4425 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.786302395209581) internal successors, (4773), 2673 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4773 transitions. [2022-01-11 01:21:16,483 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4773 transitions. Word has length 66 [2022-01-11 01:21:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,483 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4773 transitions. [2022-01-11 01:21:16,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4773 transitions. [2022-01-11 01:21:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:16,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:21:16,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1721963205, now seen corresponding path program 1 times [2022-01-11 01:21:16,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754264248] [2022-01-11 01:21:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754264248] [2022-01-11 01:21:16,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754264248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339628211] [2022-01-11 01:21:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,560 INFO L87 Difference]: Start difference. First operand 2674 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,615 INFO L93 Difference]: Finished difference Result 3214 states and 5569 transitions. [2022-01-11 01:21:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,624 INFO L225 Difference]: With dead ends: 3214 [2022-01-11 01:21:16,624 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:16,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,632 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4412 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 4420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.783308383233533) internal successors, (4765), 2673 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4765 transitions. [2022-01-11 01:21:16,680 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4765 transitions. Word has length 66 [2022-01-11 01:21:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,680 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4765 transitions. [2022-01-11 01:21:16,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4765 transitions. [2022-01-11 01:21:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:16,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:21:16,683 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash -612394331, now seen corresponding path program 1 times [2022-01-11 01:21:16,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329075919] [2022-01-11 01:21:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329075919] [2022-01-11 01:21:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329075919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510400100] [2022-01-11 01:21:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,757 INFO L87 Difference]: Start difference. First operand 2674 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,836 INFO L93 Difference]: Finished difference Result 3213 states and 5552 transitions. [2022-01-11 01:21:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:16,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,844 INFO L225 Difference]: With dead ends: 3213 [2022-01-11 01:21:16,844 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:16,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,846 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4358 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4358 Valid, 4441 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.776571856287425) internal successors, (4747), 2673 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4747 transitions. [2022-01-11 01:21:16,914 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4747 transitions. Word has length 66 [2022-01-11 01:21:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,915 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4747 transitions. [2022-01-11 01:21:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4747 transitions. [2022-01-11 01:21:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:16,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:21:16,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1083451324, now seen corresponding path program 1 times [2022-01-11 01:21:16,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985885958] [2022-01-11 01:21:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985885958] [2022-01-11 01:21:16,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985885958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872959757] [2022-01-11 01:21:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,970 INFO L87 Difference]: Start difference. First operand 2674 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,039 INFO L93 Difference]: Finished difference Result 3212 states and 5515 transitions. [2022-01-11 01:21:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,047 INFO L225 Difference]: With dead ends: 3212 [2022-01-11 01:21:17,047 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:17,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,049 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4347 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 4429 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7698353293413174) internal successors, (4729), 2673 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4729 transitions. [2022-01-11 01:21:17,106 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4729 transitions. Word has length 66 [2022-01-11 01:21:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,108 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4729 transitions. [2022-01-11 01:21:17,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4729 transitions. [2022-01-11 01:21:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:17,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:21:17,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash 40166627, now seen corresponding path program 1 times [2022-01-11 01:21:17,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101826006] [2022-01-11 01:21:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101826006] [2022-01-11 01:21:17,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101826006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:17,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634977891] [2022-01-11 01:21:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:17,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,180 INFO L87 Difference]: Start difference. First operand 2674 states and 4729 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,360 INFO L93 Difference]: Finished difference Result 3211 states and 5478 transitions. [2022-01-11 01:21:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,369 INFO L225 Difference]: With dead ends: 3211 [2022-01-11 01:21:17,369 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:17,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,372 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4336 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4336 Valid, 4417 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7630988023952097) internal successors, (4711), 2673 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4711 transitions. [2022-01-11 01:21:17,422 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4711 transitions. Word has length 66 [2022-01-11 01:21:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,422 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4711 transitions. [2022-01-11 01:21:17,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4711 transitions. [2022-01-11 01:21:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:17,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:21:17,423 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 634433794, now seen corresponding path program 1 times [2022-01-11 01:21:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59435585] [2022-01-11 01:21:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59435585] [2022-01-11 01:21:17,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59435585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313051609] [2022-01-11 01:21:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:17,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,458 INFO L87 Difference]: Start difference. First operand 2674 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,517 INFO L93 Difference]: Finished difference Result 3210 states and 5441 transitions. [2022-01-11 01:21:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,525 INFO L225 Difference]: With dead ends: 3210 [2022-01-11 01:21:17,525 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 01:21:17,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,528 INFO L933 BasicCegarLoop]: 4370 mSDtfsCounter, 4325 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4325 Valid, 4405 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 01:21:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 01:21:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7563622754491017) internal successors, (4693), 2673 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4693 transitions. [2022-01-11 01:21:17,590 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4693 transitions. Word has length 66 [2022-01-11 01:21:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,590 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4693 transitions. [2022-01-11 01:21:17,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4693 transitions. [2022-01-11 01:21:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:17,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:21:17,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 299768865, now seen corresponding path program 1 times [2022-01-11 01:21:17,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913485697] [2022-01-11 01:21:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913485697] [2022-01-11 01:21:17,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913485697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:17,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335731996] [2022-01-11 01:21:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:17,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:17,652 INFO L87 Difference]: Start difference. First operand 2674 states and 4693 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,805 INFO L93 Difference]: Finished difference Result 3548 states and 5872 transitions. [2022-01-11 01:21:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,815 INFO L225 Difference]: With dead ends: 3548 [2022-01-11 01:21:17,816 INFO L226 Difference]: Without dead ends: 3026 [2022-01-11 01:21:17,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:17,818 INFO L933 BasicCegarLoop]: 4399 mSDtfsCounter, 1041 mSDsluCounter, 12669 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 17068 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 17068 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-11 01:21:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2680. [2022-01-11 01:21:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7509335324869306) internal successors, (4689), 2679 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4689 transitions. [2022-01-11 01:21:17,868 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4689 transitions. Word has length 66 [2022-01-11 01:21:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,869 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4689 transitions. [2022-01-11 01:21:17,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4689 transitions. [2022-01-11 01:21:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:17,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:21:17,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash 629534626, now seen corresponding path program 1 times [2022-01-11 01:21:17,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386327338] [2022-01-11 01:21:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386327338] [2022-01-11 01:21:17,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386327338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:17,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181048854] [2022-01-11 01:21:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:17,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,909 INFO L87 Difference]: Start difference. First operand 2680 states and 4689 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,958 INFO L93 Difference]: Finished difference Result 3228 states and 5404 transitions. [2022-01-11 01:21:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,977 INFO L225 Difference]: With dead ends: 3228 [2022-01-11 01:21:17,977 INFO L226 Difference]: Without dead ends: 2680 [2022-01-11 01:21:17,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,980 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4365 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-11 01:21:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2022-01-11 01:21:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7479462285287528) internal successors, (4681), 2679 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4681 transitions. [2022-01-11 01:21:18,032 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4681 transitions. Word has length 66 [2022-01-11 01:21:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,032 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4681 transitions. [2022-01-11 01:21:18,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4681 transitions. [2022-01-11 01:21:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:21:18,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:21:18,033 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1408521663, now seen corresponding path program 1 times [2022-01-11 01:21:18,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695489883] [2022-01-11 01:21:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:18,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695489883] [2022-01-11 01:21:18,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695489883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:18,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:18,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:18,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202548526] [2022-01-11 01:21:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:18,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:18,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,073 INFO L87 Difference]: Start difference. First operand 2680 states and 4681 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:18,158 INFO L93 Difference]: Finished difference Result 3704 states and 6012 transitions. [2022-01-11 01:21:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 01:21:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:18,164 INFO L225 Difference]: With dead ends: 3704 [2022-01-11 01:21:18,164 INFO L226 Difference]: Without dead ends: 3164 [2022-01-11 01:21:18,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,166 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4285 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:18,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4285 Valid, 4689 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-11 01:21:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3104. [2022-01-11 01:21:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3102 states have (on average 1.683752417794971) internal successors, (5223), 3103 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5223 transitions. [2022-01-11 01:21:18,247 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5223 transitions. Word has length 66 [2022-01-11 01:21:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5223 transitions. [2022-01-11 01:21:18,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5223 transitions. [2022-01-11 01:21:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:21:18,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:21:18,249 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1749508058, now seen corresponding path program 1 times [2022-01-11 01:21:18,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491203066] [2022-01-11 01:21:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:18,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491203066] [2022-01-11 01:21:18,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491203066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:18,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:18,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:18,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302750720] [2022-01-11 01:21:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:18,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:18,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:18,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:18,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,285 INFO L87 Difference]: Start difference. First operand 3104 states and 5223 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:18,468 INFO L93 Difference]: Finished difference Result 4926 states and 7579 transitions. [2022-01-11 01:21:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-11 01:21:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:18,475 INFO L225 Difference]: With dead ends: 4926 [2022-01-11 01:21:18,475 INFO L226 Difference]: Without dead ends: 3968 [2022-01-11 01:21:18,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,477 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:18,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4686 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-01-11 01:21:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3878. [2022-01-11 01:21:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3876 states have (on average 1.6034571723426212) internal successors, (6215), 3877 states have internal predecessors, (6215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6215 transitions. [2022-01-11 01:21:18,583 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6215 transitions. Word has length 106 [2022-01-11 01:21:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,583 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 6215 transitions. [2022-01-11 01:21:18,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6215 transitions. [2022-01-11 01:21:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:21:18,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:21:18,585 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1917210522, now seen corresponding path program 1 times [2022-01-11 01:21:18,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393849256] [2022-01-11 01:21:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:18,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:18,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393849256] [2022-01-11 01:21:18,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393849256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:18,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:18,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:18,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940949596] [2022-01-11 01:21:18,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:18,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:18,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:18,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:18,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,624 INFO L87 Difference]: Start difference. First operand 3878 states and 6215 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:18,788 INFO L93 Difference]: Finished difference Result 7131 states and 10359 transitions. [2022-01-11 01:21:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-11 01:21:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:18,798 INFO L225 Difference]: With dead ends: 7131 [2022-01-11 01:21:18,798 INFO L226 Difference]: Without dead ends: 5427 [2022-01-11 01:21:18,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,803 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4216 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 4868 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 [2022-01-11 01:21:18,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 4868 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2022-01-11 01:21:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5425. [2022-01-11 01:21:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5423 states have (on average 1.4993546007744791) internal successors, (8131), 5424 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 8131 transitions. [2022-01-11 01:21:18,995 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 8131 transitions. Word has length 106 [2022-01-11 01:21:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,995 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 8131 transitions. [2022-01-11 01:21:18,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 8131 transitions. [2022-01-11 01:21:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 01:21:18,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:21:18,997 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1179021509, now seen corresponding path program 1 times [2022-01-11 01:21:18,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056494333] [2022-01-11 01:21:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:21:19,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:19,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056494333] [2022-01-11 01:21:19,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056494333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:19,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:19,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:19,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209426986] [2022-01-11 01:21:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:19,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,019 INFO L87 Difference]: Start difference. First operand 5425 states and 8131 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:19,175 INFO L93 Difference]: Finished difference Result 8629 states and 12188 transitions. [2022-01-11 01:21:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-11 01:21:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:19,183 INFO L225 Difference]: With dead ends: 8629 [2022-01-11 01:21:19,183 INFO L226 Difference]: Without dead ends: 5378 [2022-01-11 01:21:19,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,188 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 402 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:19,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 8322 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-01-11 01:21:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2022-01-11 01:21:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5376 states have (on average 1.5022321428571428) internal successors, (8076), 5377 states have internal predecessors, (8076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8076 transitions. [2022-01-11 01:21:19,323 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8076 transitions. Word has length 106 [2022-01-11 01:21:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:19,323 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8076 transitions. [2022-01-11 01:21:19,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8076 transitions. [2022-01-11 01:21:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:21:19,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:19,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:19,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:21:19,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1232421230, now seen corresponding path program 1 times [2022-01-11 01:21:19,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:19,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588276416] [2022-01-11 01:21:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:19,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:19,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588276416] [2022-01-11 01:21:19,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588276416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:19,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:19,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:19,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247898485] [2022-01-11 01:21:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:19,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:19,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,356 INFO L87 Difference]: Start difference. First operand 5378 states and 8076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:19,585 INFO L93 Difference]: Finished difference Result 11424 states and 15698 transitions. [2022-01-11 01:21:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-11 01:21:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:19,598 INFO L225 Difference]: With dead ends: 11424 [2022-01-11 01:21:19,598 INFO L226 Difference]: Without dead ends: 8220 [2022-01-11 01:21:19,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,603 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4301 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:19,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4839 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-01-11 01:21:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 8042. [2022-01-11 01:21:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8040 states have (on average 1.4149253731343283) internal successors, (11376), 8041 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 11376 transitions. [2022-01-11 01:21:19,881 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 11376 transitions. Word has length 107 [2022-01-11 01:21:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:19,881 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 11376 transitions. [2022-01-11 01:21:19,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 11376 transitions. [2022-01-11 01:21:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 01:21:19,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:19,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:19,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:21:19,884 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash -214202641, now seen corresponding path program 1 times [2022-01-11 01:21:19,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:19,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148641121] [2022-01-11 01:21:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:19,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:21:19,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:19,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148641121] [2022-01-11 01:21:19,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148641121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:19,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:19,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:19,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426851449] [2022-01-11 01:21:19,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:19,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:19,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:19,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,906 INFO L87 Difference]: Start difference. First operand 8042 states and 11376 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:20,136 INFO L93 Difference]: Finished difference Result 13881 states and 18700 transitions. [2022-01-11 01:21:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-11 01:21:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:20,150 INFO L225 Difference]: With dead ends: 13881 [2022-01-11 01:21:20,150 INFO L226 Difference]: Without dead ends: 7996 [2022-01-11 01:21:20,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:20,158 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 400 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:20,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 8321 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-01-11 01:21:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-01-11 01:21:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 7994 states have (on average 1.416437327995997) internal successors, (11323), 7995 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11323 transitions. [2022-01-11 01:21:20,400 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11323 transitions. Word has length 107 [2022-01-11 01:21:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:20,401 INFO L470 AbstractCegarLoop]: Abstraction has 7996 states and 11323 transitions. [2022-01-11 01:21:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11323 transitions. [2022-01-11 01:21:20,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:21:20,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:20,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:20,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:21:20,404 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1030341816, now seen corresponding path program 1 times [2022-01-11 01:21:20,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:20,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174663827] [2022-01-11 01:21:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:20,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:20,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:20,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174663827] [2022-01-11 01:21:20,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174663827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:20,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:20,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:20,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338576056] [2022-01-11 01:21:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:20,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:20,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:20,436 INFO L87 Difference]: Start difference. First operand 7996 states and 11323 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:20,904 INFO L93 Difference]: Finished difference Result 18693 states and 24687 transitions. [2022-01-11 01:21:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-11 01:21:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:20,929 INFO L225 Difference]: With dead ends: 18693 [2022-01-11 01:21:20,929 INFO L226 Difference]: Without dead ends: 12871 [2022-01-11 01:21:20,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:20,941 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4300 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:20,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 4801 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2022-01-11 01:21:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12741. [2022-01-11 01:21:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 12739 states have (on average 1.3499489755867808) internal successors, (17197), 12740 states have internal predecessors, (17197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 17197 transitions. [2022-01-11 01:21:21,401 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 17197 transitions. Word has length 108 [2022-01-11 01:21:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:21,401 INFO L470 AbstractCegarLoop]: Abstraction has 12741 states and 17197 transitions. [2022-01-11 01:21:21,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 17197 transitions. [2022-01-11 01:21:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 01:21:21,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:21,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:21,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:21:21,405 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash -565119399, now seen corresponding path program 1 times [2022-01-11 01:21:21,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:21,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219027233] [2022-01-11 01:21:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:21,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:21:21,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219027233] [2022-01-11 01:21:21,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219027233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:21,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:21,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:21,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838946200] [2022-01-11 01:21:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:21,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:21,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:21,431 INFO L87 Difference]: Start difference. First operand 12741 states and 17197 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:21,938 INFO L93 Difference]: Finished difference Result 23273 states and 30336 transitions. [2022-01-11 01:21:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-11 01:21:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:21,960 INFO L225 Difference]: With dead ends: 23273 [2022-01-11 01:21:21,960 INFO L226 Difference]: Without dead ends: 12696 [2022-01-11 01:21:21,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:21,972 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 398 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 8320 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:21,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 8320 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-01-11 01:21:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12696. [2022-01-11 01:21:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12694 states have (on average 1.3507168741137545) internal successors, (17146), 12695 states have internal predecessors, (17146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 17146 transitions. [2022-01-11 01:21:22,550 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 17146 transitions. Word has length 108 [2022-01-11 01:21:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:22,550 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 17146 transitions. [2022-01-11 01:21:22,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 17146 transitions. [2022-01-11 01:21:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 01:21:22,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:22,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:22,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:21:22,571 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:22,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1529338429, now seen corresponding path program 1 times [2022-01-11 01:21:22,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:22,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641309504] [2022-01-11 01:21:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:22,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:22,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:22,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641309504] [2022-01-11 01:21:22,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641309504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:22,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:22,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:22,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288686558] [2022-01-11 01:21:22,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:22,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:22,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:22,605 INFO L87 Difference]: Start difference. First operand 12696 states and 17146 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:23,446 INFO L93 Difference]: Finished difference Result 32442 states and 41712 transitions. [2022-01-11 01:21:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-11 01:21:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:23,476 INFO L225 Difference]: With dead ends: 32442 [2022-01-11 01:21:23,476 INFO L226 Difference]: Without dead ends: 21920 [2022-01-11 01:21:23,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:23,488 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 331 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:23,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 9037 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21920 states. [2022-01-11 01:21:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21920 to 21920. [2022-01-11 01:21:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21920 states, 21918 states have (on average 1.2924080664294186) internal successors, (28327), 21919 states have internal predecessors, (28327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21920 states to 21920 states and 28327 transitions. [2022-01-11 01:21:24,216 INFO L78 Accepts]: Start accepts. Automaton has 21920 states and 28327 transitions. Word has length 109 [2022-01-11 01:21:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:24,217 INFO L470 AbstractCegarLoop]: Abstraction has 21920 states and 28327 transitions. [2022-01-11 01:21:24,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 21920 states and 28327 transitions. [2022-01-11 01:21:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:21:24,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:24,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:24,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:21:24,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2145762161, now seen corresponding path program 1 times [2022-01-11 01:21:24,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:24,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865122365] [2022-01-11 01:21:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:24,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:24,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865122365] [2022-01-11 01:21:24,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865122365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:24,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:24,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:24,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492848963] [2022-01-11 01:21:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:24,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:24,267 INFO L87 Difference]: Start difference. First operand 21920 states and 28327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:25,366 INFO L93 Difference]: Finished difference Result 50438 states and 63377 transitions. [2022-01-11 01:21:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-01-11 01:21:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:25,426 INFO L225 Difference]: With dead ends: 50438 [2022-01-11 01:21:25,426 INFO L226 Difference]: Without dead ends: 30696 [2022-01-11 01:21:25,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:25,460 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4202 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:25,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4683 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2022-01-11 01:21:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 30566. [2022-01-11 01:21:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30566 states, 30564 states have (on average 1.2666862976050255) internal successors, (38715), 30565 states have internal predecessors, (38715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 38715 transitions. [2022-01-11 01:21:26,774 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 38715 transitions. Word has length 140 [2022-01-11 01:21:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:26,775 INFO L470 AbstractCegarLoop]: Abstraction has 30566 states and 38715 transitions. [2022-01-11 01:21:26,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 38715 transitions. [2022-01-11 01:21:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 01:21:26,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:26,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:21:26,807 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:26,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1849332874, now seen corresponding path program 1 times [2022-01-11 01:21:26,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:26,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954252318] [2022-01-11 01:21:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:26,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:26,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:26,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954252318] [2022-01-11 01:21:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954252318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:26,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:26,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535386878] [2022-01-11 01:21:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:26,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:26,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:26,839 INFO L87 Difference]: Start difference. First operand 30566 states and 38715 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:28,547 INFO L93 Difference]: Finished difference Result 71610 states and 88863 transitions. [2022-01-11 01:21:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-01-11 01:21:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:28,607 INFO L225 Difference]: With dead ends: 71610 [2022-01-11 01:21:28,607 INFO L226 Difference]: Without dead ends: 43234 [2022-01-11 01:21:28,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:28,630 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4204 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 4681 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43234 states. [2022-01-11 01:21:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43234 to 43040. [2022-01-11 01:21:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43040 states, 43038 states have (on average 1.2469677959012966) internal successors, (53667), 43039 states have internal predecessors, (53667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43040 states to 43040 states and 53667 transitions. [2022-01-11 01:21:30,293 INFO L78 Accepts]: Start accepts. Automaton has 43040 states and 53667 transitions. Word has length 140 [2022-01-11 01:21:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:30,293 INFO L470 AbstractCegarLoop]: Abstraction has 43040 states and 53667 transitions. [2022-01-11 01:21:30,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 43040 states and 53667 transitions. [2022-01-11 01:21:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 01:21:30,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:30,318 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:30,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:21:30,319 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 292694916, now seen corresponding path program 1 times [2022-01-11 01:21:30,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:30,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162114499] [2022-01-11 01:21:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:30,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 01:21:30,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:30,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162114499] [2022-01-11 01:21:30,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162114499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:30,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:30,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:30,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558172348] [2022-01-11 01:21:30,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:30,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:30,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:30,373 INFO L87 Difference]: Start difference. First operand 43040 states and 53667 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:32,311 INFO L93 Difference]: Finished difference Result 75448 states and 93154 transitions. [2022-01-11 01:21:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:32,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-01-11 01:21:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:32,376 INFO L225 Difference]: With dead ends: 75448 [2022-01-11 01:21:32,376 INFO L226 Difference]: Without dead ends: 44000 [2022-01-11 01:21:32,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:32,404 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 4272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:32,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4272 Valid, 4741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44000 states. [2022-01-11 01:21:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44000 to 42320. [2022-01-11 01:21:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42320 states, 42318 states have (on average 1.2301857365660003) internal successors, (52059), 42319 states have internal predecessors, (52059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42320 states to 42320 states and 52059 transitions. [2022-01-11 01:21:34,107 INFO L78 Accepts]: Start accepts. Automaton has 42320 states and 52059 transitions. Word has length 157 [2022-01-11 01:21:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:34,107 INFO L470 AbstractCegarLoop]: Abstraction has 42320 states and 52059 transitions. [2022-01-11 01:21:34,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 42320 states and 52059 transitions. [2022-01-11 01:21:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:21:34,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:34,138 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:34,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:21:34,138 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 436238372, now seen corresponding path program 1 times [2022-01-11 01:21:34,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:34,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289755554] [2022-01-11 01:21:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:34,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 01:21:34,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:34,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289755554] [2022-01-11 01:21:34,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289755554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:34,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:34,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:34,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496401170] [2022-01-11 01:21:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:34,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:34,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:34,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:34,170 INFO L87 Difference]: Start difference. First operand 42320 states and 52059 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:35,585 INFO L93 Difference]: Finished difference Result 76996 states and 93573 transitions. [2022-01-11 01:21:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 01:21:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:35,636 INFO L225 Difference]: With dead ends: 76996 [2022-01-11 01:21:35,636 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:21:35,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:35,661 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 287 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 8955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:35,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 8955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:21:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:21:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.225670913526701) internal successors, (45215), 36891 states have internal predecessors, (45215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45215 transitions. [2022-01-11 01:21:37,466 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45215 transitions. Word has length 158 [2022-01-11 01:21:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:37,466 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45215 transitions. [2022-01-11 01:21:37,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45215 transitions. [2022-01-11 01:21:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:21:37,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:37,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:37,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:21:37,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1433459742, now seen corresponding path program 1 times [2022-01-11 01:21:37,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:37,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586487856] [2022-01-11 01:21:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:37,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:37,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:37,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586487856] [2022-01-11 01:21:37,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586487856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:37,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:37,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:37,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261112806] [2022-01-11 01:21:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:37,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:37,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:37,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:37,522 INFO L87 Difference]: Start difference. First operand 36892 states and 45215 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:38,892 INFO L93 Difference]: Finished difference Result 61020 states and 74061 transitions. [2022-01-11 01:21:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 01:21:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:38,937 INFO L225 Difference]: With dead ends: 61020 [2022-01-11 01:21:38,937 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:21:38,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:38,953 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 278 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:38,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8967 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:21:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:21:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2214421252371916) internal successors, (45059), 36891 states have internal predecessors, (45059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45059 transitions. [2022-01-11 01:21:40,534 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45059 transitions. Word has length 158 [2022-01-11 01:21:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:40,534 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45059 transitions. [2022-01-11 01:21:40,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45059 transitions. [2022-01-11 01:21:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:21:40,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:40,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:40,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:21:40,551 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:40,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash -525025355, now seen corresponding path program 1 times [2022-01-11 01:21:40,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339027732] [2022-01-11 01:21:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:40,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:40,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:40,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339027732] [2022-01-11 01:21:40,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339027732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:40,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:40,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:40,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6318475] [2022-01-11 01:21:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:40,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:40,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:40,591 INFO L87 Difference]: Start difference. First operand 36892 states and 45059 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:41,926 INFO L93 Difference]: Finished difference Result 60996 states and 73761 transitions. [2022-01-11 01:21:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:41,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 01:21:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:41,973 INFO L225 Difference]: With dead ends: 60996 [2022-01-11 01:21:41,973 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 01:21:41,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:41,996 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 278 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8981 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:41,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8981 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 01:21:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 01:21:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2185145025752235) internal successors, (44951), 36891 states have internal predecessors, (44951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 44951 transitions. [2022-01-11 01:21:43,665 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 44951 transitions. Word has length 158 [2022-01-11 01:21:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:43,665 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 44951 transitions. [2022-01-11 01:21:43,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 44951 transitions. [2022-01-11 01:21:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:21:43,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:43,678 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:21:43,678 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:43,678 INFO L85 PathProgramCache]: Analyzing trace with hash 879108042, now seen corresponding path program 1 times [2022-01-11 01:21:43,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:43,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472445560] [2022-01-11 01:21:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:43,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:21:43,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472445560] [2022-01-11 01:21:43,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472445560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:43,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:43,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:43,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391365477] [2022-01-11 01:21:43,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:43,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:43,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:43,710 INFO L87 Difference]: Start difference. First operand 36892 states and 44951 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:45,269 INFO L93 Difference]: Finished difference Result 60124 states and 72706 transitions. [2022-01-11 01:21:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 01:21:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:45,320 INFO L225 Difference]: With dead ends: 60124 [2022-01-11 01:21:45,320 INFO L226 Difference]: Without dead ends: 38554 [2022-01-11 01:21:45,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:45,345 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 331 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:45,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 8850 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38554 states. [2022-01-11 01:21:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38554 to 36838. [2022-01-11 01:21:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.2035237267890107) internal successors, (44333), 36837 states have internal predecessors, (44333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 44333 transitions. [2022-01-11 01:21:47,023 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 44333 transitions. Word has length 158 [2022-01-11 01:21:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 44333 transitions. [2022-01-11 01:21:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 44333 transitions. [2022-01-11 01:21:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 01:21:47,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:47,050 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:47,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:21:47,051 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1949605532, now seen corresponding path program 1 times [2022-01-11 01:21:47,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:47,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639383908] [2022-01-11 01:21:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:47,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:47,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:47,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639383908] [2022-01-11 01:21:47,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639383908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:47,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:47,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:47,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525698183] [2022-01-11 01:21:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:47,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:47,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:47,081 INFO L87 Difference]: Start difference. First operand 36838 states and 44333 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:48,551 INFO L93 Difference]: Finished difference Result 61074 states and 72667 transitions. [2022-01-11 01:21:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 01:21:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:48,606 INFO L225 Difference]: With dead ends: 61074 [2022-01-11 01:21:48,606 INFO L226 Difference]: Without dead ends: 37008 [2022-01-11 01:21:48,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:48,629 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 305 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:48,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 8919 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37008 states. [2022-01-11 01:21:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37008 to 36838. [2022-01-11 01:21:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.1863665978933653) internal successors, (43701), 36837 states have internal predecessors, (43701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 43701 transitions. [2022-01-11 01:21:50,290 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 43701 transitions. Word has length 158 [2022-01-11 01:21:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:50,290 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 43701 transitions. [2022-01-11 01:21:50,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 43701 transitions. [2022-01-11 01:21:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:21:50,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:50,302 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:50,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:21:50,302 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:50,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1055862078, now seen corresponding path program 1 times [2022-01-11 01:21:50,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984099793] [2022-01-11 01:21:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:50,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:50,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984099793] [2022-01-11 01:21:50,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984099793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:50,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:50,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:50,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513163813] [2022-01-11 01:21:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:50,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:50,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:50,336 INFO L87 Difference]: Start difference. First operand 36838 states and 43701 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:51,507 INFO L93 Difference]: Finished difference Result 53312 states and 62747 transitions. [2022-01-11 01:21:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 01:21:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:51,545 INFO L225 Difference]: With dead ends: 53312 [2022-01-11 01:21:51,545 INFO L226 Difference]: Without dead ends: 27610 [2022-01-11 01:21:51,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:51,568 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 279 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8891 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:51,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 8891 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-01-11 01:21:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 27536. [2022-01-11 01:21:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.192162417374882) internal successors, (32825), 27535 states have internal predecessors, (32825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32825 transitions. [2022-01-11 01:21:52,919 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32825 transitions. Word has length 159 [2022-01-11 01:21:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:52,919 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32825 transitions. [2022-01-11 01:21:52,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32825 transitions. [2022-01-11 01:21:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 01:21:52,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:52,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:52,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:21:52,930 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash 755364622, now seen corresponding path program 1 times [2022-01-11 01:21:52,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:52,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870454434] [2022-01-11 01:21:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:52,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:52,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870454434] [2022-01-11 01:21:52,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870454434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:52,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:52,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:52,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760456378] [2022-01-11 01:21:52,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:52,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:52,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:52,960 INFO L87 Difference]: Start difference. First operand 27536 states and 32825 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:54,006 INFO L93 Difference]: Finished difference Result 45260 states and 53059 transitions. [2022-01-11 01:21:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:54,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 01:21:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:54,046 INFO L225 Difference]: With dead ends: 45260 [2022-01-11 01:21:54,047 INFO L226 Difference]: Without dead ends: 27658 [2022-01-11 01:21:54,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:54,066 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 306 mSDsluCounter, 4282 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 8898 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:54,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 8898 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27658 states. [2022-01-11 01:21:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27658 to 27536. [2022-01-11 01:21:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.1754558001016924) internal successors, (32365), 27535 states have internal predecessors, (32365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32365 transitions. [2022-01-11 01:21:55,234 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32365 transitions. Word has length 159 [2022-01-11 01:21:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:55,234 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32365 transitions. [2022-01-11 01:21:55,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32365 transitions. [2022-01-11 01:21:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:21:55,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:55,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:55,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:21:55,245 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1302776373, now seen corresponding path program 1 times [2022-01-11 01:21:55,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:55,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363017817] [2022-01-11 01:21:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:55,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:21:55,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363017817] [2022-01-11 01:21:55,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363017817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:55,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:55,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:55,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625789324] [2022-01-11 01:21:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:55,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:55,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:55,397 INFO L87 Difference]: Start difference. First operand 27536 states and 32365 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:56,758 INFO L93 Difference]: Finished difference Result 49246 states and 56655 transitions. [2022-01-11 01:21:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:21:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:56,780 INFO L225 Difference]: With dead ends: 49246 [2022-01-11 01:21:56,780 INFO L226 Difference]: Without dead ends: 23854 [2022-01-11 01:21:56,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:56,796 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 1045 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:56,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 16800 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2022-01-11 01:21:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 20764. [2022-01-11 01:21:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20764 states, 20762 states have (on average 1.1788363356131395) internal successors, (24475), 20763 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20764 states to 20764 states and 24475 transitions. [2022-01-11 01:21:57,889 INFO L78 Accepts]: Start accepts. Automaton has 20764 states and 24475 transitions. Word has length 160 [2022-01-11 01:21:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:57,890 INFO L470 AbstractCegarLoop]: Abstraction has 20764 states and 24475 transitions. [2022-01-11 01:21:57,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 20764 states and 24475 transitions. [2022-01-11 01:21:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:21:57,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:57,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:57,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:21:57,897 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1124602991, now seen corresponding path program 1 times [2022-01-11 01:21:57,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:57,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981343747] [2022-01-11 01:21:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:57,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:21:57,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:57,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981343747] [2022-01-11 01:21:57,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981343747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:57,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:57,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:57,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360449383] [2022-01-11 01:21:57,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:57,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:57,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:57,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:57,957 INFO L87 Difference]: Start difference. First operand 20764 states and 24475 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:58,997 INFO L93 Difference]: Finished difference Result 37508 states and 42876 transitions. [2022-01-11 01:21:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:21:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:59,024 INFO L225 Difference]: With dead ends: 37508 [2022-01-11 01:21:59,024 INFO L226 Difference]: Without dead ends: 18900 [2022-01-11 01:21:59,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:59,043 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 896 mSDsluCounter, 12471 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 16804 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:59,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 16804 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18900 states. [2022-01-11 01:22:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18900 to 17048. [2022-01-11 01:22:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17048 states, 17046 states have (on average 1.1793382611756424) internal successors, (20103), 17047 states have internal predecessors, (20103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17048 states to 17048 states and 20103 transitions. [2022-01-11 01:22:00,066 INFO L78 Accepts]: Start accepts. Automaton has 17048 states and 20103 transitions. Word has length 160 [2022-01-11 01:22:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:22:00,066 INFO L470 AbstractCegarLoop]: Abstraction has 17048 states and 20103 transitions. [2022-01-11 01:22:00,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 17048 states and 20103 transitions. [2022-01-11 01:22:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:22:00,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:22:00,071 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:22:00,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:22:00,071 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:22:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:22:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -325117326, now seen corresponding path program 1 times [2022-01-11 01:22:00,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:22:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568755841] [2022-01-11 01:22:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:22:00,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:22:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:22:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 01:22:00,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:22:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568755841] [2022-01-11 01:22:00,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568755841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:22:00,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:22:00,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:22:00,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885879823] [2022-01-11 01:22:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:22:00,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:22:00,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:22:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:22:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:22:00,114 INFO L87 Difference]: Start difference. First operand 17048 states and 20103 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:22:00,728 INFO L93 Difference]: Finished difference Result 23497 states and 27035 transitions. [2022-01-11 01:22:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:22:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-01-11 01:22:00,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:22:00,735 INFO L225 Difference]: With dead ends: 23497 [2022-01-11 01:22:00,735 INFO L226 Difference]: Without dead ends: 6077 [2022-01-11 01:22:00,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:22:00,746 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 770 mSDsluCounter, 12423 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 16756 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:22:00,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 16756 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:22:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2022-01-11 01:22:00,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5939. [2022-01-11 01:22:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5937 states have (on average 1.3442816237156814) internal successors, (7981), 5938 states have internal predecessors, (7981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7981 transitions. [2022-01-11 01:22:00,997 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7981 transitions. Word has length 160 [2022-01-11 01:22:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:22:00,997 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7981 transitions. [2022-01-11 01:22:00,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7981 transitions. [2022-01-11 01:22:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 01:22:01,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:22:01,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:22:01,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:22:01,001 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:22:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:22:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 224011255, now seen corresponding path program 1 times [2022-01-11 01:22:01,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:22:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621061683] [2022-01-11 01:22:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:22:01,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:22:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:22:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:22:01,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:22:01,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621061683] [2022-01-11 01:22:01,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621061683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:22:01,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:22:01,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 01:22:01,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480834067] [2022-01-11 01:22:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:22:01,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 01:22:01,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:22:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 01:22:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 01:22:01,205 INFO L87 Difference]: Start difference. First operand 5939 states and 7981 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:22:01,612 INFO L93 Difference]: Finished difference Result 5939 states and 7981 transitions. [2022-01-11 01:22:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:22:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 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 239 [2022-01-11 01:22:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:22:01,615 INFO L225 Difference]: With dead ends: 5939 [2022-01-11 01:22:01,615 INFO L226 Difference]: Without dead ends: 2123 [2022-01-11 01:22:01,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 01:22:01,619 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 4536 mSDsluCounter, 14034 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 18715 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:22:01,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4536 Valid, 18715 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:22:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-11 01:22:01,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-11 01:22:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-11 01:22:01,644 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 239 [2022-01-11 01:22:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:22:01,644 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-11 01:22:01,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:22:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-11 01:22:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2022-01-11 01:22:01,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:22:01,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:22:01,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:22:01,665 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:22:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:22:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1802749452, now seen corresponding path program 1 times [2022-01-11 01:22:01,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:22:01,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100158318] [2022-01-11 01:22:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:22:01,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:22:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat